HiHealth Core is an open platform for the fitness and health field under HMS Core. The third-party app is able to develop their specific apps using the fitness and health data provided by the HiHealth Core platform. The HMS Core is embedded in the mobile phone. The HiHealth Core subsystem will be dynamically loaded by the HMS Core when necessary. The Hmssdk-hwid is applied to process users' login and authorization scopes. The Healthsdk is the JAR package for third-party apps to connect with the HiHealth Core platform.

• system architecture

• Sequence diagram of use HiHealth

This codelab provides a basic third-party app development example. The developer only needs to complete the corresponding code fragment to realize the function development of real-time step counting. This function displays the real-time step count curve, step frequency, total number of steps, and calories burnt on the UI.

• Connect to the openness capabilities of HUAWEI HiHealth Core.
• Read the real time data from sensors

Hardware Requirements

• A computer (desktop or laptop) running Windows 7 or Windows 10
• A Huawei mobile phone (with the USB cable), which is used for debugging

Software Requirements

• JDK 1.8 or later
• Android API (level 15 or higher)
• EMUI 10.0 or later

What You Need to Be Familiar with

• Android app development (basic concepts to support for the development of a hello world app)
• Android Studio (how to build, generate, install, and debug an APK)
• Java program development (basic grammar)

1.Run the initial project (download the original framework code):

• Decompress the initial project to D:\codelab\happysport.
• Use Android Studio to open the happysport project, build and generate the APK file, download the file to the mobile phone, and view the running result. After the app is executed, the UI should display as below:

2.Add Login.

• Open java file from direction:
  app\src\main\java\com\huawei\codelabs\hihealth\happysport\utils\HiHealthSetup.java.
• Add the code of login replace to TODO: login

  HuaweiIdSignInOptions signInOptions = New HuaweiIdSignInOptions.Builder(HuaweiIdSignInOptions.DEFAULT_SIGN_IN).build();
  
  mHuaweiSignInClient = HuaweiIdSignIn.getClient(activity.getApplicationContext(), signInOptions);
  
  mAccount = HuaweiIdSignIn.getLastSignedInAccount(activity.getApplicationContext());
  
  if (mAccount == null) {
  Intent signInIntent = mHuaweiSignInClient.getSignInIntent();
  activity.startActivityForResult(signInIntent, REQUEST_CODE_LOGIN);
  } 
  
  

• These code implements login verification. The UI would pop-up the login windows if the user is not login.

3.Authorization.

• Open java file from direction:
  app\src\main\java\com\huawei\codelabs\hihealth\happysport\utils\HiHealthSetup.java.
• Add the code of authorization replace to TODO: authorization

  String[] maxScopes = Scopes.getMaxScopes();
  Scope[] allRequiredScopes = new Scope[maxScopes.length];
  
  for (int i = 0; i < allRequiredScopes.length; i++) {
  allRequiredScopes[i] = new Scope(maxScopes[i]);
  }
  
  HuaweiIdSignIn.requestPermissions(mActivity, REQUEST_CODE_PERMISSION, mAccount, allRequiredScopes);
  
  

• These code requests all authorizations. The demo would gather the set of all authorizations.

4.Register a listener of the real time data.

• app\src\main\java\com\huawei\codelabs\hihealth\happysport\viewmodels\HiHealthBaseAdapter\HiHealthBaseAdapter.java
• Add the code of client instantiation to replace TODO: client

  mSensorsClient = HuaweiHiHealth.getSensorsClient(mContext, new FitnessOptions.Builder().build());
  
  

• Open java file from direction: app\src\main\java\com\huawei\codelabs\hihealth\happysport\viewmodels\HiHealthBaseAdapter\HiHealthBaseAdapter.java.
• Add the code of listener registration to replace TODO: start

  DataSource dataSource = new DataSource.Builder()
  .setDataType(DataType.TYPE_STEP_COUNT_CUMULATIVE)
  .setDevice(new Device("hw", "hw", "hw", 0))
  .build();
  
  mSensorsClient.add(new SensorRequest.Builder()
  .setDataType(DataType.TYPE_STEP_COUNT_CUMULATIVE)
  .build(), mListener);
  
  

• These codes fetch steps count data from the sensor by setting a listener and a callback with mListener.

5.Read and Process the real time data from the sensor.

• Open java file from direction: app\src\main\java\com\huawei\codelabs\hihealth\happysport\viewmodels\HiHealthBaseAdapter\HiHealthBaseAdapter.java.
• Add the code of listener initialization to replace TODO: listener and comment out the default section.

  //private OnDataPointListener mListener = null;
  
  private OnDataPointListener mListener = new OnDataPointListener() {
  @Override
  public void onDataPoint(DataPoint dataPoint) {
  Log.d(TAG, "on data point received");
  processDataPoint(this, dataPoint);
  }
  }
  
  

• The real time data would be callback via method onDataPoint.

6.Unregister the listener.

• Open java file from direction: app\src\main\java\com\huawei\codelabs\hihealth\happysport\viewmodels\HiHealthBaseAdapter\HiHealthBaseAdapter.java.
• Add the code of listener unregistration to replace TODO: stop.

  mSensorsClient.remove(mListener);
  
  

7.Try the implementation on a mobile phone:

• Build and generate an APK file, and install it on the mobile phone.
• Open the happysport app you have just installed.
• Login windows would pop-up while the first run. Click Authorize and Login.
• HiHealthKit authorization window would pop-up while the first run. Click Authorize.
• Click the Start button to read the data of the real time step count.
• Shake your mobile to generate step count data.
• The real-time step count curve, step frequency, total number of steps, and calories burnt are displayed on the UI.
• Click Stop to stop the reading.

The following figure shows the implementation.

• Login
• Authorization
• Running

Well done. You have successfully completed this codelab and learned:

1. Connect to the openness capabilities of HUAWEI HiHealth Core.
2. Read data from the sensor in real time.

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