Question

android 怎么给visible添加动画

Answer 1

mAppHiddenAction.setDuration(400);
mAppGridView.startAnimation(mHiddenAction);
scrollView.startAnimation(mAppHiddenAction);
relativelayout.startAnimation(mAppHiddenAction);

后面这些代码应该在mAppHiddenAction结束后再执行，而不是直接在这就执行，你可用hander+定时器延后执行即可
scrollView.setVisibility(View.GONE);
mAppGridView.setVisibility(View.GONE);
tv.setVisibility(View.GONE);
btn_save.setVisibility(View.GONE);