目录

• Application Development Overview
• Preparations for Development
• Building Your First HarmonyOS Application (ArkTS)
• Application Package Overview
• Application Package Structure
• HAP
• HAR
• HSP
• Application Installation, Uninstall, and Update
• Consistency Verification for Application Installation and Update
• Application Configuration Files
• app.json5 Configuration File
• module.json5 Configuration File
• Creating a Static Shortcut of the Application
• Creating an Application Clone
• Creating an Application Multi-Instance
• Configuring an Application Icon and Label
• Configuring the Context Menu for Applications (PC/2-in-1 Device)
• Converting HAR to HSP
• Converting HSP to HAR
• Converting HAP to HAR
• Integrated HSP
• Integrating bin Files into Application Packages (PC/2-in-1 Device)
• Calling APIs Across HAR/HSP Modules on the Native Side
• Developing and Using App Plugins (PC/2-in-1 Device)
• FAQs About Application Packages
• Application Package Glossary
• Resource Categories and Access
• Getting Started with ArkTS
• Introduction to ArkTS
• ArkTS Coding Style Guide
• ArkTS Migration Background
• TypeScript to ArkTS Cookbook
• Adaptation Cases
• ArkTS Performant Programming Practices
• Migrating from Java to ArkTS
• Migrating from Swift to ArkTS
• HarmonyOS Glossary
• Before You Start
• About This Kit
• Application Model Overview
• Application- or Component-Level Configuration
• UIAbility Overview
• UIAbility Lifecycle
• UIAbility Launch Type
• UIAbility Usage
• Data Synchronization Between UIAbility and UI Page
• Starting UIAbility Within the Same Application
• Cross-Device Migration Through Call Invocation
• UIAbility Backup and Restore
• EmbeddedUIExtensionAbility
• Using AppServiceExtensionAbility for Background Services
• AbilityStage Component Manager
• Context
• Want Overview
• Matching Rules of Explicit Want and Implicit Want
• Using Explicit Want to Start an Application Component
• Common action and entities Values (Not Recommended)
• Component Startup Rules (Stage Model)
• Obtaining/Setting Environment Variables
• Process Model Overview
• ArkTS Child Process Development
• Creating/Terminating Native Child Processes (C/C++)
• Independent Process Development Guide
• Thread Model
• Application Configuration File (Stage Model)
• Application Lifecycle Overview
• Application Startup Process
• App Startup Settings
• AppStartup
• Application Preloading
• Application Quick Start
• App Exit
• Exiting an Application (PC/2-in-1 Device)
• App Restart
• Obtaining the Cause of Abnormal Application Exit
• Overview of Application Redirection
• Overview of Starting a Specified Application
• (Optional) Using canOpenLink to Check Application Accessibility
• Obtaining the URL of the Target Application
• Using Deep Linking for Application Redirection
• Using App Linking for Application Redirection
• Switching from Explicit Want Redirection to Linking Redirection
• Application Link Description
• Overview of Starting an Application of the Specified Type
• Using startAbilityByType to Start a Navigation Application
• Using startAbilityByType to Start an Email Application
• Using mailto to Start an Email Application
• Using startAbilityByType to Start a Financial Application
• Using startAbilityByType to Start a Flight Application
• Using startAbilityByType to Start an Express Delivery Application
• Using startAbilityByType to Start an Image Editing Application
• Using startAbility to Start a File Application
• Starting a System Application
• Overview of Inter-App Redirection
• Redirection for Social Sharing
• Ad Redirection
• Redirection After Special Text Recognition
• Redirection and Launching Between Web Pages and Apps
• Ark Agentic Framework Overview
• InsightIntent Framework Overview
• Intent Development Overview
• Developing Intents Using Configuration Files
• Developing Intents Using Decorators
• Appendix: Standard Intent Access Specifications
• Debugging Intents
• Application Skill Development Guide Based on ArkTS Scripts
• On-Device A2A Framework Overview
• Using the AgentExtensionAbility Component to Implement Agent Services
• AgentExtensionAbility Configuration File
• Modular Object Model Overview (C/C++)
• Using ModularObjectExtensionAbility to Implement Modular Objects (C/C++)
• Implementing IPC Communication for ModularObjectExtensionAbility with Taihe (C/C++)
• Using ModularObjectDispatcher for Dynamic Interface Invocation (C/C++)
• Ability Kit Terminology
• About This Kit
• Button-annotated Scenarios
• Screen Reading Scenarios with Content Specified
• Screen Reading Scenarios of Illustrations/Videos/Animations
• Scenarios Where a New Focus Position Is Set
• Multi-dimensional Nesting Scenarios
• Multi-Component Scenarios
• Multilingual Scenarios
• Scenarios Where the Screen Reading Focus Is Disabled
• Scenarios Involving Component Status Changes
• Scenarios Involving Component Relocation
• Automatic Centering of Cards
• Whole-Component Focus on List Items
• Scenarios Involving Dynamically Changed Content
• Focus Navigation for Pop-Ups
• Operating Error Scenarios
• Customizing the Control Status Announcement
• Customizing Scroll Steps for Accessibility Operations
• Customizing the Focus Navigation Order
• Proactive Page Change Notification
• Testing Screen Reader
• Declaring the Integration with the System-Wide Senior Mode
• Synchronizing the In-App Senior Mode with System Settings
• Obtaining the Senior Mode Status
• About This Kit
• Unified Data Definition Overview
• UTDs (ArkTS)
• UTDs (C/C++)
• Uniform Data Structs (ArkTS)
• Uniform Data Structs (C/C++)
• Content Cards Based on Uniform Data Structs (ArkTS)
• Prebuilt UTDs
• Application Data Persistence Overview
• Persisting User Preferences (ArkTS)
• Persisting User Preferences (C/C++)
• Persisting KV Store Data (ArkTS)
• Persisting RDB Store Data (ArkTS)
• Persisting RDB Store Data (C/C++)
• Persisting Vector Store Data (ArkTS)
• Persisting Vector Store Data (C/C++)
• Overview of Cross-Device Application Data Sync
• Cross-Device Sync of KV Stores (ArkTS)
• Cross-Device Sync of RDB Stores (ArkTS)
• Cross-Device Sync of Distributed Data Objects (ArkTS)
• Overview of Device-Cloud Data Sync for the Same App
• Deploying the Cloud Environment for Device-Cloud Data Sync
• Developing RDB Store for Device-Cloud Data Synchronization (ArkTS)
• Data Reliability and Security Overview
• Database Backup and Restore (ArkTS)
• Database Backup and Restore (C/C++)
• Database Encryption (ArkTS)
• Database Encryption (C/C++)
• Access Control by Device and Data Level (ArkTS)
• Access Control by Device and Data Level (C/C++)
• Using an EL5 Database (ArkTS)
• Overview of Cross-Application Data Sharing
• Sharing Configurations Between Applications (ArkTS)
• Sharing Data via Unified Data Channels (ArkTS)
• Sharing Data via Unified Data Channels (C/C++)
• Application Data Vectorization (ArkTS)
• Preferences Database Debugging Tool Guide
• vector-store Database Debugging Tool Guide
• SQLite Debugging Tool
• ArkData Glossary
• ArkData FAQs
• About This Kit
• Overview of the ArkTS Common Library
• XML Overview
• XML Generation
• XML Parsing
• XML Conversion
• Buffer and FastBuffer
• JSON Extension Library
• Overview of the ArkTS Container Library
• Linear Containers
• Nonlinear Containers
• Basic Library FAQ
• Overview of Concurrency
• Asynchronous Concurrency (Promise and Async/Await)
• Overview of Multithreaded Concurrency
• TaskPool
• TaskPool Usage Guidelines
• Worker
• Comparison Between TaskPool and Worker
• Overview of ArkTS Inter-Thread Communication
• Overview of Inter-Thread Communication Objects
• Regular Object
• Container Object
• ArrayBuffer Object
• SharedArrayBuffer Object
• Transferable Object (NativeBinding Object)
• Overview of Sendable Objects
• Usage Rules and Constraints for Sendable
• Asynchronous Lock
• Asynchronous Waiting
• ASON Parsing and Generation
• Shared Container
• Shared Module
• Freezing Sendable Objects
• Use Scenarios of Sendable
• Using TaskPool for Independent Time-consuming Tasks
• Using TaskPool for Multiple Time-consuming Tasks
• Communication Between the TaskPool Task and Host Thread
• Real-Time Communication Between the Worker Thread and Host Thread
• Synchronous Calls to Host Thread Interfaces from Worker
• High-Performance Communication Between Multi-Level Workers
• Queue-Jumping Message Communication from Worker to Host Thread
• Overview of Multithreaded Development
• Overview of Concurrency in Time-Consuming Tasks
• CPU Intensive Task Development (TaskPool and Worker)
• I/O Intensive Task Development (TaskPool)
• Synchronous Task Development (TaskPool and Worker)
• Overview of Concurrency in Continuous Tasks
• Continuous Task Development (TaskPool)
• Overview of Concurrency in Resident Tasks
• Resident Task Development (Worker)
• Batch Database Operations
• Concurrent Loading of Service Modules
• Global Configuration
• ArkUI Data Updates
• C++ Inter-Thread Data Sharing
• Specifying Task Concurrency with TaskPool
• ArkUI Waterfall Rendering
• Obtaining the Recently Accessed List
• Canceling Tasks in Multithreading with TaskPool
• Multithreaded Operations with Custom Native Transferable Objects
• Multithreaded Operations with Custom Native Sendable Objects
• Persistent Worker Threads Handling Concurrent Tasks via TaskPool
• Sendable Object Refactoring Practice
• Common Concurrency Issues
• ArkTS Cross-Language Interaction
• Overview of ArkTS Runtime
• GC
• Overview of Modular Operation
• Dynamic Import
• Lazy Import
• Dynamically Loading Native Modules in Synchronous Mode
• Statically Loading Native Modules
• Loading Modules Using Node-API
• Side Effects and Optimization of Module Loading
• Modularization Debugging Tools
• Modularization FAQ
• ArkTS Runtime FAQs
• Overview of the ArkTS Compilation Toolchain
• Overview of Ark Bytecode
• Ark Bytecode File Format
• Ark Bytecode Fundamentals
• Naming Conventions for Ark Bytecode Functions
• Customizing Ark Bytecode During Compilation
• Ark Bytecode Generation FAQs
• Disassembler
• Overview of ArkGuard for Source Code Obfuscation
• ArkGuard Principles and Capabilities for Source Code Obfuscation
• ArkGuard Obfuscation Configuration Options
• ArkGuard Obfuscation Keep Options
• Using ArkGuard for Source Code Obfuscation
• ArkGuard Obfuscation Practice Guide
• Package-specific Source Code Obfuscation Recommendations
• Common Issues with ArkGuard in Source Code Obfuscation
• Overview of ArkGuard for Bytecode Obfuscation
• ArkGuard Principles and Capabilities for Bytecode Obfuscation
• Using ArkGuard for Bytecode Obfuscation
• Package-specific Bytecode Obfuscation Recommendations
• Common Issues with ArkGuard in Bytecode Obfuscation
• Configuring arkOptions in build-profile.json5
• ArkTS Terminology
• About This Kit
• UI Development (ArkTS-based Declarative Development Paradigm) Overview
• Basic Syntax Overview
• UI Decorator Overview
• Declarative UI Description
• Creating a Custom Component
• Custom Component Lifecycle
• Lifecycle of a Custom Component (Recommended)
• Custom Component Layout
• Constraints on Access Modifiers of Custom Component Member Variables
• @Reusable Decorator: Reusing V1 Components
• @ReusableV2 Decorator: Reusing V2 Components
• Global Reuse: Centralized Component Recycling and Reuse
• Development Practices of Custom Component Reuse
• Diagnosis and Analysis of Component Reuse Issues
• Freezing a Custom Component (V1)
• Freezing a Custom Component (V2)
• Component Encapsulation
• Component Extension Overview
• @Builder Decorator: Custom Builder Function
• @LocalBuilder Decorator: Maintaining Component Relationships
• @BuilderParam Decorator: Referencing the @Builder Function
• wrapBuilder: Encapsulating Global @Builder
• mutableBuilder: Implementing Dynamic Update of Global @Builder
• @Styles Decorator: Defining Reusable Component Styles
• @Extend Decorator: Defining Extended Component Styles
• stateStyles: Applying Polymorphic Styles
• @AnimatableExtend Decorator: Defining Animatable Properties
• @Require Decorator: Validating Constructor Input Parameters
• State Management Overview
• State Management Principles
• Differences Between State Management V1 and V2 Update Mechanisms
• MVVM (V1)
• MVVM (V2)
• @State Decorator: State Owned by Component
• @Prop Decorator: Implementing One-Way Synchronization from Parent to Child Components
• @Link Decorator: Implementing Two-Way Synchronization Between Parent and Child Components
• @Provide and @Consume Decorators: Two-Way Synchronization with Descendant Components
• @Observed and @ObjectLink Decorators: Observing Property Changes in Nested Class Objects
• @Watch Decorator: Getting Notified of State Variable Changes
• @Track Decorator: Implementing Class Object Property-Level Updates
• Application State Management Overview
• LocalStorage: Storing Page-Level UI State
• AppStorage: Storing Application-wide UI State
• PersistentStorage: Persisting UI State
• Environment: Querying the Device Environment
• @Local Decorator: Representing the Internal State of Components
• @Param Decorator: Inputting External Parameters to Components
• @Once: Implementing Initialization Once
• @Event Decorator: Standardizing Component Output
• @Provider and @Consumer Decorators: Synchronizing Across Component Levels in a Two-Way Manner
• @ObservedV2 and @Trace Decorators: Observing Property Changes in Classes
• @Monitor Decorator: Listening for Value Changes of the State Variables
• @SyncMonitor Decorator: Synchronous Listening for Value Changes of the State Variables
• @Computed Decorator: Declaring Computed Properties
• @Type Decorator: Marking the Types of the Class Property
• AppStorageV2: Storing Application-wide UI State
• PersistenceV2: Persisting UI States
• getTarget API: Obtaining Original Objects
• makeObserved API: Changing Unobservable Data to Observable Data
• canBeObserved API: Determining Whether an Object Can Be Observed
• addMonitor and clearMonitor APIs: Dynamically Adding and Removing Listeners
• applySync/flushUpdates/flushUIUpdates APIs: Synchronous Update
• $$ Syntax: Implementing Two-Way Synchronization for Built-in Components
• !! Syntax: Enabling Two-Way Binding
• V1 to V2 Migration Overview
• Migration for Component State Variables
• Migration for Data Object State Variables
• Migration for In-Application State Variables
• Migration for Component Reuse
• Migration for Repeated Content Rendering
• Migration for Built-in Objects
• Widget State Variable Migration
• Migration for AnimateTo Usage
• Guidelines for Mixed Use of State Management V1 and V2 (Before API Version 19)
• Mixed Use of State Management V1 and V2 (API Version 19 and Later)
• In-Component State Management FAQs
• Data Object State Management FAQs
• In-App State Management and Other FAQs
• Common Methods for Locating the Problem That Component Refresh Is Not Triggered When State Variables Change
• State Management Terms
• Rendering Control Overview
• if/else: Conditional Rendering
• ForEach: Rendering Repeated Content
• LazyForEach: Lazy Data Loading
• Repeat: Reusing Components for Repeated Content Rendering
• ContentSlot: Enabling Hybrid Development
• @Env: Environment Variable
• @CustomEnv: Custom Environment Variable
• Component Navigation and Page Routing Overview
• Navigation Architecture
• Subpage
• Page Routing
• Transition Animation
• Cross-Package Routing
• Split-View Layout
• Page Routing (@ohos.router) (Not Recommended)
• Transition from Router to Navigation
• Layout Overview
• Linear Layout (Row/Column)
• Stack Layout (Stack)
• Flex Layout (Flex)
• Relative Layout (RelativeContainer)
• Responsive Grid Layout (GridRow/GridCol)
• Dynamic Layout (DynamicLayout)
• Container Breakpoint (ContainerReader)
• Using Tabs (Tabs)
• Immersive Effect Development
• Layout Optimization
• List and Grid Overview
• Creating a List (List)
• Creating an Arc List (ArcList) (Recommended for Circular Screens)
• Creating a Grid (Grid/GridItem)
• Grid Item Drag-and-Drop
• Creating a Waterfall Flow (WaterFlow)
• Common Waterfall Operations
• Creating Lazy Layouts (LazyColumnLayout/LazyVGridLayout/LazyVWaterFlowLayout)
• Creating a Lazy Custom Layout (LazyDynamicLayout)
• Common List Flows
• Introduction to Text
• Text Display (Text/Span)
• Text Input (TextInput/TextArea/Search)
• Rich Text Editing (RichEditor)
• Symbol Glyph (SymbolGlyph/SymbolSpan)
• Styled String (StyledString/MutableStyledString)
• Text and Image Layout
• Soft Keyboard Management
• Selection and Development of Rich Text Display
• Text Expansion and Collapse
• Custom Keyboard
• Image Display (Image)
• Video Playback (Video)
• Creating a Swiper (Swiper)
• Creating an Arc Carousel Component (ArcSwiper) (Recommended for Circular Screens)
• colorFilter-based Image Filter Effect
• Image Resizing with the resizable Attribute
• Button and Selection Component Overview
• Button
• Arc Button (ArcButton) (Recommended for Circular Screens)
• Radio Button (Radio)
• Toggle
• Custom Rendering (XComponent)
• Progress Indicator (Progress)
• Popup Window Overview
• Dialog Overview
• Global Custom Dialog Box Independent of UI Components (openCustomDialog)
• Basic Custom Dialog (CustomDialog)
• Fixed-Style Dialog Box
• Page-Level Dialog Box
• Dialog Box Layer Management
• Dialog Controller
• Dialog Box Focus Policy
• Dialog Mask Control
• Menu Overview
• Menu Control (Menu)
• Global Menu Independent of UI Components (openMenu)
• Popup Overview
• Popup
• Global Popup Independent of UI Components (openPopup)
• Modal Page Overview
• Binding a Semi-Modal Sheet (bindSheet)
• Binding a Full-Modal Page (bindContentCover)
• Using Toasts (Toast)
• Managing Overlays (OverlayManager)
• Custom Dialog Selection and Development
• Immersive Light Sense Overview
• Enabling Immersive Light Sensing
• Immersive System Material Visual Effects
• Immersive Lighting Power Consumption Optimization
• FAQs About Immersive Light Sensing
• Typical Scenarios of Immersive Light Sensing
• Geometric Shape Drawing Overview
• Drawing Geometric Shapes (Shape)
• Clipping Shapes (clipShape)
• Interaction Response Overview
• Interaction Mechanism Overview
• Handling Touchscreen Input Events
• Handling Mouse Input Events
• Handling Touchpad Input Events
• Handling Keyboard Input Events
• Handling Gamepad Input Events
• Handling Crown Events
• Supporting Smart Gesture Input Events
• Gesture Binding
• Single Gesture
• Combined Gestures
• Multi-level Gesture Events
• Gesture Conflict Handling
• Implementing Unified Drag and Drop
• Implementing Focus Support
• Animation Overview
• Property Animation Overview
• Implementing Property Animation
• Custom Property Animation
• Transition Animation Overview
• Enter/Exit Transition
• Modal Transition
• Shared Element Transition
• Rotation Transition Animation
• Page Transition Animation (Not Recommended)
• Particle Animation
• Component Animation
• Animation Curve Overview
• Traditional Curve
• Spring Curve
• Animation Smoothing
• Shadow Effect
• Color Effect
• Motion Blur
• Comparison Between Motion Blur and Static Blur
• Efficient Use of Blur
• Frame Freezing and Blurring Troubleshooting
• Frame Animation (ohos.animator)
• Optimizing Animation Performance
• Customization Capability Overview
• Custom Composition
• Custom Node Overview
• Custom Placeholder Nodes
• Custom Component Node (FrameNode)
• Custom Render Node (RenderNode)
• Custom Declarative Node (BuilderNode)
• Setting Custom Node Cross-Language Attributes
• Dynamic Component Creation
• Drawing Custom Graphics on the Canvas (Canvas)
• Custom Drawing Modifier (DrawModifier)
• Custom Extension Capability Overview
• Content Modifier (ContentModifier)
• Attribute Modifier (AttributeModifier)
• Attribute Updater (AttributeUpdater)
• Implementing UI Internationalization
• Accessibility Development
• Supporting Aging-Friendly Design
• Implementing Dark and Light Mode Adaptation
• Configuring In-Application Theme Skinning
• Using the UI Context API for UI Operations (UIContext)
• Using Component Snapshot (ComponentSnapshot)
• Long Screenshot
• Detecting Component Visibility
• Inspecting Page Layouts
• Media Query (@ohos.mediaquery)
• Full-Screen Launch of Atomic Services (FullScreenLaunchComponent)
• In-Application Embedded Component (EmbeddedComponent)
• NDK-Based UI Development Overview
• Embedding ArkTS Components
• Integrating with ArkTS Pages
• Using Layout Components
• Setting Common Layout Attributes
• Using Navigation Components
• Implementing a List Layout
• Implementing a Waterfall Flow Layout
• Using Grids
• Using the Text Component
• Using Styled Strings
• Adding a Text Event Listener for a Text Box
• Image Display (Image)
• Using the Swiper Container
• Building Form Components
• Building a Dialog Box
• Animation Overview
• Animation Development
• Using the Sliding Selector (Picker)
• Adding an Event Listener
• Binding Basic Input Events
• Binding Gesture Events
• Binding Drag Events
• Building Custom Components
• Custom Drawing
• Integrating Accessibility Through Custom Drawing
• Launching EmbeddedUIExtensionAbility with EmbeddedComponent
• Querying and Operating NDK Nodes
• NDK Multi-Instance Scenario Development
• NDK Multi-thread Component Creation
• Building a Rendering Node
• UI Development (JavaScript-compatible Web-like Development Paradigm) Overview
• File Organization
