public class Test extends View { public Test(final Context context) { super(context); } public Test(final Context context, final AttributeSet attrs) { super(context, attrs); } public Test(final Context context, final AttributeSet attrs, final int defStyleAttr) { super(context, attrs, defStyleAttr); } @Override protected void onVisibilityChanged(@NonNull final View changedView, final int visibility) { Log.d(TAG, ” visibility=” + visibility); […]