HidingLinearLayout.java 文件源码

public void show() {
  if (!isEnabled() || getVisibility() == VISIBLE) return;

  setVisibility(VISIBLE);

  AnimationSet animation = new AnimationSet(true);
  animation.addAnimation(new ScaleAnimation(0, 1, 1, 1, Animation.RELATIVE_TO_SELF, 1f, Animation.RELATIVE_TO_SELF, 0.5f));
  animation.addAnimation(new AlphaAnimation(0, 1));
  animation.setDuration(100);

  animateWith(animation);
}