离开活动时（之前）如何启动layoutAnimation [英] How can I start layoutAnimation when(before) leaving an activity

问题描述

我的活动中有一个LinearLayout视图。

I have a LinearLayout View in my activity.

当我按下后退按钮时，我希望LinearLayout的子项滑出。

When I press back button I want LinearLayout's children to slide out.

我有以下代码不会执行任何操作：

I have the following code which doesn't do anything:

private void SlideOut()
{
    LayoutAnimationController controller = AnimationUtils.loadLayoutAnimation(this, R.anim.layout_animation_row_slide_out);
    Animation animation=controller.getAnimation();
    animation.setFillAfter(true);
    LinearLayout menuLayout =((LinearLayout)findViewById(R.id.menuLayout));
    menuLayout.setLayoutAnimation(controller);
    menuLayout.startLayoutAnimation();
}

@Override
public void onBackPressed(){
    //super.onBackPressed();
    SlideOut();     
}

我已注释掉super.OnBackPressed（）来查看动画是否开始，

I have commented out super.OnBackPressed() to see if the animation starts, and it don't start.

有人遇到类似的问题吗？

Somebody with similar problems ?

推荐答案

我认为您可能会在动画制作完成之前退出活动。尝试实现动画监听器

I think you might be exiting the activity before animation is finished. Try implementing Animation Listener

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