• "js" Tag
• app.js
• HML
• CSS
• JavaScript
• Lifecycle
• Resource Limitations and Access
• Multi-Language Capability
• Component Overview
• Layout Description
• Adding Title and Paragraph Text
• Adding an Image
• Adding a Comment Area
• Adding a Container
• Adding Interactions
• Developing Animations
• Defining Gesture Events
• Defining Page Routes
• list Development
• dialog Development
• form Development
• stepper Development
• tabs Development
• swiper Development
• text Development
• input Development
• button Development
• picker Development
• image Development
• image-animator Development
• rating Development
• slider Development
• chart Development
• switch Development
• toolbar Development
• menu Development
• marquee Development
• qrcode Development
• search Development
• Canvas
• CanvasRenderingContext2D
• Path2D
• OffscreenCanvasRenderingContext2D
• Grid Layout
• Basics
• Graph Drawing
• Path Drawing
• Text Drawing
• Attribute Style Animation
• Animation with the transform Attribute
• Animation with the background-position Attribute
• Animation for SVG Components
• Component Animation
• Animation Effect
• Animation Frame
• Custom Components
• Using WebGL to Draw Graphics
• UI Stability Issue Analysis Overview
• Common UI-Related Application Crash Issues
• Common UI Application Freezing Issues
• Debugging UI Display Exceptions
• UI Context Debugging
• UI Preview
• UI Profiling
• High-Performance UI Development
• Navigation FAQs
• FAQs About Custom Nodes
• FAQs About Buttons and Selection Components
• Popup Component FAQs
• FAQs About Text Components
• FAQs About Dynamic Attribute Setting
• FAQs About Imperative Nodes
• FAQs About UI Parallelization
• Common Gesture Event Conflicts
• Window Overview
• Window Type Development Overview
• Subwindow Development
• Dialog Window Development
• Global Floating Window Development
• Float View Development
• Floating Ball Development
• PiP Development Overview
• Using XComponent to Develop PiP (ArkTS)
• Using typeNode to Develop PiP (ArkTS)
• Using NDK APIs to Develop PiP (C/C++)
• PiP FAQs
• Window Mode Overview
• Introduction to Multi-Window
• Declaring the Support for Multi-Window
• Adapting the Application Layout to Multi-Window
• Implementing the Avoid Area for the Window-top Control Bar
• Freeform Window Overview
• App Adaptation for Freeform Windows
• Window Lifecycle
• Window Rotation
• Window Rotation Practical Cases
• Window Layout
• Window Focus
• Window Z-Order
• Immersive Window
• Screenshot and Privacy Mode (ArkTS)
• Controlling Brightness and Always-On (ArkTS)
• Setting Window Animation Effects (ArkTS)
• Controlling Window Appearance (ArkTS)
• Using WindowManager to Manage Multimodal Input Events (C/C++)
• Application Starting Window Overview
• Configuring the Application Starting Window
• Configuring Starting Window Resources
• Window Metadata Configuration
• Glossary
• Window Development FAQs
• Common Log Issues and Troubleshooting in Window Development
• Display Management Overview
• Using OH_DisplayManager to Obtain Basic Display Information and Listen for Status Changes (C/C++)
• Using Display to Obtain Display Properties and Listen for Status Changes (ArkTS)
• Glossary
• Display Development FAQs
• ArkUI Glossary
• About This Kit
• ArkWeb Process
• Lifecycle of the Web Component
• Developing User-Agent
• Managing Cookies and Data Storage
• Setting Dark Mode
• Opening Pages in a New Window
• Managing Location Permissions
• Using Incognito Mode
• Using Motion and Orientation Sensors
• Rendering Modes of the Web Component
• Fitting In the Page Content Layout
• Optimizing the Page Flash During the Redirection
• Obtaining the Web Page Content Height
• Invoking Frontend Page Functions on the Application
• Invoking Application Functions on the Frontend Page
• Establishing a Data Channel Between the Application and the Frontend Page
• Mutual Invoking Between the Application and the Frontend Page (C/C++)
• Establishing a Data Channel Between the Application and the Frontend Page (C/C++)
• Implementing Nested Scrolling
• Implementing Content Scrolling
• Docking to the Soft Keyboard
• Managing Focus
• Interacting with Applications Using Gestures
• Zooming Web Pages
• Displaying Web Page Dialog Boxes
• Interacting with Web Pages Using the Drag-and-Drop Feature of the Web Component
• Simulated Click Detection for Web Applications
• Resolving Cross-Origin Resource Access
• Intelligent Tracking Prevention
• Using the Ad Blocking Feature
• Using Secure Shield Mode
• Loading Web Pages
• Using the Web Component Interception Capability
• Managing Page Redirection and Browsing History Navigation
• Intercepting Network Requests Initiated by the Web Component
• Customizing Page Request Responses
• Accelerating Web Page Access
• Setting the Backward-Forward Cache
• Migrating Web Components Between Different Windows
• Uploading Files
• Downloading Files
• Starting a Camera and Microphone
• Taking Over the Media Playback on Web Pages
• Enabling Picture-in-Picture
• Enabling Immersive Full-Screen Video Playback
• Printing Frontend Pages
• Saving a Frontend Page as a PDF File
• Previewing PDF Files
• Calculating and Adjusting Safe Area Insets
• Using Web Component Menus to Process Web Content
• Processing Web Page Content by Interacting with the System Clipboard
• Using Smart Text Data Detector
• Implementing Long Screenshot for the Web Component
• Using Same-Layer Rendering
• Rendering Native Components at the Same Layer
• Using Offline Web Components
• Using WebNativeMessagingExtensionAbility to Implement Communication Between Browser Extensions and Applications
• Debugging Frontend Pages by Using DevTools
• Using Crashpad to Collect Web Component Crash Information
• Troubleshooting White Screen Issues on Web Pages
• Using Hypium to Implement ArkWeb Automated Testing
• Locating Web Page Loading Issues
• Glossary
• About This Kit
• Transient Task (ArkTS)
• Transient Task (C/C++)
• Continuous Task (ArkTS)
• Deferred Task (ArkTS)
• Agent-powered Reminder (ArkTS)
• Background Tasks Kit Integration Specifications
• Glossary
• About This Kit
• Client-Server Interaction Process
• Server Application Development
• Client Application Development
• Content Embed Kit FAQs
• Content Embed Kit Terminology
• About This Kit
• Application File Overview
• Application Sandbox
• Accessing Application Files (ArkTS)
• Accessing Application Files (C/C++)
• Obtaining Application and File System Space Statistics
• Sharing an Application File
• Configuring the Application Shared Directory
• Application Data Backup and Restore Overview
• Accessing Backup and Restore
• Verification Guide for App Data Backup and Restore
• Adaptation Guide for Application Clone
• Introduction to Application Data Migration
• Adaptation Process
• Application Data Migration and Adaptation
• Developer Self-Verification
• E2E Verification
• FAQs
• Precautions for Code Development During Application Upgrade
• User File Overview
• User File URI
• FileUri Development (C/C++)
• Obtaining the User Directory Environment (C/C++)
• Selecting User Files
• Saving User Files
• Persisting Temporary Permissions
• Persisting Temporary Permissions (C/C++)
• Obtaining and Accessing a User Directory
• Distributed File System Overview
• Setting the Security Level of a Distributed File
• Sharing and Accessing Files Across Devices
• Copying Files Across Devices
• Device-Cloud File Sync Overview
• Device-Cloud File Sync Integration
• Compression and Decompression Overview
• Archive File Compression and Decompression (C/C++)
• Streaming Compression and Decompression (C/C++)
• Buffer Compression and Decompression (C/C++)
• Accessing Files on the Native Side
• About This Kit
• Knowledge Processing
• RAG Overview
• Knowledge Q&A
• Configuring a Prompt Template
• Configuring Hyperparameters
• Configuring a Thought Template
• Complete Sample Code
• Intelligent Data Retrieval-ArkTS
• Intelligent Data Retrieval-C++
• On-Device Q&A Model
• RAG Glossary
• On-Device Q&A Model Glossary
• About This Kit
• ArkTS Widget Overview
• Creating an ArkTS Widget
• Configuring ArkTS Widget Configuration Files
• Managing ArkTS Widget Lifecycle
• ArkTS Widget Process Model
• Overview of ArkTS Widget UI Development
• Using Animations in ArkTS Widgets
• Using Canvas in ArkTS Widgets
• Using Custom Fonts in ArkTS Widgets
• Overview of ArkTS Widget Update
• Active Update of ArkTS Widgets
• Passive Update of ArkTS Widgets
• Push Updates for ArkTS Widgets
• Updating Local and Online Images in the Widget
• Updating Widget Content by State
• Overview of ArkTS Widget Page Interaction
• Redirecting to an Application Page (router Event)
• Launching UIAbility to the Background (call Event)
• Transferring Messages to an Application (message Event)
• Updating Widget Content Through the router or call Event
• Editing ArkTS Widgets
• Adding ArkTS Widgets to the Home Screen from Within an App
• ArkTS Lock Screen Widget
• ArkTS Transparent Widget
• Standby Screen Widgets
• Overview of Interactive Widgets
• Developing a Fun-based Widget
• Developing a Scene-based Widget
• Music Widget
• Widget Updates and Data Interaction
• ArkTS Widget Adaptation FAQs
• JS Widget Overview
• Developing a JS Widget (Stage Model)
• Developing a JS Widget (FA Model)
• Glossary
• About This Kit
• Implementing an Input Method Application
• Using the Input Method in a Custom Edit Box
• Switching Between Input Methods
• Setting Input Method Subtypes
• Security Mode of the Input Method
• Using the Input Method in a Custom Edit Box (C/C++)
• Immersive Mode of the Input Method Application
• IME Tool
• Input Box and Input Method Interaction in Non-Focusable Windows
• Glossary
• About This Kit
• IPC and RPC Development (ArkTS)
• IPC and RPC Development (C/C++)
• Subscribing to State Changes of a Remote Object
• Glossary
• About This Kit
• UI Design for Internationalization
• Locale ID and Cultural Habit Division
• System Language and Region
• Preferred Language
• User Preferences
• Date and Time Formatting
• Number and Unit of Measurement Formatting
• Phone Number Formatting
• Calendar Setting
• Time Zone Setting
• DST Transition
• Overview of Multilingual Sorting
• Sorting by Local Habits
• Sorting by Indexes
• Character Processing
• Overview
• Language and Locale Name Localization
• Multilingual Adaptation
• Hard Coding and Concatenation Prevention
• Scene and Context Clarification for Translation
• Singular/Plural Form Selection
• Overview of Pseudo-Localization Testing
• Pseudo-Localization Testing for Translation
• Pseudo-Localization Testing for UI Mirroring
• Linguistic Testing
• Glossary
• About This Kit
• (Recommended) Layered Icon Processing
• Single-Layer Icon Processing
• Setting the Dynamic Blur Style
• Setting the Message Reminder
• Configuring the Custom Area
• Dynamically Displaying and Hiding the Title Bar
• Configuring the Sheet Style
• Setting the Icon Type
• Configuring In-App Multi-Window
• Development Example
• Configuring the Sidebar in Overlay Mode
• Configuring the Sidebar in Embed Mode
• Sidebar Menu Style
• Setting Tab Bar Dividers
• Setting the Tab Bar Blur Style
• Configuring the Tab Icon Bleed Style
• Configuring the Sidebar Half-Screen-based Center-Aligned Style
• Setting the Tab Bar Floating Style
• Configuring a Persistent Notification Pop-up
• Configuring a Scheduled Notification Pop-up
• Configuring a Component with a Primary Button
• Configuring a Component Without a Primary Button
• Configuring the List Style with Horizontal Swipe Animation
• Configuring the List Card Style
• Loading a Custom Symbol for an App
• Point-Light Effect
• Shadow Effect upon a Press
• Dual-Edge Flowing Light Effect
• Background Flowing Light Effect
• Dual-Edge Flowing Light with a Background
• In-App Multi-Window
• Immersive Light
• Color Selection and Favorites Management
• How Do I Obtain the layeredDrawableDescriptor Object Information?
• What Are the Possible Causes and Solutions for 401 Parameter Check Failure?
• Glossary
• Access Control Overview
• Application Permission Management Overview
• Workflow for Requesting Permissions
• Declaring Permissions
• Requesting User Authorization
• Requesting User Authorization for the Second Time
• Requesting One-Time User Authorization
• Manual Authorization
• Requesting Restricted Permissions
• Open system_grant Permissions
• Open user_grant Permissions
• Restricted Permissions
• Permissions for Enterprise Applications
• Permissions for MDM Applications
• Application Permission Groups
• Removing Requested Permissions
• FAQs About Packet Capture/Debugging Permission
• Security Component Overview
• Using PasteButton
• Using SaveButton
• Using System Pickers
• Overview of the Password Autofill Service
• Quick Adaptation
• Autosave of Accounts and Passwords
• Updates of Accounts and Passwords
• Autofill of Accounts and Passwords
• Autofill of Strong Passwords
• Suggestions on Automatically Generating Strong Passwords for Applications
• Adaptation Suggestions for Custom Layouts
• Adaptable Scenarios
• Adding Password Vault for Web Pages
• Sharing Account Data Between Applications and Web Pages
• Application Encryption
• About This Kit
• Protecting Asset Data
• Protecting Asset Data with User Authentication
• Adding an Asset (ArkTS)
• Removing Assets (ArkTS)
• Updating an Asset (ArkTS)
• Querying Assets (ArkTS)
• Querying Assets Used for User Authentication (ArkTS)
• Adding Assets in Batches (ArkTS)
• Removing Assets in Batches (ArkTS)
• Updating Assets in Batches (ArkTS)
• Managing Assets in a Group (ArkTS)
• Syncing Assets (Backup and Restore) (ArkTS)
• Adding an Asset (C/C++)
• Removing Assets (C/C++)
• Updating an Asset (C/C++)
• Querying Assets (C/C++)
• Managing Assets in a Group (C/C++)
• Syncing Assets (Backup and Restore) (C/C++)
• Glossary
• About This Kit
• Running a Data App to Process Data
• Glossary
• About This Kit
• Randomly Generating a Symmetric Key (ArkTS)
• Randomly Generating a Symmetric Key (C/C++)
• Converting Binary Data into a Symmetric Key (ArkTS)
• Converting Binary Data into a Symmetric Key (C/C++)
• Randomly Generating an Asymmetric Key Pair (ArkTS)
• Randomly Generating an Asymmetric Key Pair (C/C++)
• Converting Binary Data into an Asymmetric Key Pair (ArkTS)
• Converting Binary Data into an Asymmetric Key Pair (C/C++)
• Generating an Asymmetric Key Pair Based on Key Parameters (ArkTS)
• Generating an Asymmetric Key Pair Based on Key Parameters (C/C++)
• Converting a Compressed or Uncompressed ECC Public Key (ArkTS)
• Converting a Compressed or Uncompressed ECC Public Key (C/C++)
• Converting Compressed or Uncompressed ECC Point Data (ArkTS)
• Converting Compressed or Uncompressed ECC Point Data (C/C++)
• Converting a PEM String into an Asymmetric Key Pair (ArkTS)
• Converting a PEM String into an Asymmetric Key Pair (C/C++)
• Encoding and Decoding with an RSA Private Key (ArkTS)
• Encoding and Decoding with an RSA Private Key (C/C++)
• Obtaining a Public Key from a Private Key (ArkTS)
• Obtaining a Public Key from a Private Key (C/C++)
• Encryption and Decryption with an AES Symmetric Key (ArkTS)
• Encryption and Decryption with an AES Symmetric Key (C/C++)
• Encryption and Decryption with a DES Symmetric Key (ArkTS)
• Encryption and Decryption with a DES Symmetric Key (C/C++)
• Encryption and Decryption with a 3DES Symmetric Key Pair (ArkTS)
• Encryption and Decryption with a 3DES Symmetric Key Pair (C/C++)
• Encryption and Decryption with an SM4 Symmetric Key (ArkTS)
• Encryption and Decryption with an SM4 Symmetric Key (C/C++)
• Encryption and Decryption with a ChaCha20 Symmetric Key Pair (ArkTS)
• Encryption and Decryption with a ChaCha20 Symmetric Key Pair (C/C++)
• Encryption and Decryption with an RSA Asymmetric Key Pair (ArkTS)
• Encryption and Decryption with an RSA Asymmetric Key Pair (C/C++)
• Encryption and Decryption with an SM2 Asymmetric Key Pair (ArkTS)
• Encryption and Decryption with an SM2 Asymmetric Key Pair (C/C++)
• Encryption and Decryption of Symmetric Keys with AES-WRAP (ArkTS)
• Encryption and Decryption of Symmetric Keys with AES-WRAP (C/C++)
• Converting SM2 Ciphertext (ArkTS)
• Converting SM2 Ciphertext (C/C++)
• Encryption and Decryption with an RC2 Symmetric Key (CBC Mode) (ArkTS)
• Encryption and Decryption with an RC4 Symmetric Key (ArkTS)
• Encryption and Decryption with ECIES (ArkTS)
• Encryption and Decryption Using ECIES (C/C++)
• Signing and Signature Verification with an RSA Key Pair (ArkTS)
• Signing and Signature Verification with an RSA Key Pair (C/C++)
• Signing and Signature Verification with an ECDSA Key Pair (ArkTS)
• Signing and Signature Verification with an ECDSA Key Pair (C/C++)
• Signing and Signature Verification with an ECC Key Pair (ArkTS)
• Signing and Signature Verification with an SM2 Key Pair (ArkTS)
• Signing and Signature Verification with an SM2 Key Pair (C/C++)
• Converting SM2 Signature Formats (ArkTS)
• Converting SM2 Signature Formats (C/C++)
• Signing and Signature Verification Using ML-DSA Key Pairs (ArkTS)
• Key Agreement Using ECDH (ArkTS)
• Key Agreement Using ECDH (C/C++)
• Key Agreement Using X25519 (ArkTS)
• Key Agreement Using X25519 (C/C++)
• Key Agreement Using DH (ArkTS)
• Key Agreement Using DH (C/C++)
• Key Encapsulation and Decapsulation Using KEM (ArkTS)
• Generating an MD Using SHA-256 (ArkTS)
• Generating an MD Using SHA-256 (C/C++)
• Generating an MD Using MD5 (ArkTS)
• Generating an MD Using MD5 (C/C++)
• Generating an MD Using SHA-3 (ArkTS)
• Generating an MD Using SHA-3 (C/C++)
• Generating an HMAC (ArkTS)
• Generating an HMAC (C/C++)
• Generating a CMAC (ArkTS)
• Generating a CMAC (C/C++)
• Generating Secure Random Numbers (ArkTS)
• Generating Secure Random Numbers (C/C++)
• Generating Secure Random Numbers with Hardware Entropy Sources (ArkTS)
• Generating Secure Random Numbers with Hardware Entropy Sources (C/C++)
• Key Derivation Using PBKDF2 (ArkTS)
• Key Derivation Using PBKDF2 (C/C++)
• Key Derivation Using HKDF (ArkTS)
• Key Derivation Using HKDF (C/C++)
• Key Derivation Using Scrypt (ArkTS)
• Key Derivation Using Scrypt (C/C++)
• Key Derivation Using X963KDF (ArkTS)
• Key Derivation Using X963KDF (C/C++)
• Cross-Platform Data Encryption and Decryption Compatibility
• Glossary
• About This Kit
• DLP Service Development (ArkTS)
• DLP Service Development (C/C++)
• Adapting to Encrypted Share
• Data Protection Kit Glossary
• About This Kit
• Certificate Framework Overview
• Certificate Development
• Certificate Extension Development
• CRL Development
• Creating a TrustAnchor Object Array from a PKCS #12 File
• Certificate Chain Validator Development
• Certificate and CRL Collection Development
• Certificate Chain Development
• Using the Prebuilt CA Certificate to Validate a Certificate Chain
• Certificate Signing with CMS
• Certificate Encapsulation with CMS
• Certificate Signature Verification with CMS
• Certificate Decapsulation with CMS
• Creating and Parsing a Certificate with PKCS #12
• Online Validation of Certificate Revocation Status of a Certificate Chain
• Downloading the Missing Intermediate CA Certificate During Certificate Chain Validation
• Building and Verifying a Certificate Chain
• Certificate Manager Overview
• CA Certificate Development
• Application Certificate Development
• User Certificate Credential Development
• System Certificate Credential Development
• Glossary
• About This Kit
• Service Quota
• Enabling Device Security Kit
• Generating a JWT Based on a Service Account
• DeviceVerify
• Enhanced System Integrity Check
• System Integrity Check
• URL Check
• Local System Integrity Check
• Unified Risk Control Credential
• Image Security Verification
• Location Security Verification
• Secure Image Compression and Cropping
• Verifying the Anonymous Certificate Chain
• Verifying the Signature
• TrustedAppService Glossary
• Overview
• Setting the Digital Shield Password
• Changing the Digital Shield Password
• Disabling the Digital Shield Service
• Password-based Transaction Authentication
• Enabling Biometric Authentication
• Performing Biometric Transaction Authentication
• Disabling the Authentication Capability of a Specified Biometric Feature
• Digital Shield Signature Key Backup and Restoration
• Digital Shield Access in Web Page Scenarios (FIDO2)
• TrustedAuthentication Glossary
• Single-Client Subscription
• Subscribing to Notification Events
• Subscribing to Authentication Events
• Process Information Query
• Code Signature Information Query
• Querying Notification Client Information
• Querying Authentication Client Information
• Subscribing to Notification Events
• Subscribing to Authentication Events
• Process Information Query (C/C++)
• Code Signature Information Query (C/C++)
• Querying Notification Client Information (C/C++)
• Querying Authentication Client Information (C/C++)
• Fraud Detection
• Simulated Click Detection
• Enhanced Simulated Click Detection
• Terms of BusinessRiskIntelligentDetection
• RiskControlEngine
• Device Security Mode Query (C/C++)
• Obtaining Fraudulent Messages
• Obtaining Fraudulent Call Logs
• Obtaining Fraudulent Apps
• Screen Privacy
• VirusProtectionServiceManager (C/C++)
• Querying the Super Privacy Mode Status
• Querying the Super Privacy Policy Status
• Subscribes to Super Privacy mode change events.
