To make sure your app is included in the list of apps that can open a file in Google Drive app, you need to make some additions to your AndroidManiest.xml. The activity for opening Drive files & MIME Types that activity can open must be specified.
The following example code shows the manifest for "ViewerActivity". Your own app manifest must include a similar intent with your own appropriate values and MIME types that your app can open:
<activity android:name="ViewerActivity" android:label="@string/my_viewer" android:icon="@drawable/app_icon" android:exported="true"> <intent-filter> <action android:name="com.google.android.apps.drive.DRIVE_OPEN"> <data android:mimetype="image/png"> <data android:mimetype="image/jpeg"> <data android:mimetype="image/jpg"> </intent-filter> </activity>
Reference:
https://developers.google.com/drive/android/java-client
