dualapp-mediastore-compatibility

DualApp MediaStore APIs Compatibility Test

Tuning of Android MediaStore & File IO compatibility issues between HostProfile app and WorkProfile app (DualApp/ParallelApp), especially for OEM Android Devices.

Also run the smoking tests for Android’s Scoped Storage Feature.

Enable WorkProfile for DualApp

1. Create Profile

adb shell pm create-user --profileOf 0 --managed Island  
adb -d shell pm list users  
adb -d shell settings --user <user_id> put secure install_non_market_apps 1

2. Install apk to Profile

adb push <apk_path> /data/local/tmp/android.apk  
adb shell pm install -r -t --user <user_id> /data/local/tmp/android.apk

3. Clears

# delete profile user after tests 
adb -d shell pm list users  
adb -d shell pm remove-user <user_id>

Test Cases

1. WorkProfile/DualApp/MutliApp Recognize.
2. Read & Write file by MediaStore within DualApp.
3. File Uri/FilePath Convert within DualApp.
4. Handle sharing file within DualApp.
5. Files manipulations smoking test.

Known Problems

All IO tested above works perfectly within Google Pixel of Android 10/11/12. FileProvider is needed when interacting between HostProfile app and WorkProfile app.

OEM Android Devices’ DualApp(or MultiApp, mostly with a UserId 999) works like WorkProfile(mostly with a UserId 10+). But unlike WorkProfile, DualApp MediaStore saves files into path of user xxx-0 but not 999. This causes some problems:

1. WorkProfile App can not directly access files saved by MediaStore itself in OEM devices (Huawei, OPPO confirmed), when query by file path.
2. MediaStore query return missing within WorkProfile app when receiving sharing files from HostProfile app.
3. HostProfile App might get wrong file path, which is actually DualApp’s, when query file by MediaStore.

Demo Apk

See releases