You can use this:
manifest
<provider android:authorities="@string/facebook_app_authority" android:name="com.facebook.FacebookContentProvider" android:exported="true" />
Gradle
productFlavors { flavor1 { applicationId "com.id.flavor1" versionCode 1 versionName "1.0.0" resValue "string", "facebook_app_authority", "com.facebook.app.FacebookContentProvider0000000000000000" } flavor2 { applicationId "com.id.flavor2" versionCode 1 versionName "1.0.0" resValue "string", "facebook_app_authority", "com.facebook.app.FacebookContentProvider0000000000000001" } }
Replace 0000000000000000 with your application id
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