• Subscribing to Super Privacy Mode and Policy Change Events
• Personal Data Processing Information
• Supported Countries/Regions
• About This Kit
• Development Preparations
• Starting a File Scanning Task
• File Opening
• Setting Tags for a File
• Obtaining the Tags of a File
• Obtaining the URI of a File
• Deleting a File from a Specified Path
• Updating a Security Control Policy
• Setting the KIA File List
• Subscribing to and Unsubscribing from KIA File Copy, Rename, and Compress Events
• Setting a Watermark Image for KIA Files
• Adding, Deleting, and Obtaining an App Trustlist
• Setting HDC Authentication Keys
• Subscribing to or Unsubscribing from Printing Service Startup Events
• Process Management
• Obtaining the Enterprise Recovery Key for Decrypting Hard Disk Data
• Obtaining the Enterprise Recovery Key for Resetting the Screen Lock Password
• Obtaining a Challenge
• Signing a Challenge
• Updating the Enterprise Public Key Certificate
• Deleting an Enterprise Recovery Key
• Lite Import Title
• Glossary
• About This Kit
• Preparations
• App Directory Scanning
• File Opening
• File Isolation
• Isolated File Restoration
• Deletion of Isolated Files
• Isolation Query
• Threat Process Termination
• Enterprise Threat Protection Kit FAQs
• Glossary
• About This Kit
• Development Preparations
• FIDO Passwordless Authentication
• IFAA Passwordless Authentication
• SOTER Passwordless Authentication
• Overview
• Authentication Using Passkeys (ArkTS)
• Authentication Using Passkeys (C/C++)
• DID Digital Identity
• Glossary
• IFAA FAQs
• Personal Data Processing Information
• Website Link Disclaimer
• About This Kit
• Basic Concepts of Local Key Management
• Key Generation Overview and Algorithm Specifications
• Generating a Key (ArkTS)
• Generating a Key (C/C++)
• Key Import Overview and Algorithm Specifications
• Importing a Key in Plaintext (ArkTS)
• Importing a Key in Plaintext (C/C++)
• Importing a Key in Secure Mode (ArkTS)
• Importing a Key in Secure Mode (C/C++)
• Importing a Key Using a Digital Envelope (ArkTS)
• Importing a Key Using a Digital Envelope (C/C++)
• General Process of Using a Key
• Encryption and Decryption Overview and Algorithm Specifications
• Encryption and Decryption (ArkTS)
• Encryption and Decryption (C/C++)
• Signing and Signature Verification Overview and Algorithm Specifications
• Signing and Signature Verification (ArkTS)
• Signing and Signature Verification (C/C++)
• Key Agreement Overview and Algorithm Specifications
• Key Agreement (ArkTS)
• Key Agreement (C/C++)
• Key Encapsulation Mechanism and Algorithm Specifications
• Encapsulating a Key (ArkTS)
• Key Derivation Overview and Algorithm Specifications
• Key Derivation (ArkTS)
• Key Derivation (C/C++)
• HUKS Access Control Overview
• HUKS Access Control Development
• Refined Access Control Development
• HMAC Overview and Algorithm Specifications
• HMAC (ArkTS)
• HMAC (C/C++)
• CMAC (ArkTS)
• CMAC (C/C++)
• Deleting a Key (ArkTS)
• Deleting a Key (C/C++)
• Key Attestation Overview and Algorithm Specifications
• Anonymous Key Attestation (ArkTS)
• Anonymous Key Attestation (C/C++)
• Offline Anonymous Key Attestation (ArkTS)
• About Application Attestation
• Application Development
• Server Development
• Application Development
• Server Development
• Integration Design Practice for Verifying the Authenticity of Application Requests
• Checking a Key (ArkTS)
• Checking a Key (C/C++)
• Obtaining Key Properties (ArkTS)
• Obtaining Key Properties (C/C++)
• Exporting a Key (ArkTS)
• Exporting a Key (C/C++)
• Querying Key Aliases (ArkTS)
• Querying Key Aliases (C/C++)
• About Exporting and Importing a Key in Ciphertext
• Exporting and Importing a Key in Ciphertext (ArkTS)
• Exporting and Importing a Key in Ciphertext (C/C++)
• Group Key Overview
• Group Key (ArkTS)
• Group Key (C/C++)
• External Key Management Extension Overview
• Provider Management Overview and Specifications
• Registering and Unregistering a Provider (ArkTS)
• Registering and Unregistering a Provider (C/C++)
• Resource Management Overview and Specifications
• Obtaining a Resource ID (ArkTS)
• Opening/Closing a Resource (ArkTS)
• Opening and Closing Resources (C/C++)
• Key Generation, Import, and Export
• Generating a Key (ArkTS)
• Importing a Key (ArkTS)
• Exporting a Public Key (ArkTS)
• UKey PIN Authentication Overview and Specifications
• Authentication Status Query (ArkTS)
• Authentication Status Query (C/C++)
• Clearing the UKey PIN Authentication Status (ArkTS)
• Signing and Signature Verification Overview and Algorithm Specifications
• Signing and Signature Verification (ArkTS)
• Signing and Signature Verification (C/C++)
• General Query Overview and Specifications
• General Query (ArkTS)
• General Query (C/C++)
• Setting Properties (ArkTS)
• Obtaining Error Information (ArkTS)
• UKey Process Example
• CryptoExtensionAbility Extension Capability Overview
• CryptoExtensionAbility Adaptation Development
• Personal Data Processing Information
• Glossary
• About This Kit
• Before You Start
• Obtaining Supported Authentication Capabilities
• Initiating User Authentication
• Canceling User Authentication
• Perceiving and Adjusting the Authentication Process
• Applying Custom Authentication
• Obtaining Enrolled Credential Status
• Using userAuthIcon
• Obtaining the Locking Status of a Specified Authentication Type
• Companion Device Authentication
• How to Detect Changes in Device Fingerprints for Fingerprint Login
• How to Detect Authentication Failure During Fingerprint Login
• Glossary
• About This Kit
• Accessory Integration
• An Exception Occurs During API Calls, and the Expected Operation Cannot Be Completed
• Glossary
• About This Kit
• Bluetooth Overview
• Bluetooth Setting
• Device Discovery
• Device Pairing
• SPP-based Connection and Data Transmission
• BLE Scanning and Advertising
• GATT-based Connection and Data Transmission
• 401 Invalid Parameter Reported When an Optional Property Is Explicitly Set to undefined
• Bluetooth Glossary
• NFC Development
• NFC Tag Read/Write Development
• HCE Development
• SE Access Development
• WLAN Service Development Overview
• P2P Connection Development
• STA Development
• Wi-Fi Scan Development
• Converged Short-Range Service Development
• Interconnection Between Partner Devices and HarmonyOS Devices
• Converged Short-Range Glossary
• NearLink Overview
• Getting Started
• Discovering NearLink Devices
• Managing SSAP Connections and Services
• Transferring Data over NearLink
• Obtaining NearLink Coordinated Devices Set Information
• NearLink FAQs
• NearLink Glossary
• About This Kit
• Distributed Device Management Development
• Cross-Device UIAbility Connection Development
• Enhanced Connection Development
• About This Kit
• Preparations
• Checking Whether NearLink Is Supported
• Querying NearLink Status
• Sending NearLink Advertising Packets
• Initiating NearLink Scanning
• SSAP Server
• SSAP Client
• Transferring Data Using NearLink
• Obtaining NearLink Cooperative Device Set Information
• FAQs
• Glossary
• About This Kit
• Using HTTP for Network Access
• Using WebSocket for Network Access
• Using WebSocket for Network Access (C/C++)
• Using Socket for Network Access
• Using MDNS for LAN Access
• Using DNS for Domain Name Resolution
• Using HTTP Global Interceptor (C/C++)
• Network Connection Management
• Network Connection Management (C/C++)
• VPN Management
• Application Network Reconnection
• Network Information Query and Connection Management
• Network Connection Security Configuration
• Collecting Network Statistics
• Using the Network Firewall
• Extensible Authentication
• Glossary
• About This Kit
• Preparations
• Network Quality Assessment
• Network Scenario Identification
• App Data Transmission Quality Feedback
• Weak Network Signal Awareness and Judgment
• Network Handover Notification
• Handover Mode Setting
• Overview
• Setting the Service Scenario
• Listening to the Multi-Network Concurrency Status
• Listening to Multi-Network Concurrency Suggestions
• Querying Multi-Network Concurrency Quota Information
• Initiating and Releasing Multi-Network Concurrency
• Network Acceleration Based on Multi-Network Concurrency
• Network Quality Assessment (C/C++)
• Network Scenario Identification (C/C++)
• App Data Transmission Quality Feedback (C/C++)
• Weak Network Signal Awareness and Judgment (C/C++)
• Network Handover Notification (C/C++)
• Handover Mode Setting (C/C++)
• Setting the Service Scenario (C/C++)
• Listening to the Multi-Network Concurrency Status (C/C++)
• Listening to Multi-Network Concurrency Suggestions (C/C++)
• Querying Multi-Network Concurrency Quota Information (C/C++)
• Initiating and Releasing Multi-Network Concurrency (C/C++)
• How Do I Determine Whether the Current Network Is a Wi-Fi or Cellular Network During Multi-Network Concurrent Transmission?
• What Will Happen If the Quota of Multi-Network Concurrency Is Used Up?
• Glossary
• About This Kit
• Preparations
• Sending a Network Request (ArkTS)
• Canceling a Network Request (ArkTS)
• Closing a Session (ArkTS)
• Sending a Network Request (C++)
• Canceling a Network Request (C++)
• Closing a Session (C++)
• DnsConfiguration: DNS Customization
• TransferConfiguration: Data Transmission Customization
• ProxyConfiguration: Proxy Customization
• SecurityConfiguration: Secure Transmission Customization
• ProcessingConfiguration: Processing Customization
• Interceptor: Richer and Higher-Level Customization Capabilities
• Implementing Upload and Download Quickly
• Implementing the Function of Suspending/Resuming Requests and Resuming Transfer
• Streaming
• Performance Maintenance and Test Based on TracingConfiguration
• Transmission Performance Optimization Based on Configuration
• Basic HTTP Caching Function
• Cache Sharing Between Sessions
• Customizing a Cache Interceptor
• Boosting HTTP Transmission Performance Through Pre-connection
• Receiving Push Messages over a QUIC Long-Lived Connection
• Calling a Remote Program Using URPC
• Glossary
• About This Kit
• Introduction to Device Interconnectivity
• Development Guide for Device Interconnectivity
• Overview of Device Interconnectivity in NDK
• Development Guide for Device Interconnectivity in NDK
• Device Interconnectivity (RichEditor Control)
• OneHop for Device Interaction
• After the Device Interconnectivity Control Is Connected, No Devices Are Available for Selection
• About This Kit
• Call Service Development
• SMS Service Development
• Glossary
• Getting Started with Network Navigator
• Capturing Packets with tcpdump Using Network Packet Analysis
• About This Kit
• Introduction to Common Events
• Subscribing to Common Events in Dynamic Mode
• Unsubscribing from Common Events in Dynamic Mode
• Publishing Common Events
• Subscribing to Common Events in C
• Unsubscribing from Common Events in C
• Publishing Common Events in C
• Common Event Service Terminology
• Using Emitter for Inter-Thread Communication
• System Account Introduction
• Managing Application Accounts
• USB Service Development Overview
• USB Device Management
• USB Control Transfer
• USB Interrupt Transfer
• USB Bulk Transfer
• USB Isochronous Transfer
• USB Serial Communication Development Overview
• USB Serial Configuration Management
• USB Serial Communication Management
• FAQs
• USB Service Glossary
• Serial Port Communication Development
• Sample Server Development Overview
• Sample Server Development
• Update Service Terminology
• Requesting Permissions to Access the Pasteboard
• Using the Pasteboard to Copy and Paste
• Using the Pasteboard to Copy and Paste (C/C++)
• Using the Delayed Copy and Paste Feature of the Pasteboard
• Clipboard Glossary
• Uploading and Downloading Application Files
• Compressing and Decompressing Files
• Overview of the Word Selection Service
• Developing a Word Selection Extension Ability
• Selection Service Terminology
• Preventing the Idle System from Entering Sleep Mode
• Printing Files (C/C++)
• PrintExtensionAbility
• About This Kit
• Adding App Icons to the Status Bar
• Adding App Icons to the Quick Bar
• Glossary
• About This Kit
• Using Segment Map to Query and Maintain Range Information
• Using RectPartition to Solve the Rectangular Partition Problem
• Using PolyRoot to Solve Polynomial Roots
• Using ConcurrentHashMap to Query and Maintain Key-Value Information in a Multithreaded Environment
• Using DSP for Vector Computation
• Using DSP for Second-Order IIR Filtering
• Using DSP for FFT
• Using HashMap to Manage Key-Value Data
• Using Sort for Generic and Natural Language Sorting
• Using mathPrediction for Mathematical Prediction
• Using perfHint for System Performance Optimization (ArkTS)
• Using perfHint for System Performance Optimization (C/C++)
• Glossary
• About This Kit
• Function Flow Runtime Paradigms
• Function Flow Runtime Serial Queue (C)
• Function Flow Runtime Concurrent Queue (C)
• Function Flow Runtime Task Graph (C)
• Function Flow Runtime Serial Queue (C++)
• Function Flow Runtime Concurrent Queue (C++)
• Function Flow Runtime Task Graph (C++)
• Function Flow Runtime Job Partner (C++)
• Function Flow Runtime Development
• Function Flow Runtime C APIs
• Glossary
• About This Kit
• Input Device Development
• Preferential Response of System Function Keys
• Mouse Pointer Development
• Event Listening Development (C/C++)
• Event Interception Development (C/C++)
• Glossary
• About This Kit
• MDM Kit Development
• App Model
• Multi-App Management
• EnterpriseAdminExtensionAbility Development
• Personal Data Processing Information
• Glossary
• Appendix
• About This Kit
• QoS Development
• Gewu Service Development
• Setting Thread Priorities in High-Load Scenarios
• Glossary
• About This Kit
• Enabling Hotspot Accelerate
• Glossary
• About This Kit
• Device Hardware Consistency Check
• About This Kit
• Development Preparations
• Navigation Hop to Head Unit
• Address Hop to Head Unit
• Hop to Walking Navigation upon Vehicle Exit
• Proactively Obtaining HiCar Connection Status
• Listening to HiCar Connection Status
• Connecting an App on Super Home Screen to the Distributed Camera
• Glossary
• About This Kit
• Setting Up the Environment
• UI-free Driver Development
• UI-based Driver Development
• USB DDK Development
• HID DDK Development
• USB Serial DDK Development
• SCSI Peripheral DDK Development
• FAQs
• Glossary
• About This Kit
• Stationary Development
• Motion Awareness Development
• Device Status Awareness Development
• Metadata Binding Development
• Glossary
• About This Kit
• Integrating the Handwriting Suite
• Integrating Point Prediction
• Integrating Instant Shape
• Integrating the Global Color Picker
• Integrating Stylus Interaction
• Connecting to Stylus Frame Boost
• Integrating the Global Color Picker
• Integrating Point Prediction
• Connecting to Stylus Frame Boost
• Does the Handwriting Suite of Pen Kit Support Custom Brushes?
• Does the Handwriting Suite of Pen Kit Support Custom Brush Widths?
• Does the Handwriting Suite of Pen Kit Support Custom Colors?
• Can the Toolbar of the Handwriting Suite of Pen Kit Be Provided Separately?
• Do I Need to Integrate the Point Prediction Feature of Pen Kit After the Handwriting Suite Has Been Integrated?
• Do I Need to Integrate the Instant Shape Feature of Pen Kit After the Handwriting Suite Has Been Integrated?
• Can I Adjust the Prediction Degree of the Point Prediction Feature of Pen Kit?
• Why Does the Instant Shape Feature Fail to Recognize a Shape?
• About This Kit
• Sensor Overview
• Sensor Development (ArkTS)
• Sensor Development (C/C++)
• Vibrator Overview
• Vibrator Development (ArkTS)
• Vibrator Development (C/C++)
• Glossary
• About This Kit
• Object Tracking Photography Development
• Glossary
• About the Service
• Use Cases
• Applying for Integrating Wear Engine Kit
• Configuring the Client ID
• Querying Connected Wearables
• Requesting User Authorization
• Querying Wearable Device Information
• Selecting a Target Device
• App-to-App Message Communications
• Querying and Subscribing to Status
• Template-based Notifications on Wearables
• Obtaining Wearable Device Sensor Data
• Managing the Connection Status Between Your App and Wear Engine Kit
• Querying Connected Peer Devices
• App-to-App Message Communications
• Debugging and Verification
• If the Project Already Has an App ID, Do I Need to Apply for a New One?
• How Do I Obtain the App Fingerprint?
• Why Is the User Authorization Screen Not Displayed?
• What Can I Do If Error Message "App has not applied for the Wear Engine service" is Reported During an API Call?
• Why Is Data Not Reported Immediately After the HR Sensor Is Enabled?
• Why Is 0 or 255 Reported by the HR Sensor?
• Result code 206 is displayed when the phone is communicating with a lite wearable device
• Why Is Error Code 1008500011 Displayed When a File Is Sent from the Phone-Side App to the Wearable-Side App?
