package android.content; import android.database.ContentObserver; import android.net.Uri; public class ContentResolver { public final void registerContentObserver(Uri uri, boolean notifyForDescendants, ContentObserver observer) { } public final void unregisterContentObserver(ContentObserver observer) { } public void notifyChange(Uri uri, ContentObserver observer) { } public int getUserId() { return 0; } public final void registerContentObserver(Uri uri, boolean notifyForDescendants, ContentObserver observer, int userHandle) { } }