AnimUtils.java 文件源码

public static void hideFab(@Nullable FloatingActionButton fab)
{
       if (fab == null)
        return;

       if (ViewCompat.isLaidOut(fab))
    {
           fab.hide();
           return;
       }
       fab.animate().cancel();
       fab.setScaleX(1f);
       fab.setScaleY(1f);
       fab.setAlpha(1f);
       fab.setVisibility(View.GONE);
       fab.animate().setDuration(200).scaleX(0).scaleY(0).alpha(0).setInterpolator(new LinearOutSlowInInterpolator());
   }