• Submitting a Ticket Online If You Cannot Find the Answer to Your Question
• Personal Data Processing Information
• Glossary
• About This Kit
• Preparations
• Integrating AOD Navigation
• Glossary
• About This Kit
• Overview
• JS Crash (Process Crash) Detection
• C++ Crash (Process Crash) Detection
• Address Sanitizer Detection
• Application Freeze Detection
• Resource Leak Detection
• Task Timeout Detection
• Application Killed Detection
• Page Switch Logs
• Power Detection
• Performance Detection
• Using HiLog (ArkTS)
• Using HiLog (C/C++)
• Introduction to HiAppEvent
• Event Subscription Overview
• Event Subscription (ArkTS)
• Event Subscription (C/C++)
• Crash Event Overview
• Subscribing to Crash Events (ArkTS)
• Subscribing to Crash Events (C/C++)
• Application Freeze Event Overview
• Subscribing to Application Freeze Events (ArkTS)
• Subscribing to Application Freeze Events (C/C++)
• App Freeze Warning Event Overview
• Subscribing to App Freeze Warning Events (ArkTS)
• Subscribing to App Freeze Warning Events (C/C++)
• Resource Leak Event Overview
• Subscribing to Resource Leak Events (ArkTS)
• Subscribing to Resource Leak Events (C/C++)
• Address Sanitizer Event Overview
• Subscribing to Address Sanitizer Events (ArkTS)
• Subscribing to Address Sanitizer Events (C/C++)
• Main Thread Jank Event Overview
• Subscribing to Main Thread Jank Events (ArkTS)
• Subscribing to Main Thread Jank Events (C/C++)
• Task Execution Timeout Event Overview
• Subscribing to Task Execution Timeout Events (ArkTS)
• Subscribing to Task Execution Timeout Events (C/C++)
• Application Killed Event Overview
• Subscribing to Application Killed Events (ArkTS)
• Subscribing to Application Killed Events (C/C++)
• ArkWeb Fling Jank Event Overview
• Subscribing to ArkWeb Fling Jank Events (ArkTS)
• Introduction to Time-Consuming Launch Events
• Subscribing to Time-Consuming Launch Events (ArkTS)
• Subscribing to Time-Consuming Launch Events (C/C++)
• Introduction to Scrolling Frame Loss Events
• Subscribing to Scrolling Frame Loss Events (ArkTS)
• Subscribing to Scrolling Frame Loss Events (C/C++)
• Introduction to High CPU Load Events
• Subscribing to High CPU Load Events (ArkTS)
• Introduction to Battery Usage Statistics Events
• Subscribing to Battery Usage Statistics Events (ArkTS)
• Introduction to Audio Jank Events
• Subscribing to Audio Jank Events (ArkTS)
• Subscribing to Audio Jank Events (C/C++)
• HiAppEvent FAQs
• Using FaultLogExtensionAbility to Subscribe to Events
• Introduction to HiTraceMeter
• Using HiTraceMeter (ArkTS)
• Using HiTraceMeter (C/C++)
• Viewing HiTraceMeter Logs
• Introduction to HiTraceChain
• Using HiTraceChain (ArkTS)
• Using HiTraceChain (C/C++)
• Using HiChecker (ArkTS)
• Introduction to HiDebug
• Using HiDebug APIs (ArkTS)
• Using HiDebug APIs (C/C++)
• Using HiCollie to Detect Service Thread Stuck and Jank Events (C/C++)
• Using HiCollie to Detect Function Execution Timeout Events (C/C++)
• Development of Error Manager
• Development of Application Recovery
• App Gray-scale Data Collection Overview
• Using HiRetrieval for App Gray-Scale Data Collection (ArkTS)
• Glossary
• Personal Data Processing Statement
• About This Kit
• JsUnit User Guide
• UITest User Guide
• PerfTest User Guide
• SmartPerf Device User Guide
• wukong User Guide
• About This Kit
• hdc
• Ability Assistant
• Bundle Manager
• Packing Tool
• Unpacking Tool
• App Check Tool
• Common Event Manager
• Advanced Notification Manager
• Enterprise Device Manager
• restool
• param
• power-shell
• Access Token Manager
• network-cfg
• hilog
• hilogtool
• hidumper
• PrivacyManagerService
• hitrace
• hiperf
• hiprofiler
• uinput
• Toybox
• mediatool
• devicedebug
• rawheap-translator
• js-rawheap-translator
• SourceMap Splitter
• netcopilot
• Binary Sign Tool
• Media Development at a Glance
• Using HDR Vivid in Media Applications
• About This Kit
• Audio Focus and Audio Session Overview
• Introduction to Audio Focus
• Audio Session Management (ArkTS)
• Using OHAudio for Audio Session (C/C++)
• Audio Playback Development
• Choosing the Right Playback Stream Type
• (Recommended) Using OHAudio for Audio Playback (C/C++)
• Using AudioRenderer for Audio Playback (ArkTS)
• Low-Latency Audio Playback (C/C++)
• Low-Power Audio Playback
• Using AudioHaptic for Audio-Haptic Playback (ArkTS)
• Using SoundPlayer for System Sound Effect Playback
• Volume Management
• Spatial Audio Capability Query and Status Subscription
• Audio Playback Stream Management
• Audio Recording Development
• Choosing the Right Recording Stream Type
• (Recommended) Using OHAudio for Audio Recording (C/C++)
• Using AudioCapturer for Audio Recording (ArkTS)
• Low-Latency Audio Recording (C/C++)
• Implementing Background Recording
• System Audio Recording Overview and API Selection
• Implementing System Audio Recording
• Managing Microphone Mute State
• Querying and Listening for the Recording Status of Other Applications
• Recording Concurrency Strategy Description
• Implementing Custom Audio Monitoring
• Implementing Low-Latency Audio Monitoring
• Querying and Listening for Audio Input Devices
• Querying and Listening for Audio Output Devices
• Switching Audio Input Devices
• Switching Audio Output Devices
• Handling Output Device Changes Gracefully
• Audio Call Overview
• Developing Audio Call
• Enhancing Audio Performance Experience
• Audio Workgroup Management
• Audio Creation Overview (C/C++)
• Offline Editing (C/C++)
• Real-Time Preview (C/C++)
• Audio Format Conversion (C/C++)
• Spatial Audio Rendering (C/C++)
• Audio Effects (C/C++)
• OH_MIDI Overview (C/C++)
• Using OH_MIDI for MIDI Development (C/C++)
• Switching from OpenSL ES to OHAudio (C/C++)
• Using OpenSL ES for Audio Playback (C/C++)
• Using OpenSL ES for Audio Recording (C/C++)
• Using Audio Snapshots for Troubleshooting
• Troubleshooting Silent Playback Issues
• Troubleshooting Audio Playback Stuttering and Noise Issues
• Troubleshooting Silent Recording Issues
• Glossary
• About This Kit
• AVCodec Supported Formats
• Obtaining Supported Codecs
• Audio Encoding
• Synchronous Audio Encoding
• Audio Decoding
• Synchronous Audio Decoding
• Video Encoding
• Synchronous Video Encoding
• Temporally Scalable Video Coding
• B-Frame Video Encoding
• Video Encoding Configurations for Typical Scenarios
• ROI Video Encoding
• Encoding with One Input and Dual Outputs
• Encoding with Preprocessing
• Video Decoding
• Synchronous Video Decoding
• Intelligent Smooth High-Speed Playback Decoding
• Video Variable Frame Rate
• Introduction to Audio Vivid Capabilities
• Audio Vivid Demultiplexing
• Audio Vivid Decoding
• Audio Vivid Encoding
• Audio Vivid Playback
• HDR Vivid Video Playback
• HDR Vivid Video Recording
• Converting HDR Vivid to SDR Videos
• Media Data Multiplexing
• Media Data Demultiplexing
• Decoded Video Playback Control in Surface Mode
• A/V Synchronization
• Rendering Video Frames
• HDR Vivid Video Playback and Recording
• HDR Vivid-to-SDR Video Transcoding
• Video Transcoding in Buffer Mode
• Video Encoding in Surface Mode
• Concurrently Creating a Video Decoder and Initializing NativeWindow
• Video Codec Width, Height, Stride, and Crop Information
• About This Kit
• Local AVSession Overview
• AVSession Provider (ArkTS)
• AVSession Provider (C/C++)
• Accessing AVSession
• Background Playback
• Integrating the Lyrics Component
• AVSession Controller
• Switching Call Devices Using Components
• Introduction to Playback Control
• AVCastPicker Development
• Extended Screen Casting Development
• Checklist for Playback Control Access
• Basic Playback Controls
• Quick Playback
• Audio/Video Casting
• Audio Recommendations
• Customizing the Display Layout of Control Buttons in the Media Controller
• Using the Audio Template
• Local Media Session FAQs
• Common FAQs About Distributed Media Sessions
• FAQs About Using AVCastPicker
• FAQs About Using AVCastPickerHelper APIs
• Glossary
• About This Kit
• Requesting Camera Development Permissions
• Camera Device Management (ArkTS)
• Device Input Management (ArkTS)
• Camera Session Management (ArkTS)
• Using the System Camera to Take Photos and Record Videos (CameraPicker)
• Preview (ArkTS)
• Dual-Channel Preview (ArkTS)
• Photo Capture (ArkTS)
• Photo Capture Practices (ArkTS)
• Video Recording (ArkTS)
• Video Recording Practices (ArkTS)
• Metadata (ArkTS)
• Using the Flashlight (ArkTS)
• Adapting Camera Changes in Different Fold States (ArkTS)
• Deferred Photo Delivery (ArkTS)
• Deferred Photo Delivery Practices (ArkTS)
• Moving Photos (ArkTS)
• Basic Camera Animation (ArkTS)
• Using the Camera in the Worker Thread (ArkTS)
• Practices for Camera Recovery from the Background (ArkTS)
• Practices for Automatic Camera Switching (ArkTS)
• White Balance Settings (ArkTS)
• Pressure Management (ArkTS)
• Camera Controller (ArkTS)
• Macro Photography Settings (ArkTS)
• Multi-Camera Concurrent Mode (ArkTS)
• YUV Photo Capture (ArkTS)
• Focus (ArkTS)
• Adjusting Camera Rotation Angles (ArkTS)
• Understanding Camera Rotation Terminology
• Secure Mode Camera (ArkTS)
• Dynamically Adjusting the Preview Frame Rate (ArkTS)
• Using Camera Preconfiguration (ArkTS)
• HDR Vivid Photo Capture (ArkTS)
• HDR Vivid Camera Recording (ArkTS)
• Solution to Screen Artifacts During Camera Preview
• Camera Device Management (C/C++)
• Device Input Management (C/C++)
• Camera Session Management (C/C++)
• Preview (C/C++)
• Secondary Processing of Preview Streams (C/C++)
• Photo Capture (C/C++)
• Photo Capture Practices (C/C++)
• Deferred Photo Delivery (C/C++)
• Video Recording (C/C++)
• Video Recording Practices (C/C++)
• Camera Metadata (C/C++)
• Using the Flashlight (C++)
• Pressure Management (C/C++)
• Macro Photography Settings (C/C++)
• Multi-Camera Concurrent Mode (C/C++)
• YUV Photo Capture (C/C++)
• Focus (C/C++)
• Adjusting Camera Rotation Angles (C/C++)
• Understanding Camera Rotation Terminology
• Dynamically Adjusting the Preview Frame Rate (C/C++)
• Using Camera Preconfiguration (C/C++)
• Camera API Call Sequence Issues
• Camera Preview Stream Startup Issues
• Session Configuration Issues
• Camera Preview Rotation Issues
• White Balance Issues
• Color Space Configuration Issues
• Glossary
• About This Kit
• DRM Development (ArkTS)
• DRM Development (C/C++)
• DRM Playback with AVPlayer (ArkTS)
• DRM Playback with AVCodec (C/C++)
• About This Kit
• Using ImageSource to Decode Images
• Using ImageSource to Decode Pictures
• Image Decoding Memory Optimization (ArkTS)
• Image Region Decoding and Downsampling (ArkTS)
• Using ImageSource to Obtain RAW Data
• Using ImagePacker to Encode Images
• Using ImagePacker to Encode Pictures
• Using PixelMap to Transform Images
• Using PixelMap for PixelMap Operations
• Using VideoProcessingEngine to Upscale Images
• Reading and Editing Image Exif Data
• Reading and Editing Image XMP Metadata
• Using ImageSource to Obtain Specific Metadata
• Using ImageReceiver to Receive Images
• Using Image_NativeModule to Decode Images
• Using Image_NativeModule to Decode Pictures
• Image Decoding Memory Optimization (C/C++)
• Image Region Decoding and Downsampling (C/C++)
• Using Image_NativeModule to Decode Animated Images
• Using Image_NativeModule to Decode HDR Images
• Using Image_NativeModule to Encode Images
• Using Image_NativeModule to Encode Pictures
• Using Image_NativeModule for PixelMap Operations
• Using ImageEffect to Edit Images
• Scaling Images
• Dynamic Metadata Generation for Images
• Color Space Conversion for Images
• Converting HDR Images from Single-Layer to Dual-Layer
• Converting HDR Images from Dual-Layer to Single-Layer
• Using Image_NativeModule to Read and Edit Image Exif Data
• Using Image_NativeModule to Receive Images
• Handling HEIF Images
• Obtaining the Rotation Angle of an Image
• Image Kit Exception Handling
• Common Crash and Error Issues
• Image Decoding
• Image Encoding
• Image Transformation
• PixelMap Operation
• Image Receiving
• Glossary
• About This Kit
• Using AVPlayer to Play Audio (ArkTS)
• Using AVPlayer to Play Videos (ArkTS)
• Using AVPlayer to Set Playback URLs (ArkTS)
• Using AVPlayer to Play Streaming Media (ArkTS)
• Using AVPlayer to Add External Subtitles to Videos (ArkTS)
• Using SoundPool to Play Short Sounds (ArkTS)
• Using AVRecorder to Record Audio (ArkTS)
• Using AVRecorder to Record Videos (ArkTS)
• Using AVScreenCaptureRecorder to Record Screens and Write Them to Files (ArkTS)
• Using AVMetadataExtractor to Extract Audio and Video Metadata (ArkTS)
• Using AVImageGenerator to Extract Video Images at a Specified Time (ArkTS)
• Using AVTranscoder to Transcode Videos (ArkTS)
• Creating an Asynchronous Thread for AVTranscoder Video Transcoding (ArkTS)
• Transcoding FAQs
• Long-Form Video Playback with AVPlayer
• Short-Form Video Playback with AVPlayer
• Embedded Short-Form Video Playback with AVPlayer
• Online Video Playback with AVPlayer
• Minimizing Stuttering in Online Video Playback
• Obtaining Video Thumbnails Using System Capabilities
• Screen Recording Based on AVScreenCapture (ArkTS)
• Using AVPlayer to Play Audio (C/C++)
• Using AVPlayer to Play Videos (C/C++)
• Using AVPlayer to Play Streaming Media (C/C++)
• Using LPP to Play Videos (C/C++)
• Using AVRecorder to Record Audio (C/C++)
• Using AVRecorder to Record Videos (C/C++)
• Using AVScreenCapture in Basic Scenarios
• Using AVScreenCapture in Custom Scenarios
• Screen Capture FAQs
• Using AVScreenCapture to Capture Screens and Write Them to Files (C/C++)
• Using AVScreenCapture to Capture Window-Level Screen (C/C++)
• Capturing the Specified Area on a Screen
• Using AVMetadataExtractor to Obtain Metadata (C/C++)
• Using AVImageGenerator to Obtain Video Frames (C/C++)
• Using AVTranscoder to Transcode Videos (C/C++)
• Video Scaling
• Video Dynamic Metadata Generation
• Video Color Space Conversion
• Screen Recording Based on AVScreenCapture (C/C++)
• Glossary
• About This Kit
• Selecting Media Assets Using Picker
• Saving Media Assets
• Accessing Images/Videos Using PhotoPickerComponent
• Accessing Albums Using AlbumPickerComponent
• Obtaining the Latest Image/Video Using RecentPhotoComponent
• Using PickerController to Replace Original Images with Edited Images
• Recommending Images Using the Photo Picker
• Accessing and Managing Moving Photos
• Playing Moving Photos with MovingPhotoView
• Inheriting Media File Access Permissions After Device Upgrade
• Before You Start
• Managing Media Assets
• Managing User Albums
• Managing System Albums
• Observing Media Assets
• Requesting Media Assets Using MediaAssetManager (C/C++)
• Obtaining and Storing Images
• How to Properly Manage Media Assets
• How to Correctly Identify Media Asset Types
• Geolocation Information Is Missing from Images
• How to Properly Handle High-Resolution Images
• Glossary
• About This Kit
• Setting a Ringtone
• About This Kit
• Getting Started
• Scan-to-Access Capability
• Barcode Scan by Default UI
• Barcode Scanning by Custom UI
• Scanning Barcodes in a Saved Image
• Recognizing Barcodes in Image Data
• Generating a Barcode Image from Text
• Generating a Barcode Image from a Byte Array
• How Do I Add a Quick Entry for the Scan-to-Access Service?
• Failed to Open the Target Page Through Scan-to-Access
• Scan Kit Cannot Recognize Multiple Barcodes at a Time
• Device Types in Uploaded Package Inconsistent with Declared Device Types During Package Upload
• Multi-Barcode Scanning Failed During Gallery-based Barcode Scanning by Default UI
• 1D Code Recognition Failure
• Recognized Coordinate Information of a 1D Code Is Empty
• Scanning Preview Image on Custom UI Stretched
• Black Screen Occurred on the Custom Scanning UI
• How Do I Scan Barcodes Continuously on the Custom Scanning UI?
• Failure to Recognize a Barcode Image Generated from a Byte Array
• How Do I Determine Whether Scanning is Canceled on the Default Scanning UI?
• How Do I Integrate Scan Kit for HTML5
• How Do I Implement Zoom Ratio Change Through Gestures?
• How Do I Implement the Barcode Scanning Box on a Custom UI?
• Experience Design Problem on the Default/Custom Barcode Scanning UI
• How Do I Implement the Retry Mechanism for Barcode Scanning by Custom UI?
• App Occasionally Exits When a User Attempts to Recognize a Barcode from a Saved Image on the Custom Barcode Scanning UI
• How Do I Set the Background Color of a Barcode Image to Transparent?
• Glossary
• Personal Data Processing Information
• About This Kit
• Preparations
• Introduction
• Managing AR Sessions (ArkTS)
• Managing AR Sessions (C/C++)
• Introduction
• Obtaining the Device Pose (ArkTS)
• Obtaining the Device Pose (C/C++)
• Introduction
• Detecting Planes in the Environment (ArkTS)
• Detecting Planes in the Environment (C/C++)
• Introduction
• Placing Objects (ArkTS)
• Placing Objects (C/C++)
• Introduction
• Recognizing Plane Semantics (ArkTS)
• Recognizing Plane Semantics (C/C++)
• Introduction
• Recognizing the Target Shape (C/C++)
• Introduction
• Obtaining Mesh Scanning Information (ArkTS)
• Obtaining Mesh Scanning Information (C/C++)
• Introduction
• Obtaining Depth Estimation Information (ArkTS)
• Obtaining the Depth Image (C/C++)
• Introduction
• High-Precision Geometric Reconstruction (ArkTS)
• High-Precision Geometric Reconstruction (C/C++)
• Introduction
• Human Body Tracking and Skeleton Keypoint Recognition (ArkTS)
• Human Body Tracking and Skeleton Keypoint Recognition (C/C++)
• Introduction
• Face Tracking (ArkTS)
• Face Tracking (C/C++)
• Introduction
• Image Tracking (ArkTS)
• Image Tracking (C/C++)
• Error Message "plane is nullptr!" Is Reported with the Error Code 401 When I Attempt to Obtain the 2D Vertex Coordinate Array of the Detected Plane
• When the Camera Is Blocked for a Period of Time and Then Uncovered, the Output Pose Changes Dramatically
• Unable to Recognize Planes in Scenarios with Reflections, Dim Lights, or Weak Textures (Where There Is Little Color Variation in the Input Images)
• The Plane Drifts or Pose Data Changes Abruptly in Certain Special Scenarios (Such as When a Strong Magnetic Field Is Nearby, the Phone Is Overheated, or When Duplicate Textures Are Scanned)
• Data Type Conversion
• Glossary
• Personal Data Processing Information
• Appendix
• About This Kit
• Introduction to Variable Frame Rates
• Requesting Frame Rates for Animations
• Requesting Frame Rates for UI Components
• Requesting Frame Rates for Custom Content
• Native DisplaySoloist Development (C/C++)
• Overdraw Debugging
• Overview of Graphics Drawing and Display
• Obtaining a Canvas and Displaying Drawing Results (ArkTS)
• Obtaining a Canvas and Displaying Drawing Results (C/C++)
• Canvas Operations and State Processing (ArkTS)
• Canvas Operations and State Processing (C/C++)
• Overview of Drawing Effects
• Basic Drawing Effects (ArkTS)
• Complex Drawing Effects (ArkTS)
• Basic Drawing Effects (C/C++)
• Complex Drawing Effects (C/C++)
• Drawing Primitives
• Drawing Geometric Shapes (ArkTS)
• Drawing Images (ArkTS)
• Drawing TextBlobs (ArkTS)
• Drawing Geometric Shapes (C/C++)
• Drawing Images (C/C++)
• Drawing TextBlobs (C/C++)
• Introduction to Text Development
• Using Theme Fonts (ArkTS)
• Registering and Using Custom Fonts (ArkTS)
• Obtaining and Using System Fonts (ArkTS)
• Using Theme Fonts (C/C++)
• Registering and Using Custom Fonts (C/C++)
• Obtaining and Using System Fonts (C/C++)
• Text Measurement (ArkTS)
• Text Measurement (C/C++)
• Drawing and Displaying Simple Text (ArkTS)
• Drawing and Displaying Complex Text (ArkTS)
• Drawing and Displaying Custom Text (ArkTS)
• Drawing and Displaying Simple Text (C/C++)
• Drawing and Displaying Complex Text (C/C++)
• Drawing and Displaying Custom Text (C/C++)
• Text Development FAQs
• Adding Image Effects (C/C++)
• NativeVSync Development (C/C++)
• NativeBuffer Development (C/C++)
• NativeImage Development (C/C++)
• NativeWindow Development (C/C++)
• GPU/CPU Memory Access Sync (C/C++)
• Common Stability Issues with Graphics Buffers (C/C++)
• Glossary
• About This Kit
• Setting Up and Managing Scenes
• Creating and Using Material Resources
• Creating and Using Image Resources
• Creating and Using Environment Resources
• Requirements on the .shader File Format
• Controlling and Managing Scene Animations
• Downloading and Installing the ArkGraphics Editor Plugin and Editor
• About This Kit
• Overview
• Overview
• OpenGL ES
• Vulkan
• Overview
• OpenGL ES
• Vulkan
• Overview
• OpenGL ES
• Vulkan
• Overview
• OpenGL ES
• Vulkan
• Overview
• Vulkan
• Developing the ABR Capability
• Developing the OpenGTX Capability
• Overview
• Development Preparations
• Extension-Initiated System-Managed Download
• Extension-Initiated Coordinated Download
• Asset Download in the App Foreground
• Asset Download Switching from the System Background to the App Foreground
• Releasing an Asset Download Task
• Viewing Asset Distribution Data
• Development Preparations
• Overview
• Second-level Launch
• Overview
• Implementing Game Pre-launch
• Development Preparations
• Implementing the Game Buddy Service
• What Are the Graphics APIs Supported by the Frame Generation and ABR Capabilities?
