package androidx.transition; import android.graphics.drawable.Drawable; import android.view.View; import android.view.ViewOverlay; class ViewOverlayApi18 implements ViewOverlayImpl { private final ViewOverlay mViewOverlay; ViewOverlayApi18(View view) { this.mViewOverlay = view.getOverlay(); } public void add(Drawable drawable) { this.mViewOverlay.add(drawable); } public void remove(Drawable drawable) { this.mViewOverlay.remove(drawable); } }Download file