An application can share a file with another application based on the uniform resource identifier (URI) of the file.
Using startAbility to Start a File Application
Based on the sharing method of file picker (startAbility), an app can share a single file and grant read-only or read/write permissions to other apps through the wantConstant.Flags API of ohos.app.ability.wantConstant. The receiving app can open the URI through fileIo.open and perform read/write operations.
File URI Specifications
The file URIs are in the following format:
file://<bundleName>/<path>
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file: indicates a file URI.
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bundleName: specifies the owner of the file, that is, the application that shares the file.
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path: specifies the application sandbox path of the file.
- URI processing involves encoding and decoding. The system cannot guarantee the availability of the URI address that an application combines by itself.
- You are advised to use the APIs provided by the system to obtain URIs, for example, getUriFromPath().