• What Types of Devices Does This Kit Support?
• What Are the Possible Causes of Serious Blurring Artifacts on the Edges of Moving Objects After the Extrapolation Mode of Frame Generation Is Enabled?
• What Kinds of Buffers Are Suitable for the ABR Capability?
• What Can I Do if the Rendering Effect of Other Passes Becomes Abnormal After the Buffer Resolution Is Adapted by the ABR Capability?
• What Can I Do if the Native Texture Content Obtained from the Game Engine Is Empty After the ABR Capability Is Integrated?
• What Types of Asset Formats Are Supported for Upload to Huawei CDNs?
• What Can I Do If the Download Functions Do Not Take Effect Because the Component Type Is Not Configured for the Integrated Game Asset Acceleration ExtensionAbility?
• What Can I Do If the Download Functions Do Not Take Effect Because the Network Permission Is Not Configured for the Integrated Game Asset Acceleration ExtensionAbility?
• Why Do the Static Variables Used in Asset Acceleration ExtensionAbility Methods Not Take Effect?
• How Do I Parse XML Files Corresponding to manifestUrl in the Huawei CDN Scenario?
• Can I Only Access the Download ExtensionAbility Without Rewriting the Download Logic or Middleware in the Game Engine?
• How Do I Use a Specified Test Device for Local Testing After Integrating the Asset Background Download Functions?
• Is It Possible to Stop a Released Download Task, for Example, When I Encounter Issues with Assets?
• Can I Apply for a Continuous Task for Seamless Game Running and Asset Download After the App Switches from the Foreground to the Background?
• How Do I Integrate the Asset Background Download Functions If I Use Unity Addressables in My Game?
• How Do I Avoid Full-Screen Incoming Call Notification for My Game Launched by Loading a Memory Snapshot?
• What Can I Do If Vibration Occurs During Scene Switching After a User Swipes Up to Exit the Game?
• What Can I Do If Third-Party SDK Functions Are Abnormal in a Game Launched from a Memory Snapshot?
• What Can I Do If a Black Screen Is Displayed When the Game Calls UnityEngine.Application.Quit to Exit Through a Side Swipe?
• What Can I Do If the Error Message "BusinessError: The Worker instance is not running, maybe worker is terminated when PostMessage" Is Frequently Recorded in Logs?
• What Can I Do to Avoid Game Freezing upon Next Fast Launch if the Game Freezes Previously?
• What Can I Do If an Error Similar to "UIContent is nullptr" Occurs After Second-Level Game Launch, Causing Sign-in and Other Exceptions?
• What Can I Do If My Game Is Rejected for Failing to Implement Anti-addiction Reminders?
• What Can I Do If the Splash Screen and the Resumed Game Audio Are Out of Sync During Second-Level Game Launch?
• What Can I Do If My Game Cannot Perform Hot Updates After Second-Level Game Launch Is Enabled?
• What Should I Do If an Exception Occurs When the Game Launch Acceleration API Is Called on a Tablet Running Tuanjie Engine 1.8.1 to 1.9.0?
• What Should I Do If the Game Screenshot Callback Does Not Return a File Descriptor?
• Glossary
• About This Kit
• Loading a 3DGS Model
• Adding a Filter Effect
• Reconstructing a 3D Scene (C/C++)
• Managing Spatial Recon Kit Sessions
• Glossary
• About This Kit
• Preparations
• GPU Spatial Upscaling
• AI Temporal Upscaling
• AI Spatial Upscaling
• Adaptive VRS
• Subpass Shading
• Ray-Traced Reflections
• Ray-Traced Shadow and Ambient Occlusion
• Ray-Traced Global Illumination
• Control-Display Separation
• High-Performance GPU Sorting
• What Can I Do If an Extension Instance Fails to Be Created?
• Can I Use Upscaling and Adaptive VRS Features at the Same Time?
• Adaptive VRS Depth Attachment Instructions
• Glossary
• About This Kit
• Management Rules for Using the Sign-in Capability of Account Kit
• Requesting Scopes
• Configuring Signing Information and Adding a Fingerprint
• Configuring the Client ID
• Overview
• Signing In with HUAWEI ID Through Just One Tap (Obtaining the Mobile Number, UnionID, and OpenID)
• Signing In with the HUAWEI ID Sign-In Button
• Signing In with a Custom Button
• Silently Signing In
• Signing In After Authorization by QR Code Scanning
• Overview
• Obtaining the Avatar and Nickname
• Obtaining the Mobile Number
• Obtaining the Shipping Address
• Obtaining the Invoice Title
• Overview
• Obtaining a User's Risk Level Through One-Tap HUAWEI ID Sign-in
• Obtaining a User's Risk Level Through Other Ways for HUAWEI ID Sign-in
• Obtaining the Real-Name Age Group
• Overview
• Following the Device's Youth Mode Status
• Enabling the Youth Mode Within an App
• (Recommended) Disabling the App's Youth Mode
• Disabling the Device's Youth Mode
• Adjusting Youth Mode Settings
• Notification Events
• 1001500001 Fingerprint Certificate Verification Failure
• 1001502014 Necessary Scopes Not Requested
• What Should I Do If the Anonymous Mobile Number Cannot Be Obtained in the One-Tap Sign-In Scenario?
• What Should I Do If the Plaintext Mobile Number Cannot Be Obtained in the One-Tap Sign-In Scenario?
• In the One-Tap Sign-In Scenario Where the App Displays the One-Tap Sign-In Screen, What Should the App Proceed If the User Signs Out of the HUAWEI ID or Switches to Another HUAWEI ID on the Device?
• Is the UnionID/OpenID of a HUAWEI ID User or the Mobile Number Used as Their Unique Identifier During One-Tap Sign-In with a HUAWEI ID?
• How to Exchange User Data Between HarmonyOS APK Apps and HarmonyOS NEXT Apps in the One-Tap Sign-In Scenario?
• What Should I Do If the Avatar and Nickname Cannot Be Obtained?
• Formats of OpenID and UnionID
• What Are the Validity Periods of Access Token and Refresh Token?
• What Are the Length Limits of Access Token and Refresh Token?
• When and How Can I Use the ID Token?
• What Can I Do If USB Debugging Is Unavailable After the Youth Mode Is Enabled?
• Upon Receiving a Notification That the Device's Youth Mode Is Enabled, What Actions Should the App Take?
• Integrating One-Tap HUAWEI ID Sign-In Using a Third-Party Development Framework
• 401 Parameter Check Failure
• 60180007 What Should I Do If the Server Cannot Obtain the One-tap Sign-in Mobile Number of a HUAWEI ID Through the Authorization Code?
• 1001502003 Invalid Input Parameter Value
• Glossary
• Personal Data Processing Information
• Supported Countries/Regions
• About This Kit
• Glossary
• Preparations
• Overview
• Banner Ads
• Native Ads
• Rewarded Ads
• Interstitial Ads
• Splash Ads
• Roll Ads
• Real-Time Bidding
• Why Is a White Screen Displayed When an Ad Is Displayed?
• What Are the Restrictions on Petal Publisher Center?
• Why Is Error Code 801 Returned When a PC Requests or Displays an Ad?
• OAID Service
• Personal Data Processing Information
• About This Kit
• Overview
• Integration Process
• Enabling Relevant Services and Setting Parameters
• Configuring an App
• About Digital Products
• Configuring Digital Products in AppGallery Connect
• Configuring Digital Products Through the Server API
• Displaying Digital Products
• Purchasing Digital Products
• Delivering Digital Products
• Testing the Digital Product Service
• Adding an Atomic Service Widget to the Home Screen
• Displaying the App Details Page
• Adding a Shortcut to the Home Screen
• Querying an App Shortcut
• Deleting an App Shortcut
• On-Demand Feature Distribution (ArkTS)
• On-Demand Feature Distribution (C/C++)
• Ecosystem Query Service
• Update on AppGallery
• Development Overview
• Registering an Enterprise Account
• Managing Attribution Roles
• Standard Conversion Events
• Custom Conversion Events
• Managing Attribution Policies
• Registering Attribution Sources and Conversion Events
• Posting Back the Attribution Result
• Performing Debugging
• Privacy Agreement Management Service
• Dynamically Managing App Icons Through AppGallery Connect
• Dynamically Switching App Icons
• App Review Service
• Can I Configure Multiple Callback URLs for Key Subscription Events in AppGallery Connect?
• What Is the Maximum Length of the IAP Public Key Obtained in AppGallery Connect? Is There a Recommended Length?
• I Try Adding a Product on the Product Management Page in AppGallery Connect, and See a Default Price When Setting My Product Price. What Is the Default Price Used for?
• If I Manually Change an In-App Product's Price for a Specific Country/Region in AppGallery Connect, Will It Still Adjust with Future Exchange Rate Changes?
• Has AppGallery Connect Made Any Numerical Adjustments to the Price Displayed on the Product Management Page, for Example, Changing the Second Decimal Place of a Price to 6 or 9 According to Relevant Rules?
• Is the SHA-256 Certificate Mandatory for Signature Verification?
• Can Signature Verification Be Performed Entirely on the Server Side?
• Is There Only One UI Design for the Payment Screen?
• Can the ID of a Deleted Product Be Used Again for a New Product?
• How Many Certificates Are Supported by the Digital Product Server?
• What Cipher Suites Are Supported by the Digital Product Server?
• What Order Statuses Are Supported by the Digital Product Service?
• What Are the Rules for Renewal Periods of a Subscription?
• Does a One-Month Subscription Renewal Period Refer to 30 Days, 31 Days, or a Calendar Month? Similarly, How Many Days Are Included in Two Months and Three Months?
• Does February Have 28 or 29 Days When the Subscription Period Is Calculated by Calendar Month?
• Why Does an Atomic Service Widget Fail to Be Displayed on AppGallery?
• Why Do the Dynamic Modules Fail to Be Loaded in the On-Demand Loading Scenario?
• Can the Module Loaded on Demand Be Released or Updated on AppGallery Separately?
• If the App Restarts After a Module Is Loaded, Does the Module Remain Loaded? Is It Necessary to Re-initiate an On-Demand Loading Request?
• In the On-Demand Loading Scenario, Can a User Uninstall a Specified Module That Has Been Loaded and Initiate a Request Again?
• Is Synchronous Loading of Dependencies Supported in On-Demand Loading Scenarios?
• Does the On-Demand Loading Scenario Support Multiple Tasks at the Same Time?
• If an App Is Updated on AppGallery After On-Demand Loading Succeeds, Does On-Demand Loading Need to Be Triggered Again?
• Why Does Redirection to a Dynamic Module Page Fail After On-Demand Loading Succeeds?
• How Can I Quickly Debug the On-Demand Feature Distribution Function in My App When It Has Not Been Released on AppGallery?
• Why Is the Scene Value Obtained Through the Ecosystem Query Service Empty?
• Why Does the Update on AppGallery Feature Throw an Exception Indicating that the App Is Not Running in the Foreground?
• Can I Customize the Content in the App Update Pop-up Displayed to Users?
• Why Does an Identity Verification Error Occur When I Call the Attribution Source Registration API of the App Attribution Service?
• How Do I Obtain Logs of the App Attribution Service Through Filtering?
• How Do I Filter Logs Recording the Addition of App Shortcuts to the Home Screen?
• What Can I Do If Error Code 401 Is Returned When an App Shortcut Is Added to the Home Screen?
• Standard Conversion Events and App Attribution Signatures
• Supported Countries/Regions
• Scene Values
• Glossary
• About This Kit
• Making Preparations
• Enabling App Linking
• Starting an App Using the App Link Capability of App Linking
• Redirecting to an App Download Page Through Direct Access to AppGallery
• Redirecting to an App Details Page Using the Deferred Link Capability
• Redirecting to an App in a Specified Way Using the Cross-Platform Link Capability
• Glossary
• About This Kit
• Calendar Management
• Event Management
• Registering and Managing One-Tap Services for Calendar Events
• Calendar Service Best Practices
• About This Kit
• Preparations
• Incoming Call
• Outgoing Call
• Displaying Enterprise Contact Information on the Incoming or Outgoing Call Screen
• Displaying Enterprise Service Information on the Incoming or Outgoing Call Screen
• Redirecting to the Unknown Number and Information Identification Page
• Why Is the Notification Banner Not Displayed?
• Why Is the Profile Picture Not Displayed in the Notification Banner?
• About This Kit
• Making Preparations
• Enabling Cloud Functions
• Enabling Cloud DB
• Enabling Cloud Storage
• Node.js
• Creating a Function
• Testing a Function
• Calling a Function
• Adding an Object Type
• Adding a Cloud DB Zone
• Importing an Object Type File
• Initializing Database Access
• Querying Data
• Writing Data
• Deleting Data
• Setting Configuration Items of Cloud Storage
• Initializing the Global App Context
• Initializing a Storage Instance
• Uploading a Specified File to the Cloud
• Downloading a File from the Cloud to a Local Path
• Obtaining the Download URL of a Cloud File
• Deleting a Cloud File
• Obtaining the Cloud File List
• Obtaining Metadata of a Cloud File
• Setting Metadata of a Cloud File
• Debugging on the Emulator
• Why Is "404:Product does not exist" Displayed When a File Fails to Be Uploaded Using Cloud Storage?
• Why Does the App Log Display ""state":65" and the Upload Process Log Display "403 Forbidden" When a File Fails to Be Uploaded Using Cloud Storage?
• What Can I Do If an API of Cloud Storage Fails to Be Called, the App Log Displays ""state":65", and the Upload Process Log Displays "404 Not Found"?
• Glossary
• Personal Data Processing Information
• Supported Countries/Regions
• About This Kit
• Using the Picker for Contact Management
• About This Kit
• Preparations
• File Exfiltration Control
• Workspace Management
• Workspace Configuration
• Subscribing to Workspace Events
• Process Access Restriction
• Deep Freeze Policy
• Enterprise Account Authentication
• Cross-Workspace Message Notification
• FAQs
• Glossary
• About This Kit
• Moving a File to the Recycle Bin
• Obtaining a File Icon
• Parsing a File Shortcut
• Glossary
• About This Kit
• Listening for Device Online/Offline Events (C/C++)
• Listening for Gamepad Axis and Button Events (C/C++)
• Glossary
• About This Kit
• Overview
• Overview
• (Mandatory) Sign-In with a HUAWEI ID
• Sign-In with an Official Game Account
• Standalone Game Sign-In
• Pre-release Check
• Overview
• Preparations
• (Mandatory) Mini Game Sign-In
• Payment in Mini Games
• Glossary
• Overview
• Preparations
• Development Procedure (ArkTS)
• Development Procedure (C/C++)
• Glossary
• Overview
• Preparations
• Transferring Resource Packages
• Transferring Installation Packages
• Glossary
• Personal Data Processing Information
• Can I Skip App ID Mapping If My Game Does Not Have a Package for HarmonyOS 4 and Earlier?
• What Is the Size Limit for Official Game Account Icons?
• How Do I Hide the Official Account Sign-In Option on the Game Sign-In Screen?
• What Should a Player Do If They Choose an Incorrect Sign-In Account?
• Can I Integrate Game Scene Perception into Games Developed Through C# Programming?
• Configuring a Callback Address
• Obtaining the Game Key
• About This Kit
• Integration Process
• Qualification Requirements for Developers
• Open Data Overview
• Applying for Health Service Kit
• Configuring the Client ID
• Launching HUAWEI Health for Users to Agree to the Privacy Statement
• Managing User Authorization
• Managing Data Sources
• Health and Fitness Sample Data
• Workout Records
• Health Records
• Real-Time Activity Rings Data
• Manually Synchronizing Data
• Managing User Authorization
• Reading Health and Fitness Sample Data
• Reading Workout Records
• Reading Health Records
• Real-Time Activity Rings Data
• Managing User Authorization
• Managing Workout Linkage
• Overview
• Permission Description
• Daily Activities
• Heart Rate
• SpO2
• Stress
• Body Temperature
• Blood Pressure
• Weight
• Height
• Emotion
• Heart Rate Variability
• Overview
• Running
• Walking
• Cycling
• Jump Rope
• Expedition
• Basketball
• Skiing
• Apnea Testing in Diving
• Apnea Training in Diving
• Diving
• Elliptical Machine
• Golf
• Mountain Hiking
• Swimming
• Rowing Machine
• Others
• Sleep
• Menstrual Cycle
• Applying for Formal Scopes
• FAQs About Health Service Kit
• Glossary
• Personal Data Processing Information
• Specifications for Using Logos
• About This Kit
• Requirements and Restrictions on IAP Kit Integration
• (Optional) Using the IAP Kit Integration Skill
• Getting Started
• Enabling Merchant Service
• Creating a Project and App
• Enabling and Activating IAP Kit
• (Optional) Requesting the Embedded Checkout Open Capability
• (Optional) Setting Necessary Parameters
• Configuring Products
• Configuring Signing Information
• Configuring App Identity Information
• Implementing the Purchase Process
• Delivering a Consumable/Non-consumable Product
• Understanding Auto-renewable Subscriptions
• Implementing the Purchase Process
• Delivering an Auto-renewable Subscription Product
• Implementing the Purchase Process
• Delivering a Non-renewable Subscription Product
• Sandbox Testing
• Benefit Analysis and Reports
• Refunding
• Issuing an Invoice
• Can I Set Multiple Addresses for Receiving Key Events in AppGallery Connect?
• What Is the Maximum Length of the IAP Public Key Obtained in AppGallery Connect? Is There a Recommended Length?
• I Try Adding a Product on the Product Management Page in AppGallery Connect, and See a Default Price When Setting My Product Price. What's the Default Price Used for?
• If the Price of an In-App Product in a Country/Region Is Changed in AppGallery Connect, Will the Price Be Affected When the Exchange Rate Changes Later?
• Has AppGallery Connect Made Any Numerical Adjustments to the Price Display on the Product Management Page? For Example, Has It Adjusted the Second Decimal Place to 6 or 9?
• Is the SHA-256 Certificate Mandatory for Signature Verification?
• Can Signature Verification Be Performed Entirely on the Server Side?
• Can the ID of a Deleted Product Be Used Again for a New Product?
• What Certificates Are Supported by the Huawei IAP Server?
• What Cipher Suites Are Supported by the Huawei IAP Server?
• How Do I Fix the Error of an Incomplete Certificate Chain?
• When an App Calls createPurchase to Launch the IAP Kit's Checkout Screen from a Child Window, the Child Window Will Be Hidden. Is This Normal?
• Why Am I Asked for Real Payment When Testing in the Sandbox Environment?
• Can I Use the Same API Key for a HarmonyOS Atomic Service and a HarmonyOS App?
• What Are the Maximum Lengths of purchaseToken and purchaseOrderId?
• What Are subGroupId (Subscription Group ID), subGroupGenerationId (Subscription Group Generation ID), and subscriptionId (Subscription ID)?
• How to Handle and Use developerPayload?
• How to Troubleshoot JWT Signature Verification Failures After App Migration?
