Sharing an Application File
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
startAbility-based file sharing: You can use wantConstant.Flags to specify the read or read/write permission on the file for the target application (application with which the file is shared). The target application can call fs.open to open the file based on the URI and perform read and write operations.
Shareable Application Directories
| Application Sandbox Path | Description |
|---|---|
| /data/storage/el1/base | Encrypted database directory under /el1. |
| /data/storage/el2/base | Encrypted database directory under /el2. |
| /data/storage/el2/distributedfiles | Distributed data directory with an account under el2/. |
File URI Specifications
The file URIs are in the following format:
file://<bundleName>/<path>
-
file: indicates a file URI.
-
bundleName: specifies the owner of the file, that is, the application that shares the file.
-
path: specifies the application sandbox path of the file.
NOTE
- 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.