• How to Calculate the Validity Period for New Subscriptions upon Immediate Switch of Auto-Renewable Subscriptions?
• Glossary
• Global Coverage of IAP Kit
• About This Kit
• Live View Design Specifications
• Basic Preparations
• Enabling Push Kit
• Setting the Data Processing Location
• Enabling Live View Kit
• Performing Debugging
• Applying for the Formal Permission on Live View Kit
• Precautions
• Creating a Local Live View
• Updating a Live View Through Push Kit
• Frequency Control for Live View Updates
• Third-Party Development Framework Access
• Live View Lifecycle
• Live View Template Use
• Restrictions on the Number of Live Views
• Glossary
• Introduction to Location Kit
• Applying for Location Permissions
• Obtaining Device Location Information (ArkTS)
• Obtaining Device Location Information (C/C++)
• Geocoding and Reverse Geocoding
• Geofence Development
• Introduction to Geofencing
• On-Device GNSS Geofence Development
• Personal Data Processing Statement
• Samples
• Appendix
• About This Kit
• Preparations
• Displaying a Map
• Changing the Map Type
• Showing My Location
• Displaying a Custom Map
• Control Interaction
• Gesture Interaction
• Event Interaction
• Map Location Change
• Map Screenshot
• Marker
• MapPolyline
• Signal Line
• MapArc
• MapPolygon
• MapCircle
• PointAnnotation
• Bubble
• ClusterOverlay
• ImageOverlay
• BuildingOverlay
• TraceOverlay
• Setting the Layering Order of Map Elements
• TileOverlay
• Heatmap
• MvtOverlay
• FlowFieldOverlay
• MassPointOverlay
• POI Search
• Geocoding
• Travel Route Planning
• Batch Route Computation
• Trajectory-based Road Snapping
• Static Map
• Place Details Display
• Location Selection
• Administrative Division Selection
• Navigation and Other Capabilities Provided by the Map App
• Offline Map
• Coordinate Rectification
• Distance Calculation
• Map Not Displayed
• How to Obtain siteId?
• Gestures Freeze or Do Not Work
• Configuring the Persistent Display of the Map Logo
• Effective Scope of Scenario-based Controls' language Parameter
• Personal Data Processing Information
• Preparations Before Release - Obtaining the Map Service Agreement and Qualification Certificate
• Map Data Copyright Statement
• Supported Languages
• Supported Countries/Regions
• Glossary
• About This Kit
• Requesting Notification Authorization
• Managing the Notification Badge
• Managing Notification Slots
• Publishing a Text Notification
• Publishing a Progress Notification
• Adding a Custom Ringtone to a Notification
• Adding a WantAgent Object to a Notification
• Updating a Notification
• Canceling a Notification
• Cross-Device Notification Overview
• Clearing Repeated Notifications Across Devices
• Introduction to NotificationSubscriberExtensionAbility
• Developing the ExtensionAbility for Notification Subscription
• Glossary
• Applying for Priority Notification Entitlement
• Developing a Shortcut to In-App Notification Settings
• About This Kit
• Integration Specifications
• Skill Integration Description
• Checkout Screen Design Specifications
• Registering a Merchant and Obtaining the Merchant ID
• (Optional) Configuration in Specific Scenarios
• Enabling Payment Kit
• Binding a Merchant ID to an App ID
• Preparing the Certificates
• On-Device App Configuration
• Cloud Service Preparation
• (Optional) Preparing for e-CNY Payment Integration
• (Optional) Preparing for Integrating the User Identity Verification Service
• Basic Payment Scenario
• Combined Payment for Platform Merchants
• PIN-free Payment Description
• Payment with Contract Signing Scenario
• Contracted Auto-Debit Scenario
• e-CNY Payment Scenario
• Service Rule Description
• Mixed Payment Scenario
• External Payment Scenario
• Based on URL Redirection
• Based on the API
• Third-Party Payment Troubleshooting
• Scenario of Guiding Users to Bind Cards
• Real-Name Information Verification/Authorization Scenario
• Face-based Identity Verification Scenario
• Viewing Call Records of the Identity Verification Service
• Sandbox Environment Verification
• Merchant Coupon Scenario
• Coupon Claiming Scenario
• Coupon Selection Scenario
• Glossary
• Service and Support
• In Which Scenarios Are Request Parameter Signing and Result Signature Verification Used During Integration Development?
• How Can I Obtain the Public/Private Key Pair for Signing of Payment Kit?
• Who Is the bodySign of a GET Request Signed For?
• What Should I Do If the Checkout Screen Does Not Respond or An Error Is Reported?
• Why Is No Callback Received After Successful Payment?
• Will Multiple Signed Contracts Be Generated If a User Signs a Contract Repeatedly?
• Where Can the PIN-free Payment Contract Signed in Huawei Pay Be Terminated?
• Why Is SHA256 Used for Signature Verification of the Pre-Ordering Request, But SM2 Is Used for Signature Verification of the Payment Callback? Can Only SM2 Be Used for Signature Verification?
• What Should I Do If an Error Indicating Invalid Signature Is Reported in the API Response?
• What Should I Do If the Checkout Screen Displays an Error Message Indicating Service Unavailability and Asking Me to Try Again Later?
• What Should I Do If an Error Indicating Abnormal Transaction Order Status Is Reported for the Pre-ordering Request?
• Can prepayId Be Queried Through an API If the Payment Is Made in a Period of Time After Pre-ordering?
• Can the callbackUrl Parameter in Some APIs that Provide Notification Callback Be Customized? Can a Merchant Customize the Callback Notification Packet?
• What Can I Do If Multiple Callback Notifications Are Received for the Same Payment Request?
• Does the Callback Notification API Provided by the Merchant Need to Be Added to the Network Trustlist in the Payment Kit Production Environment? How Do I Verify That the Provided Callback URL Can Be Properly Accessed by the Payment Kit Server?
• Why Does the Payment Callback Contain the Marketing Information When the Merchant Does Not Pass the Marketing Information?
• Can the Same Merchant ID, Certificate, Key, and Other Input Parameters Except for appId Be Used for the App and Atomic Service APIs?
• Is There an Environment for Jointly Debugging the Access of Registered Merchants?
• What Is the Relationship Between callerId in the Request Header PayMercAuth and mercNo or combineMercNo in the Request Body?
• Will the Signature Be Verified for API Request If the bodySign Field in the Request Header PayMercAuth Is Empty? Or, Will the Field Be Verified First?
• Why Is 000000 Returned and Refund Amount Not Received When a Refund Request Is Initiated Repeatedly with the Same Merchant Order ID?
• In Addition to the Refund API in the Integration Guide, Is There Any Financial Platform Available for Refund Operations in Payment Kit? Can Refund Be Requested on Such a Platform?
• What Format Should Be Used to Parse the Date After a Bill File Is Downloaded?
• What Should I Do If an Error Is Reported During Checkout, Indicating App Information Verification Failure and Asking Me to Contact the Merchant?
• Why Is an Entity Inconsistency Message Displayed When a Merchant ID Is Bound to an App ID?
• How Can I Contact the Operating Organization or Handling Service Organization to Obtain the Development Guide?
• What Should I Do If I Cannot Find the Payment Kit (Non-Virtual) Menu or the App ID Association Authorization Screen?
• About This Kit
• Opening and Saving a PDF Document
• Adding and Deleting PDF Pages
• Text, Images, and Annotations on PDF Pages
• Converting a Specified Page or Area to an Image
• Converting a PDF Document to Images
• Checking Whether the PDF Document Is Encrypted and Removing the Security Lock
• Adding and Deleting Bookmarks
• Adding and Deleting Headers and Footers
• Adding and Deleting Watermarks
• Adding and Deleting Backgrounds
• Previewing a PDF Document
• Opening and Saving a PDF Document
• Setting the PDF Document Preview Effects
• Searching for Keywords
• Highlighting a PDF Document
• Annotations
• Converting a PDF Thumbnail into an Image
• Optimizing the PDF Document Switching Experience
• Can I remove the header, footer, watermark, and background from a specific page using PDF Kit?
• Can I Preview PDF Documents Online?
• About This Kit
• File Preview
• File Open Boost (C/C++)
• File Open Boost Status Awareness (Deprecated)
• File Cache Boost (C/C++)
• Failed to Open a File Preview via the openPreview API
• Preview Fails When the URI Obtained by DocumentViewPicker Is Opened Through the openPreview API
• Glossary
• About This Kit
• Getting Started
• Integration Specifications
• Enabling Push Kit
• Applying for Scenario-Specific Message Permissions
• Obtaining a Push Token
• Sending a Notification Message
• Recalling a Notification Message
• Pushing a Badge Update Message
• Pushing a Widget Update Message
• Sending a Text-to-Speech Message
• Recalling a Text-to-Speech Message
• Pushing a Background Message
• Pushing a Live View Message
• Pushing an In-App Call Message
• Overview
• Generating a JWT Based on a Service Account
• Pushing Scenario-Specific Messages
• (Optional) Developing the Message Receipt
• (Optional) Viewing the Push Report
• (Optional) Analyzing Test Messages
• Obtaining an AAID
• How Do I Handle Problems When Pushing Messages?
• Why Does the Target Device Fail to Receive a Push Message After the Push API Is Successfully Called on the Cloud?
• Incorrect Classification or Categorization
• Push Message Upper Limit Reached
• Message Frequency Control Problems
• In-App Call Message Service Error Upon First Screen Lock After the Device Is Restarted
• Incoming Call Banner Error of an In-App Call Message
• Request URL Version Problem in a Scenario-Specific Message
• How Does My App Client Receive and Display Messages While Running in the Background?
• What Types of Scenario-Specific Messages Should I Choose If I Want to Implement Instant Messaging?
• Pricing of the Kit
• How Can I Replace the Certificate of My Message Receipt Server?
• Personal Data Processing Information
• Glossary
• Notification Content Management Rules
• Push Notification Violation Penalty Criteria
• Supported Countries/Regions
• About This Kit
• Obtaining Book Information
• Obtaining the Catalog Item List
• Building a Reader
• Customizing the Font
• Customizing the Page Background
• Changing the Page-Turning Mode, Font Size, and Line Height
• Adapting the Dark and Light Modes
• Listening to Text Scaling Factor Value Changes
• Manually Triggering Page Turning
• Notifying the Reading Progress
• About This Kit
• Development Preparations
• Mobile Number Quick Verification Button
• Avatar Selection Button
• App Launch Button
• Shipping Address Selection Button
• Invoice Title Selection Button
• Map Location Selection Button
• Permission Settings Button
• Mobile Number and Risk Level Retrieval Button
• Province/City/District Selector Input Component
• Obtaining System Information Attributes by API Calls
• Obtaining System Information Attributes by API Calls in Asynchronous Mode
• Obtaining System Setting Attributes by API Calls
• Displaying the Follow Component by API Calls
• File Path Conversion API
• Introduction to SmartFill
• Typical Scenarios
• Changing the Value of ContentType Dynamically
• Auto-filling Address Information in a Form
• License Plate Number Filling Suggestion
• Data Sources and Logic of Suggestions
• ContentType Use Scenarios
• Supporting SmartFill for HTML5
• Supporting SmartFill for HTML5 Within React Native
• Supporting SmartFill for HTML5 Within Flutter
• Supporting SmartFill for HTML5 Within Taro
• Supporting SmartFill for HTML5 Within Weex
• Supporting SmartFill for HTML5 Within mPaas
• Mapping Between HTML5/Third-Party Framework Configuration Items and HarmonyOS Configuration Items
• Glossary
• Page Cannot Be Opened When the Quick Mobile Number Verification Button Is Tapped
• Failure to Launch a Third-Party App
• SmartFill Selection Box Blocked by the Clipboard Paste Box
• Personal Data Processing Information
• Supported Country/Region
• About This Kit
• Configuring Signing Information
• Requesting a Restricted ACL Permission
• Overview
• Requesting User Authorization
• Revoking User Authorization
• Triggering Callbacks When the App Authorization Switch Is Toggled On or Off on the Authorization List Page of Digital Balance
• Overview
• Starting the App Selection Page
• Launching the Permitted App Redirect Page
• Overview
• Adding a Strategy
• Updating a Strategy
• Queries Strategy Configuration Data
• Starting a Strategy
• Stopping a Strategy
• Querying Strategy Execution Data
• Deleting a Strategy
• Overview
• Setting App Access Restrictions
• Removing App Access Restrictions
• Redirecting from the Intercept Page to the Screen Time Guard App
• Glossary
• About This Kit
• Share Kit Terms
• Precise UTD Type Required for the Host App to Initiate Content Sharing
• One-Step Access to Received Data on the Target Device
• Overview
• Integration Modes for Host Apps
• Initiating Content Sharing Through the Sharing Panel
• Configuring the Target App List (Available Only to Enterprise Apps)
• Customizing the Operation Area
• Obtaining the Sharing Result
• Processing the Shared Content Inside a Target App
• Processing the Shared Content on the Sharing Details Page
• Closing the Sharing Panel from the Sharing Details Page
• Checking Whether an App Is Started by System Share
• Sharing Contact Information to the Recommendation Area
• Target App Design Specifications
• Sharing Links
• Sharing Images
• Sharing Videos
• Sharing Text
• Overview
• Sharing Content
• Inviting a User to Join a Team
• Overview
• Sharing Content to a Specified In-app Page
• Sharing Content Between a Phone and a PC/2-in-1 Device or Tablet
• Overview
• Enabling Grab & Drop on a Device
• Transfer Between Trusted Devices
• Sharing a Link of App Linking to Go to a Specified In-app Page
• Failed to Start the System Sharing Panel
• Unsupported Shared Data Type
• Message "The file you selected cannot be shared." Displayed During Sharing
• About This Kit
• Applying for Wallet Kit
• Overview
• Preparations on the HUAWEI Wallet Server
• Enabling a Car Key
• Controlling a Car
• Overview
• Preparations on Your Server
• Activating a Transportation Card
• Topping Up a Transportation Card
• Updating a Transportation Card
• Deleting a Transportation Card
• Do I Have to Integrate Account Kit into My App in Order to Use Wallet Kit?
• What Will Happen If a User Attempts to Add a Pass to HUAWEI Wallet Without Signing in Using a HUAWEI ID?
• Which Is the Most Commonly Used Access Method?
• What Operations Are Performed by My Server When a Pass Is Added?
• How Can I View an Added Pass?
• Why Is Only One Pass Displayed in HUAWEI Wallet After a User Claims Multiple Passes from the Same Merchant?
• Which Information Will Be Deleted When a User Deletes a Pass?
• About This Kit
• Getting Started
• Obtaining Weather Data
• How to Obtain the Weather Data of a Specified City
• Do Weather Service Kit APIs Support the Positioning Function
• No Data Returned After Minute-Level Precipitation Forecast/Weather Alert/Tide Data Is Requested
• Personal Data Processing Information
• About This Kit
• Starting an Agent Through a Function Component
• Implementing A2A Protocol Communication via AgentAbilityExtension
• Glossary
• About This Kit
• Preparations
• Model Zoo
• Overview
• Non-Training Quantization
• Plugin-based Quantization
• One-Stop Quantization for LLMs
• Plugin-based Quantization
• LoRA Fine-Tuning on a Quantized Base Model
• NAS Training
• Model Size Reduction Example
• FAQs
• Model Benefits
• Preparing for Model Conversion
• Model Conversion Example
• OMG Parameters
• Overview
• AIPP Parameters
• AIPP Configuration File Used for Model Conversion
• Variable data_type
• Deployment Process
• Model Inference
• AIPP Deployment
• Heterogeneity
• Maintenance, Testing, and Optimization
• Zero Memory Copy
• In-Depth Fusion
• Creating a Project
• Configuring NAPI for Your Project
• Model Integration
• Single-Operator Application
• Introduction to Ascend C
• Environment Setup
• Quick Start
• Basic Architecture
• Compute Units
• Storage Unit
• Control Units
• SPMD Model
• Kernel Function
• Hardware Architecture Abstraction
• Programming Paradigm
• API Overview
• Basic APIs
• High-Level APIs
• Overview of Operator Implementation
• Vector Programming
• Basic Knowledge
• Matrix Programming Operator Implementation
• Overview of Project-based Operator Development
• Creating an Operator Project
• Operator Prototype Definition and Implementation
• Operator Implementation on the Kernel
• Tiling Implementation on the Host
• Operator Project Build
• Installing the Operator Package
• Operator Debugging Overview
• Preparing Input Data and Golden Data
• Obtaining the Operator JSON Configuration Template
• Configuring the Operator JSON File with Fixed Input/Output Order
• Configuring the Operator JSON File with Normalized params
• Tiling Debugging
• CPU Twin Debugging
• Simulator
• printf/PRINTF
• DumpTensor
• DumpAccChkPoint
• Assert
• GDB Debugging
• Overview of Operator Graph Integration
• Development Process
• Graph Build and Execution
• Overview of AI Framework Operator Adaptation
• ONNX Framework
• Basic Tensor Concepts
• Data Layout Formats
• How to Use Double Buffer to Optimize Performance
• How to Allocate Workspace as Temporary Memory
• How to Update a Project to the Latest Version
• Parameter Description for the Operator Project Creation Tool
• Data Generation Script Adaptation Example
• Examples of the Operator JSON Configuration File
• Example of the Accuracy Comparison Result
• In-Place Operator Debugging Example
• Parameter Description for the ascendebug Debugging Tool
• Operator Development FAQs
• Ascend C API List
• General Restrictions
• LocalTensor
• GlobalTensor
• ShapeInfo
• UnaryRepeatParams
• BinaryRepeatParams
• ScalarGetCountOfValue
• ScalarCountLeadingZero
• ScalarCast
• CountBitsCntSameAsSignBit
• ScalarGetSFFValue
• Exp
• Ln
• Abs
• Reciprocal
• Sqrt
• Rsqrt
• Not
• Relu
• More Examples
• Add
• Sub
• Mul
• Div
• Max
• Min
• And
• Or
• More Examples
• Adds
• Muls
• Maxs
• Mins
• ShiftLeft
• ShiftRight
• LeakyRelu
• More Examples
• Axpy
• More Examples
• Precision Conversion Instructions
• Transpose
• TransDataTo5HD
• Duplicate
• CreateVecIndex
• Data Distribution and Collection
• Common Data Movement
• Real-Time Format Conversion
• DataCopyPad
• Constructor
• InitBuffer
• Init
• Destroy
• Reset
• AllocEventID
• ReleaseEventID
• FetchEventID
• GetBaseAddr
• InitBufPool
• GetTPipePtr
• Overview
• Constructor
• InitBufPool
• InitBuffer
• Reset
• Overview
• AllocTensor
• FreeTensor
• EnQue
• DeQue
• VacantInQue
• HasTensorInQue
• GetTensorCountInQue
• HasIdleBuffer
• FreeAllEvent
• Overview
• Constructor
• AllocTensor
• FreeTensor
• EnQue
• DeQue
• VacantInQue
• HasTensorInQue
• GetTensorCountInQue
• HasIdleBuffer
• FreeAllEvent
• Overview
• Constructor
• Get
• GetWithOffset
• GetSysWorkSpacePtr
• SetSysWorkSpace
• GetUserWorkspace
• PipeBarrier(ISASI)
• TPosition
• GetBlockNum
• GetBlockIdx
• DumpTensor
• printf
• assert
• DumpAccChkPoint
• Trap
• GET_TILING_DATA
• GET_TILING_DATA_WITH_STRUCT
• TILING_KEY_IS
• Usage Description
• Matmul Template Parameters
• MatmulConfig
• Init
• SetTensorA
• SetTensorB
• Iterate
• GetTensorC
• IterateAll
• End
• Usage Description
• Constructor
• TCubeTiling Structure
• Tanh
• SoftmaxFlashV2
• Sigmoid
• Data Filling
• Prototype Registration API (OP_ADD)
• Input
• Output
• Attr
• SetInferShape
• SetInferDataType
• AICore
• ParamType
• DataType
• Format
• ValueDepend
• Follow
• OpAttrDef
• SetTiling
• AddConfig
• TilingData Structure Definition
• TilingData Structure Registration
• Overview
• GetCoreNum
• GetSocVersion
• GetCoreNumAic
• GetCoreNumAiv
• CalcTschBlockDim
• GetCoreMemSize
• GetCoreMemBw
• GetLibApiWorkSpaceSize
• Internal Associated APIs
• GmAlloc
• GmFree
• ICPU_RUN_KF
• ICPU_SET_TILING_KEY
• Basic Data Structures and API List
• Overview
• Constructor
• GetInstanceNum
• GetInstanceStart
• SetInstanceStart
• SetInstantiationNum
• Constructor
• GetDataType
• GetFormat
• GetOriginFormat
• GetStorageFormat
• GetExpandDimsType
• SetDataType
• SetStorageFormat
• SetOriginFormat
• SetExpandDimsType
• Overview
• Constructor
• GetNodeType
• GetNodeName
• GetIrInputsNum
• GetInputsNum
• GetOutputsNum
• GetIrOutputsNum
• GetInputInstanceInfo
• GetOutputInstanceInfo
• GetInputTdInfo
• GetOutputTdInfo
• GetAttrs
• MutableInputInstanceInfo
• MutableOutputInstanceInfo
• MutableInputTdInfo
• MutableOutputTdInfo
• MutableAttrs
• SetNodeType
• SetNodeName
• Init
• CalcSize
• Overview
• Init
• Add
• Get
• GetSize
• GetOverHeadLength
• Overview
• Create
• Init
• GetSize
• SetSize
• GetCapacity
• GetData
• MutableData
• Overview
• Constructor
• operator==
• GetFullSize
• SetExpandIndex
• IsExpandIndex
• Expand (Outputting a New Shape)
• Expand (Changing the Original Shape)
• GetInputDesc
• GetOutputDesc
• GetOptionalInputDesc
• GetDynamicInputDesc
• GetRequiredInputDesc
• GetIrInputInstanceInfo
• GetIrOutputInstanceInfo
• GetComputeNodeInputNum
• GetComputeNodeOutputNum
• GetAttrs
• GetNodeType
• GetNodeName
• GetComputeNodeInfo
• GetKernelName
• GetKernelType
• GetExtendInfo
• GetInputDataType
• GetOptionalInputDataType
• GetRequiredInputDataType
• GetOutputDataType
• SetOutputDataType
• GetInputShape
• GetInputTensor
• GetOptionalInputShape
• GetRequiredInputTensor
• GetRequiredInputShape
• GetOutputShape
• GetInputShapeRange
• GetInputTensorRange
• GetOptionalInputTensorRange
• GetDynamicInputTensorRange
• GetOptionalInputShapeRange
• GetDynamicInputShapeRange
• GetRequiredInputShapeRange
• GetRequiredInputTensorRange
• GetOutputShapeRange
• Constructor and Destructor
• InferShape
• InferShapeRange
• InferDataType
• Tiling
• PrivateAttr
• TilingParse
• InputsDataDependency
• InferOutDataTypeSameWithFirstInput
• GenSimplifiedKey
• OpExecuteFunc
• TilingInputsDataDependency
• HostInputs
• OutputShapeDependOnCompute
• Overview
• Constructor
• operator==
• SetMin
• SetMax
• GetMin
• GetMax
• Constructor
• GetAttrPointer
• GetInt
• GetListInt
• GetListListInt
• GetStr
• GetTensor
• GetFloat
• GetBool
• GetListFloat
• GetListListFloat
• GetAttrNum
• Overview
• Constructor
• operator==
• operator!=
• operator[]
• IsScalar
• SetScalar
• GetDimNum
• SetDimNum
• GetDim
• SetDim
• AppendDim
• Constructor
• GetOriginFormat
• SetOriginFormat
• GetStorageFormat
• SetStorageFormat
• GetExpandDimsType
• SetExpandDimsType
• MutableExpandDimsType
• operator==
• operator!=
• Overview
• Constructor
• GetOriginShape
• GetStorageShape
• MutableOriginShape
• MutableStorageShape
• operator==
• operator!=
• Constructor and Destructor
• operator
• GetAddr
• GetSize
• SetSize
• GetPlacement
• SetPlacement
• Free
• SetAddr
• IsSharedWith
• ShareFrom
• TensorPlacementUtils
• Constructor
• GetShapeSize
• GetData
• SetData
• GetAddr
• GetSize
• SetSize
• GetDataType
• SetDataType
• CreateFollowing
• GetStorageShape
• MutableStorageShape
• GetOriginShape
• MutableOriginShape
• GetShape
• GetStorageFormat
• SetStorageFormat
• GetOriginFormat
• SetOriginFormat
• GetFormat
• MutableFormat
• GetExpandDimsType
• SetExpandDimsType
• GetPlacement
• SetPlacement
• GetTensorData
• MutableTensorData
• GetInputShape
• GetInputTensor
• GetOptionalInputTensor
• GetRequiredInputTensor
• GetOptionalInputShape
• GetRequiredInputShape
• GetOutputShape
• SetTilingKey
• GetTilingKey
• SetBlockDim
• GetBlockDim
• SetTilingCond
• GetTilingCond
• GetTilingData
• GetRawTilingData
• GetWorkspaceSizes
• GetWorkspaceNum
• GetPlatformInfo
• Constructor
• GetCapacity
• GetDataSize
• SetDataSize
• GetData
• Append
• CreateCap
• CalcTotalSize
• Init
• operator
• Overview
• MutableData
• GetData
• TensorPlacement
• Internal Associated APIs
• Constructor and Destructor
• Malloc
• Free
• MallocAdvise
• Constructor and Destructor
• GetString
• Relational Operator Overloading
• Find
• Hash
• GetLength
• Constructor and Destructor
• CreateFrom
• GetValue
• AutoMappingSubgraphIOIndexFuncRegister
• Constructor and Destructor
• GetAutoMappingSubgraphIOIndexFunc
• AddAutoMappingSubgraphIOIndexFunc
• Constructor and Destructor
• SetInputHandleShapesAndTypes
• SetOutputHandleShapesAndTypes
• GetInputHandleShapesAndTypes
• GetOutputHandleShapesAndTypes
• SetMarks
• GetMarks
• Create
• GetResourceContext
• SetResourceContext
• RegisterReliedOnResourceKey
• AddChangedResourceKey
• GetReliedOnResourceKeys
• GetChangedResourceKeys
• ClearChangedResourceKeys
• InferFormatFuncRegister
• InferShapeFuncRegister
• InferValueRangeFuncRegister
• ListTensorType
• Constructor and Destructor
• GetAddr
• GetSize
• SetSize
• Free
• AddCount
• SubCount
• GetCount
• OperatorCreatorRegister
• CreateOperator
• GetOpsTypeList
• IsExistOp
• Constructor and Destructor
• AddControlInput
• BreakConnect
• IsEmpty
• InferShapeAndType
• GetAttr
• GetAllAttrNamesAndTypes
• GetAllIrAttrNamesAndTypes
• GetDynamicInputNum
• GetDynamicInputDesc
• GetDynamicOutputNum
• GetDynamicOutputDesc
• GetDynamicSubgraph
• GetDynamicSubgraphBuilder
• GetInferenceContext
• GetInputConstData
• GetInputsSize
• GetInputDesc
• GetName
• GetSubgraph
• GetSubgraphBuilder
• GetSubgraphNamesCount
• GetSubgraphNames
• GetOpType
• GetOutputDesc
• GetOutputsSize
• SetAttr
• SetInput
• SetInferenceContext
• SetInputAttr
• SetOutputAttr
• GetInputAttr
• GetOutputAttr
• TryGetInputDesc
• UpdateInputDesc
• UpdateOutputDesc
• UpdateDynamicInputDesc
• UpdateDynamicOutputDesc
• VerifyAllAttr
• DynamicInputRegister
• DynamicInputRegisterByIndex
• DynamicOutputRegister
• SubgraphCountRegister
• SetSubgraphBuilder
• OpReceiver
• Overview
• Constructor and Destructor
• REGISTER_CUSTOM_OP
• FrameworkType
• OriginOpType
• ParseParamsFn
• ParseParamsByOperatorFn
• FusionParseParamsFn
• FusionParseParamsFn (Overload)
• ParseSubgraphPostFn
• ParseOpToGraphFn
• ImplyType
• DelInputWithCond
• DelInputWithOriginalType
• GetImplyType
• GetOmOptype
• GetOriginOpTypeSet
• GetFrameworkType
• GetParseParamFn
• GetParseParamByOperatorFn
• GetFusionParseParamFn
• GetFusionParseParamByOpFn
• GetParseSubgraphPostFn
• GetParseOpToGraphFn
• AutoMappingFn
• AutoMappingByOpFn
• AutoMappingFnDynamic
• AutoMappingByOpFnDynamic
• AutoMappingSubgraphIndex
• InputReorderVector
• Promote
• Constructor and Destructor
• SetShape
• GetShape
• SetType
• GetDataType
• Constructor and Destructor
• GetDim
• GetDims
• GetDimNum
• GetShapeSize
• SetDim
• TensorDescInfo
• Constructor and Destructor
• GetConstData
• GetDataType
• GetExpandDimsRule
• GetFormat
• GetName
• GetOriginFormat
• GetOriginShape
• GetPlacement
• GetRealDimCnt
• GetShape
• GetShapeRange
• GetSize
• SetConstData
• SetDataType
• SetExpandDimsRule
• SetFormat
• SetName
• SetOriginFormat
• SetOriginShape
• SetPlacement
• SetRealDimCnt
• SetSize
• SetShape
• SetShapeRange
• SetUnknownDimNumShape
• Update
• TensorType
• Constructor and Destructor
• Clone
• IsValid
• GetData
• GetDataType
• GetExpandDimsRule
• GetFormat
• GetOriginFormat
• GetOriginShapeDim
• GetOriginShapeDimNum
• GetPlacement
• GetSize
• GetShapeDimNum
• GetShapeDim
• GetTensorDesc
• SetData
• SetDataType
• SetExpandDimsRule
• SetFormat
• SetOriginFormat
• SetOriginShapeDim
• SetOriginShapeDimNum
• SetPlacement
• SetShapeDimNum
• SetShapeDim
• SetTensorDesc
• ResetData
• DataTypeToAscendString
• AscendStringToDataType
• FormatToAscendString
• AscendStringToFormat
• DataTypeToSerialString
• SerialStringToDataType
• FormatToSerialString
• SerialStringToFormat
• DataFormatToFormat
• GetDataTypeLength
• VerifyFuncRegister
• ConvertToAscendString
• ConvertToListAscendString
• GetC0Format
• GetC0Value
• GetFormatFromC0
• GetFormatFromSub
• GetFormatFromSubAndC0
• GetFormatName
• GetPrimaryFormat
• GetSizeByDataType
• GetSizeInBytes
• GetSubFormat
• HasC0Format
• HasSubFormat
• ge::graphStatus
• DataType
• Format
• BROADCAST_INFER
• COMMON_INFER_FUNC_REG
• DECLARE_ERRORNO
• ELMTWISE_INFER_SHAPEANDTYPE
• IMPLEMT_COMMON_INFERFUNC
• IMPLEMT_INFERFORMAT_FUNC
• IMPLEMT_INFERFUNC
• IMPLEMT_VERIFIER
• INFER_FORMAT_FUNC_REG
• INFER_FUNC_REG
• Prototype Definition (REG_OP)
• Prototype Definition Derivative APIs
• VERIFY_FUNC_REG
• Compatibility
• Mapping Between Ascend and Kirin AI Processors of the Same Generation
• Overview
• L2 Cache
• Data Type
• Atomic Operation
• Synchronization Control
• Matrix Computing
• Data Movement
• Resource management
• System Variables
• Kernel Tiling
• SuperKernel
• High-Level API Porting Guide
• Operator Compilation Porting Guide
• Overview
• Environment Setup
• Three-Stage Quantization Procedure
• Quantization Effect Evaluation
• Exporting the Original Model as a Friendly-Structure ONNX Model
• Converting an ONNX Model to a CANN Model
• How Can I Determine Whether a Model Can Run on Mobile Phones?
• What Are the Data Formats Supported by the Inference Function?
• What Should I Do if the Type of the Output Operator Is Incorrect for the OMG Offline Model?
• How can I determine which operators have better performance on CANN during model design?
• Glossary
• How to Obtain the Version
• Supported Operators
• Visualization Tool
• About This Kit
• Text-to-Speech
• Speech Recognition
• Personal Data Processing Information
• About This Kit
• OCR
• Face Detection
• Face Verification
• Subject Segmentation
• Multi-Object Detection
• Skeleton Detection
• Image Super Resolution
• Searching for Images by Text
• Personal Data Processing Information
• About This Kit
• Intents Kit Integration Process
• Overview
• Use Cases
• Integration Solution
• Testing Solution
• Overview
• Use Cases
• Integration Solution
• Testing Solution
• Overview
• Use Cases
• Integration Solution
• Overview
• Use Cases
• Overview
• Integration in Task Execution Scenarios via a Configuration File
• Solution Overview
• Integration via a Link-based Decorator
• Integration via a Page-based Decorator
• Integration via a Function-based Decorator
• Definition Rules for Custom Intents
• One-Step Access to Functions
• Overview
• Use Cases
• Function Search Solution
• Content Search Solution
• What Should I Do If the Error Message "Intent 'xxxxxx' is not included in domain 'xxxxxx'. Select an intent from the list of suggestions." Is Displayed for intentName?
• What Should I Do If the Error Message "Value should be one of: "intentName", "domain", "intentVersion", "srcEntry", "uiAbility", "serviceExtension", "uiExtension", "form"" Is Displayed for inputParams?
• What Should I Do If the App Launched by Celia Exits Unexpectedly When I Use the Intents Kit Debug Assistant Agent for Joint Debugging?
• Is There a Cloud-based Dynamic Slot Declaration Solution for the One-Step Function Access Scenario?
• Glossary
• Appendix A: How to Obtain the UID of a HUAWEI ID
• About This Kit
• Using MindSpore Lite for Model Conversion
• Using MindSpore Lite for Model Inference (C/C++)
• Using the MindSpore Lite Engine for On-Device Training (C/C++)
• Using MindSpore Lite for Image Classification (ArkTS)
• Using MindSpore Lite for Image Classification (C/C++)
• Using MindSpore Lite for Speech Recognition (C/C++)
• MindSpore Lite Kit Operator List
• MindSpore Lite Kit Glossary
• About This Kit
• Word Segmentation
• Entity Extraction
• About This Kit
• Connecting NNRt to an AI Inference Framework
• Neural Network Runtime Kit Glossary
• About This Kit
• TextReader
• AICaption
• About This Kit
• Face Liveness Detection
• Card Recognition
• Document Scanning
• AI Image Recognition
• Personal Data Processing Information
• Free Hopping Documentation Path Adjustment
• About This Kit
• Creating an NDK Project
• Overview
• Building an NDK Project with the DevEco Studio Template
• Building NDK Projects with Command-Line CMake
• Building an NDK Project with Prebuilt Libraries
• BiSheng Compiler
• Integrating a Third-Party Dynamic Link Library
• Overview
• C/C++ Library Mechanisms
• Using fdsan
• Node-API Overview
• Node-API Status Codes
• Node-API Data Types and APIs
• Node-API Development Specifications
• Node-API Development Process
• Using Node-API Extension APIs
• Working with Arrays Using Node-API
• Working with ArrayBuffer Using Node-API
• Working with BigInt Using Node-API
• Working with Buffer Using Node-API
• Creating Basic Data Types Using Node-API
• Working with Class Using Node-API
• Working with Cleanup Hooks Using Node-API
• Working with Date Using Node-API
• Error Handling Using Node-API
• Associating Data with a Running Environment to Tie Their Lifecycle Using Node-API
• Working with Functions Using Node-API
• Performing Lifecycle Management Using Node-API
• Working with Objects Using Node-API
• Working with Other Node-API Utilities
• Working with Primitives Using Node-API
• Implementing Asynchronous Operations Using Node-API
• Setting ArkTS Object Properties Using Node-API
• Working with String Using Node-API
• Customizing Asynchronous Operations Using Node-API
• Asynchronous Task Development Using Node-API
• Thread Safety Development Using Node-API
• Wrapping a Native Object in an ArkTS Object
• Wrapping a Native Object in a Sendable ArkTS Object
• Creating an ArkTS Runtime Environment Using Node-API
• Loading a Module in the Main Thread Using Node-API
• Running or Stopping an Event Loop in an Asynchronous Thread Using Node-API Extension APIs
• Loading a Module Using Node-API
• Passing a Task with the Specified Priority to an ArkTS Thread from an Asynchronous Thread Using Node-API
• Creating, Switching, and Destroying a Context in a Thread Using Node-API Extension APIs
• Creating a Strong Reference to an ArkTS Object Using Node-API Extension APIs
• Creating and Destroying a Critical Scope and Accessing String Content Using Node-API Extension APIs
• Analyzing Error Logs and Crashes Triggered by Using Node-API
• Calling an ArkTS Method with Return Value of a promise Using Node-API
• Creating a Sendable Strong Reference to an ArkTS Object Using Node-API Extension APIs
• Accelerating Property Access Using Extended Node-APIs
• FAQs
• FAQs About Stability
• FAQs About Memory Leaks
• FAQs About Basic Functionalities
• JSVM-API Overview
• JSVM-API Data Types and APIs
• JSVM-API Development Process
• JSVM-API Development Specifications
• JSVM-API FAQs
• Working with Tasks Using JSVM-API
• Working with VM Snapshots Using JSVM-API
• Working with Wasm Using JSVM-API
• Creating and Calling JS Functions Using JSVM-API
• Performing JSON Operations Using JSVM-API
• Working with Arrays Using JSVM-API
• Working with ArrayBuffer Using JSVM-API
• Creating an ArrayBuffer from External Memory Using JSVM-API
• Working with BigInt Using JSVM-API
• Working with Classes Using JSVM-API
• Working with Date Using JSVM-API
• Performing Debug Operations Using JSVM-API
• Working with Objects Using JSVM-API
• Working with Primitives Using JSVM-API
• Implementing Asynchronous Operations Using JSVM-API
• Setting JS Object Properties Using JSVM-API
• Creating and Obtaining String Values Using JSVM-API
• Obtaining the JSVM-API Version Using JSVM-API
• Error Handling Using JSVM-API
• Debugging and Profiling JS Code Using JSVM-API
• Performing Lifecycle Management Using JSVM-API
• Performing Memory Management Using JSVM-API
• Comparing JS Values Using JSVM-API
• Customizing Exception Handling Using JSVM-API
• Triggering GC Using JSVM-API
• Using JSVM-API to Obtain Heap Snapshots and Monitor Heap Memory Thresholds
• Setting the private Property Using JSVM-API
• Working with Latin1/UTF16 Strings Using JSVM-API
• Working with Proxies Using JSVM-API
• Working with Well-Known Symbols Using JSVM-API
• Working with Wrapper Objects Using JSVM-API
• Creating and Obtaining Values Using JSVM-API
• JSVM-API Debugging
• Working with Trace Using JSVM-API
• Requesting the JIT Profile for JSVM-API
• JSVM-API Secure Shield Mode
• Troubleshooting JSVM-API Memory Leaks
• Creating and Destroying JSVMs Using JSVM-API
• Accelerating Compilation Using a Code Cache
• JSVM Tuning Practices
• Using HiSmartPerf to Collect JSVM Trace
• Analyzing Web Page Memory Using DevTools
• Using Longque JS APIs
• OpenMP Overview
• Building and Running Applications Using OpenMP
• Raw File Development
• Native Bundle Development
• Using GN to Configure the HarmonyOS Build Toolchain
• Using CMake to Configure the HarmonyOS Build Toolchain
• Using Make to Configure the HarmonyOS Build Toolchain
• Using the Configure Tool to Configure the HarmonyOS Build Toolchain
• Quickly Building Third-Party Libraries Using the Lycium Cross-Compilation Framework
• Passing Complex Parameters Across Languages
• Implementing Communication Between Native Child Threads and the UI Main Thread
• Overview
• C/C++ Memory Error Detection
• LLDB Debugger
• Overview
• HarmonyOS ABIs
• CPU Features
• Using Neon Instructions
• Overview
• Downloading and Installing DevEco Studio
• Using the New UI
• Project Overview
• Project Directory Structure
• Introduction to Project Templates
• Creating a Project
• Adding and Deleting a Module
• Importing and Referencing a Module
• Unloading and Loading a Module
• Developing a Static Shared Package
• Developing a Dynamic Shared Package
• Publishing a Shared Package
• Referencing and Managing a Shared Package
• Release Notes
• Overview
• Getting Started
• Setting the Configuration File
• Logs
• ohpm-repo help
• ohpm-repo install
• ohpm-repo start
• ohpm-repo restart
• ohpm-repo stop
• ohpm-repo --version
• ohpm-repo encrypt_password
• ohpm-repo pack
• ohpm-repo deploy
• ohpm-repo restore
• ohpm-repo mirror_storage
• ohpm-repo check_storage
• ohpm-repo remove_instance
• ohpm-repo export_pkginfo
• ohpm-repo batch_download
• ohpm-repo batch_publish
• ohpm-repo export_userinfo
• ohpm-repo import_userinfo
• ohpm-repo export_pkgPermission
• ohpm-repo import_pkgPermission
• Single-Node Deployment
• Multi-Instance Deployment
• Frontend page
• Personal Center Home Page
• User Management
• Repository Management
• Package Permission Management
• Authentication Management
• Organization Management
• Operation Log
• System Settings
• Security Configuration
• FAQs
• Data Migration
• Upgrading from 1.0.1 to 2.X.X/5.X.X
• Upgrading from 1.1.0 to 2.X.X/5.X.X
• Upgrading 2.X.X/5.X.X to a Later Version
• Storage Plugin Configuration
• Template File
• Authentication Plugin Configuration
• Template File
• Custom Login Verification Plugin Configuration
• Template Files
• Data Backup
• Export of Metadata from the Central Repository of the OpenHarmony Third-Party Library to ohpm-repo
• ohpm Repository Interface Protocol
• Configuration
• Template Files
• Deploying the ohpm-repo Service Using a Dockerfile
• Adding an Ability
• Adding a Page
• Generating a Single-Layer Icon
• Creating a Service Widget
• Creating an Insight Intent
• Setting Up the Development Environment Offline
• Editor Basics
• Code Generation/Completion
• Real-time Code Check and Quick Fix
• Code Linter
• Rule Changes
• Recommended Rules
• @typescript-eslint/adjacent-overload-signatures
• @typescript-eslint/array-type
• @typescript-eslint/await-thenable
• @typescript-eslint/ban-ts-comment
• @typescript-eslint/ban-tslint-comment
• @typescript-eslint/ban-types
• @typescript-eslint/brace-style
• @typescript-eslint/class-literal-property-style
• @typescript-eslint/comma-dangle
• @typescript-eslint/comma-spacing
• @typescript-eslint/consistent-indexed-object-style
• @typescript-eslint/consistent-type-assertions
• @typescript-eslint/consistent-type-definitions
• @typescript-eslint/consistent-type-imports
• @typescript-eslint/default-param-last
• @typescript-eslint/dot-notation
• @typescript-eslint/explicit-function-return-type
• @typescript-eslint/explicit-member-accessibility
• @typescript-eslint/explicit-module-boundary-types
• @typescript-eslint/func-call-spacing
• @typescript-eslint/init-declarations
• @typescript-eslint/keyword-spacing
• @typescript-eslint/lines-between-class-members
• @typescript-eslint/member-delimiter-style
• @typescript-eslint/member-ordering
• @typescript-eslint/method-signature-style
• @typescript-eslint/naming-convention
• @typescript-eslint/no-array-constructor
• @typescript-eslint/no-base-to-string
• @typescript-eslint/no-confusing-non-null-assertion
• @typescript-eslint/no-confusing-void-expression
• @typescript-eslint/no-dupe-class-members
• @typescript-eslint/no-duplicate-imports
• @typescript-eslint/no-dynamic-delete
• @typescript-eslint/no-empty-function
• @typescript-eslint/no-empty-interface
• @typescript-eslint/no-explicit-any
• @typescript-eslint/no-extraneous-class
• @typescript-eslint/no-extra-non-null-assertion
• @typescript-eslint/no-extra-parens
• @typescript-eslint/no-extra-semi
• @typescript-eslint/no-floating-promises
• @typescript-eslint/no-for-in-array
• @typescript-eslint/no-implicit-any-catch
• @typescript-eslint/no-implied-eval
• @typescript-eslint/no-inferrable-types
• @typescript-eslint/no-invalid-this
• @typescript-eslint/no-invalid-void-type
• @typescript-eslint/no-loop-func
• @typescript-eslint/no-loss-of-precision
• @typescript-eslint/no-magic-numbers
• @typescript-eslint/no-misused-new
• @typescript-eslint/no-misused-promises
• @typescript-eslint/no-namespace
• @typescript-eslint/no-non-null-asserted-optional-chain
• @typescript-eslint/no-non-null-assertion
• @typescript-eslint/no-parameter-properties
• @typescript-eslint/no-redeclare
• @typescript-eslint/no-require-imports
• @typescript-eslint/no-restricted-syntax
• @typescript-eslint/no-shadow
• @typescript-eslint/no-this-alias
• @typescript-eslint/no-throw-literal
• @typescript-eslint/no-type-alias
• @typescript-eslint/no-unnecessary-boolean-literal-compare
• @typescript-eslint/no-unnecessary-condition
• @typescript-eslint/no-unnecessary-qualifier
• @typescript-eslint/no-unnecessary-type-arguments
• @typescript-eslint/no-unnecessary-type-assertion
• @typescript-eslint/no-unnecessary-type-constraint
• @typescript-eslint/no-unsafe-argument
• @typescript-eslint/no-unsafe-assignment
• @typescript-eslint/no-unsafe-call
• @typescript-eslint/no-unsafe-member-access
• @typescript-eslint/no-unsafe-return
• @typescript-eslint/no-unused-expressions
• @typescript-eslint/no-unused-vars
• @typescript-eslint/no-use-before-define
• @typescript-eslint/no-useless-constructor
• @typescript-eslint/prefer-as-const
• @typescript-eslint/prefer-enum-initializers
• @typescript-eslint/prefer-for-of
• @typescript-eslint/prefer-function-type
• @typescript-eslint/prefer-includes
• @typescript-eslint/prefer-literal-enum-member
• @typescript-eslint/prefer-namespace-keyword
• @typescript-eslint/prefer-nullish-coalescing
• @typescript-eslint/prefer-optional-chain
• @typescript-eslint/prefer-readonly
• @typescript-eslint/prefer-readonly-parameter-types
• @typescript-eslint/prefer-reduce-type-parameter
• @typescript-eslint/prefer-regexp-exec
• @typescript-eslint/prefer-string-starts-ends-with
• @typescript-eslint/prefer-ts-expect-error
• @typescript-eslint/promise-function-async
• @typescript-eslint/quotes
• @typescript-eslint/require-array-sort-compare
• @typescript-eslint/require-await
• @typescript-eslint/restrict-plus-operands
• @typescript-eslint/restrict-template-expressions
• @typescript-eslint/return-await
• @typescript-eslint/semi
• @typescript-eslint/space-before-function-paren
• @typescript-eslint/space-infix-ops
• @typescript-eslint/strict-boolean-expressions
• @typescript-eslint/switch-exhaustiveness-check
• @typescript-eslint/triple-slash-reference
• @typescript-eslint/type-annotation-spacing
• @typescript-eslint/typedef
• @typescript-eslint/unbound-method
• @typescript-eslint/unified-signatures
• prefer-const
• eqeqeq
• @security/no-commented-code
• @security/no-cycle
• @security/no-unsafe-aes
• @security/no-unsafe-dh
• @security/no-unsafe-dsa
• @security/no-unsafe-dh-key
• @security/no-unsafe-dsa-key
• @security/no-unsafe-ecdsa
• @security/no-unsafe-hash
• @security/no-unsafe-mac
• @security/no-unsafe-rsa-encrypt
• @security/no-unsafe-rsa-key
• @security/no-unsafe-rsa-sign
• @security/no-unsafe-3des
• @security/specified-interface-call-chain-check
• @security/no-unsafe-kdf
• @security/no-unsafe-sm4
• @security/no-unsafe-sm2-key
• @security/no-unsafe-sm2-cipher
• @security/no-unsafe-ecdh
• @security/no-unsafe-huks
• @performance/avoid-overusing-custom-component-check
• @performance/bad-deep-clone-check
• @performance/constant-property-referencing-check-in-loops
• @performance/crypto-replacement-check
• @performance/custom-node-memory-leak-check
• @performance/dark-color-mode-check
• @performance/datashare-query-unrelease-check
• @performance/foreach-args-check
• @performance/foreach-index-check
• @performance/gif-hardware-decoding-check
• @performance/hp-arkui-avoid-update-auto-state-var-in-aboutToReuse
• @performance/hp-arkui-avoid-empty-callback
• @performance/hp-arkui-combine-same-arg-animateto
• @performance/hp-arkui-image-async-load
• @performance/hp-arkui-load-on-demand
• @performance/hp-arkui-limit-refresh-scope (Deprecated)
• @performance/hp-arkui-no-func-as-arg-for-reusable-component
• @performance/hp-arkui-no-high-freq-log (Deprecated)
• @performance/hp-arkui-no-stringify-in-lazyforeach-key-generator
• @performance/hp-arkui-no-state-var-access-in-loop
• @performance/hp-arkts-no-use-any-export-current
• @performance/hp-arkts-no-use-any-export-other
• @performance/hp-arkui-remove-container-without-property
• @performance/hp-arkui-replace-nested-reusable-component-by-builder
• @performance/hp-arkui-reduce-pangesture-distance
• @performance/hp-arkui-remove-redundant-nest-container
• @performance/hp-arkui-remove-redundant-state-var
• @performance/hp-arkui-remove-unchanged-state-var
• @performance/hp-arkui-set-cache-count-for-lazyforeach-grid
• @performance/hp-arkui-suggest-cache-avplayer
• @performance/hp-arkui-suggest-reuseid-for-if-else-reusable-component
• @performance/hp-arkui-suggest-use-effectkit-blur
• @performance/hp-arkui-suggest-use-get-anonymousid-async
• @performance/hp-arkui-use-attributeUpdater-control-refresh-scope
• @performance/hp-arkui-use-grid-layout-options
• @performance/hp-arkui-use-id-in-get-resource-sync-api
• @performance/hp-arkui-use-local-var-to-replace-state-var
• @performance/hp-arkui-use-onAnimationStart-for-swiper-preload
• @performance/hp-arkui-use-object-link-to-replace-prop
• @performance/hp-arkui-use-row-column-to-replace-flex
• @performance/hp-arkui-use-reusable-component
• @performance/hp-arkui-use-scale-to-replace-attr-animateto
• @performance/hp-arkui-use-taskpool-for-web-request
• @performance/hp-arkui-use-transition-to-replace-animateto
• @performance/hp-arkui-use-word-break-to-replace-zero-width-space
• @performance/hp-arkui-wrap-waterflow-if-else-footer (Deprecated)
• @performance/high-frequency-log-check
• @performance/hp-ffrt-no-use-std
• @performance/hp-performance-no-closures
• @performance/hp-performance-no-dynamic-cls-func
• @performance/init-list-component
• @performance/js-code-cache-by-interception-check
• @performance/js-code-cache-by-precompile-check
• @performance/lazyforeach-args-check (Deprecated)
• @performance/lottie-animation-destroy-check
• @performance/multiple-associations-state-var-check
• @performance/monitor-invisible-area-in-image-animation
• @performance/no-use-any-import
• @performance/no-high-loaded-frame-rate-range
• @performance/number-init-check
• @performance/nested-post-frame-callback-check
• @performance/object-creation-check (Deprecated)
• @performance/reasonable-audio-use-check
• @performance/reasonable-gps-use-check
• @performance/reuse-date-instances-check
• @performance/reasonable-sensor-use-check
• @performance/sparse-array-check
• @performance/start-window-icon-check
• @performance/state-variable-usage-in-ui-format-check
• @performance/typed-array-check
• @performance/timezone-interface-check
• @performance/tabs-on-change-check
• @performance/update-state-var-between-animatetos-check
• @performance/web-cache-mode-check
• @performance/web-on-active-check
• @performance/waterflow-data-preload-check
• @previewer/mandatory-default-value-for-local-initialization
• @previewer/no-page-method-on-preview-component
• @previewer/no-unallowed-decorator-on-root-component
• @cross-device-app-dev/color-contrast
• @cross-device-app-dev/color-value
• @cross-device-app-dev/font-size-unit
• @cross-device-app-dev/font-size
• @cross-device-app-dev/grid-columns-span
• @cross-device-app-dev/grid-span-value
• @cross-device-app-dev/one-multi-breakpoint-check
• @cross-device-app-dev/sidebar-navigation
• @cross-device-app-dev/size-unit
• @cross-device-app-dev/touch-target-size
• @cross-device-app-dev/window-size-change-listener-check
• @cross-device-app-dev/immersive-effect-check
• @hw-stylistic/array-bracket-spacing
• @hw-stylistic/brace-style
• @hw-stylistic/comma-spacing
• @hw-stylistic/curly
• @hw-stylistic/file-naming-convention
• @hw-stylistic/indent
• @hw-stylistic/keyword-spacing
• @hw-stylistic/max-len
• @hw-stylistic/no-multi-spaces
• @hw-stylistic/no-tabs
• @hw-stylistic/object-property-newline
• @hw-stylistic/one-var-declaration-per-line
• @hw-stylistic/operator-linebreak
• @hw-stylistic/quotes
• @hw-stylistic/semi-spacing
• @hw-stylistic/space-before-blocks
• @hw-stylistic/space-before-function-paren
• @hw-stylistic/space-infix-ops
• @correctness/avsession-buttons-check
• @correctness/audio-interrupt-check
• @correctness/audio-pause-or-mute-check
• @correctness/avsession-metadata-check
• @correctness/image-pixel-format-check
• @correctness/image-interpolation-check
• @correctness/listen-default-network-change
• @correctness/listen-multi-network-concurrent
• @correctness/multimedia-use-stride-in-image-receiver
• @correctness/redundant-dependency-check
• @correctness/v1-nested-object-property-change-format-check
• @correctness/v1-state-object-member-used-in-function-parameter-check
• @correctness/accessibility-label-check
• @correctness/accessibility-focus-redundancy-check
• @correctness/accessibility-type-redundancy-check
• @correctness/accessibility-status-missing-check
• @compatibility/api-compatibility-check
• @compatibility/deprecate-api-check
• Code Scanner
• Clang-Tidy Code Inspection
• Code Refactoring
• Document Generation
• @author
• @copyright
• @deprecated
• @param
• @returns
• @since
• @throws
• @todo
• @version
• {@link}
• Quickly Inserting Scenario-based Code Snippets
• Cross-language Code Editing
• Code Indexing (clangd)
• Introduction
• PreviewChecker Inspection Rules
• Previewing an ArkTS/JS App/Atomic Service
• Previewing an ArkUI Page or Component
• Using Profile Manager
• Previewing Your App/Atomic Service on Multiple Devices
• Using Inspector Bidirectional Preview
• Mocking Preview Data
• Debugging Your App Using the Previewer
• List of Previewer-Capable APIs
• Signing Your App/Service Automatically
• Signing Your App/Atomic Service Manually
• Running Your App on a Local Real Device
• Running a Lite Wearable App via the Simulator
• Working Environment
• Supported Devices
• Differences Between the Emulator and the Real Device
• Creating an Emulator
• Starting/Stopping the Emulator
• Controlling the Screen
• Using the Toolbar
• Moving and Scaling the Emulator
• Accessing the Network Using the Emulator
• Installing an App Package and Uploading Files
• Using Extended Features
• Customizing the Virtual Device Screen
• Using the Emulator via the CLI
• Deploying an Emulator Offline
• Emulator Error Codes
• Debugging Overview
• Running/Debugging Configuration
• Debugging Scenario Description
• Starting Debugging in Debug Mode
• Starting Debugging in Attach Mode
• Using Wait-for-Debugger Mode
• Using Breakpoints
• Checking Variables
• Performing Reverse Debugging
• Debugging Extension Abilities
• Performing Multi-Process Debugging
• Printing Expressions
• Using Smart Step Into
• Viewing Asynchronous Function Call Stacks
• Starting the Debugging Process
• Using Breakpoints
• Checking Variables
• Debugging Assembly Code
• Viewing Memory Information
• Using LLDB Debugging Commands
• Performing Reverse Debugging
• Visualizing Call Stacks
• Visualizing .so Information
• Setting Execution Points
• Using Smart Step Into
• Speeding Up Native Debugging Startup
• Debugging Native Child Processes
• Using the Debugger
• Performing Cross-Language Debugging
• Debugging Third-Party Library Source Code
• Performing Incremental Debugging
• Using Hot Reload
• Viewing ArkUI State Variables
• Using Developer Options
• Analyzing UI Layouts
• Accessing Device Files
• Location Simulation
• Debugging Databases
• Capturing Screenshots
• Recording Screens
• Mirroring Device Screens
• Runtime Configuration Error Codes
• Hot Reload and Incremental Debugging Error Codes
• Debugging Error Codes
• hdc Command Error Codes
• Log Analysis
• FaultLog
• Viewing Cpp Crash Logs
• Viewing AppFreeze Logs
• Viewing App Killed Logs
• Parsing App minidump/coredump Files
• Analyzing Stack Traces
• Analyzing Exception Stack Traces
• ASan: Detecting Memory Errors
• HWASan: Detecting Memory Errors
• TSan: Detecting Thread Errors
• UBSan: Detecting Undefined Behaviors
• ArkCompiler: Detecting Runtime Issues
• Instrument Test
• Local Test
• Mock
• Black-box coverage
• Instrument Test Error Codes
• Local Test Error Codes
• CLI Test Error Codes
• Setting Up the Proxy
• Terminal Environment Variables
• DevEco Studio Parameters
• Disabling Data Collecting
• Log Collection and Diagnosis Data
• ohpm Version Number Rules
• pac.json5 Privacy Manifest File
• Release Notes
• Build System Lifecycle
• Build Tasks
• Build Products
• Overview
• hvigor-config.json5 File
• Project-level build-profile.json5 File
• Module-level build-profile.json5 File
• Managing Modules
• Adding Dependencies
• Introduction
• Examples
• Building a HAR
• Configuring for C++ Builds
• Quick Link to a Pre-built Library
• Implementing Multi-project Builds
• Understanding the Logic for Checking HAP Uniqueness
• Customizing the .hvigor Directory Path
• Introduction
• Examples
• Introduction
• Examples
• Introduction
• Examples
• Using the Daemon Process
• Enabling Parallel Build
• Conducting an Incremental Build
• Conducting Modular Compilation
• Analyzing the Build Process
• Performance/Memory Optimization Practices: Multi-Target Build
• Performance/Memory Optimization Practices: Multi-HAP/Multi-HSP Build
• Performance Optimization Practices: Custom Plugins and Tasks
• Performance Optimization Practices: Mixed-Language Project Synchronization
• Performance Optimization Practices: Cache Plugins
• Memory Optimization Practices: Remote Build
• Experimental Features
• Developing an Hvigor Task
• Developing an Hvigor Plugin
• Basic Build Capabilities
• Plugin Context
• API Usage Examples
• Task Visualization and Execution
• Using Obfuscation for Code Hardening
• Logging
• Compilation and Building FAQs
• Dependency Error Codes
• Script Error Codes
• Configuration Error Codes
• Resource Missing Error Codes
• Syntax Error Codes
• Specification Error Codes
• Permission Error Codes
• Operation Error Codes
• ArkTS Compilation Error Codes
• Signature Tool Error Codes
• Introduction to Performance Optimization Tools
• UI Layout
• Session Area
• Data Area
• Performance Profiling Procedure
• Realtime Monitor for Problem Demarcating
• In-depth Capture for Problem Locating
• Frame Analysis
• ArkUI Analysis
• Analyzing App Stuttering Issues Using the Frame Template
• Basic Operations with Launch Analysis
• Case: Analyzing the First Frame Completion Delay During Cold Start
• Basic Operations with Memory Snapshot Analysis
• Analyzing the ArkTS Memory Leak
• Overview
• Filtering Memory Analysis Data
• Analyzing Memory at Launch
• Analyzing the Native Memory Leak
• UI Component Memory Analysis: ComMemory
• Energy Consumption Diagnosis: Energy
• Loading and Frame Loss Analysis: ArkWeb
• Network Diagnosis: Network
• Parallelism and Concurrency Analysis: Concurrency
• GPU Activity Analysis
• Basic Time Analysis: Time
• CPU Activity Analysis
• I/O Latency Analysis: FileSystem
• Graphics Profiler
• DevEco Profiler Terms
• FAQs
• Error Codes
• Shortcut Keys
• Release
• O&M Analysis
• Obtaining Command Line Tools
• Using codelinter
• ArkTSDoc Generator (arktsdoc)
• Using the Emulator
• Using hvigorw
• Using hstack
• System Platform Requirements
• ohpmrc
• oh-package.json5
• ohpm config
• ohpm help
• ohpm info
• ohpm init
• ohpm install
• ohpm list
• ohpm publish
• ohpm uninstall
• ohpm prepublish
• ohpm unpublish
• ohpm update
• ohpm root
• ohpm version
• ohpm cache clean
• ohpm run
• ohpm --version
• ohpm ping
• ohpm clean
• ohpm dist-tags
• ohpm convert
• ohpm dependency-check
• ohpm config Error Codes
• ohpm info Error Codes
• ohpm install Error Codes
• ohpm list Error Codes
• ohpm publish Error Codes
• ohpm uninstall Error Codes
• ohpm unpublish Error Codes
• ohpm update Error Codes
• ohpm root Error Codes
• ohpm version Error Codes
• ohpm cache clean Error Codes
• ohpm run Error Codes
• ohpm ping Error Codes
• ohpm clean Error Codes
• ohpm dist-tags Error Codes
• ohpm convert Error Codes
• ohpm dependency-check Error Codes
• Common ohpm Command Error Codes
• Setting Up a Pipeline