Question

点击查看orhu我从下到上安排了ulayout，点击backgroundview我通过从上到下制作动画使其无法看到。但问题是这两个动画只发生在我第一次点击orbhu。然后没有动画发生，除非我重新打开活动，否则视图会变得可见并且不会显示动画。为什么这样，我该如何解决？

slide_down

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:fromYDelta="0%p" android:toYDelta="100%p" android:fillAfter="true"
        android:interpolator="@android:anim/linear_interpolator"
        android:duration="500" />
</set>

slide_up

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:fromYDelta="100%p" android:toYDelta="0%p"
        android:fillAfter="true"
        android:duration="500"/>
</set>

代码

slideDown = AnimationUtils.loadAnimation(mContext,
        R.anim.slide_down);
slideUp = AnimationUtils.loadAnimation(mContext,
        R.anim.slide_up);
orbhu.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        ulayout.setAnimation(slideUp);
        ulayout.setVisibility(View.VISIBLE);
        backgroundview.setVisibility(View.VISIBLE);
    }
});
backgroundview.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        ulayout.setAnimation(slideDown);
        backgroundview.setVisibility(View.GONE);
        ulayout.setVisibility(View.GONE);
    }
});

Answer 1

请尝试使用以下代码

slideDown = AnimationUtils.loadAnimation(mContext,
        R.anim.slide_down);
slideUp = AnimationUtils.loadAnimation(mContext,
        R.anim.slide_up);
orbhu.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        ulayout.startAnimation(slideUp);
        ulayout.setVisibility(View.VISIBLE);
        backgroundview.setVisibility(View.VISIBLE);
    }
});
backgroundview.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        ulayout.startAnimation(slideDown);
        backgroundview.setVisibility(View.GONE);
        ulayout.setVisibility(View.GONE);
    }
});

动画仅在第一次出现

1 个答案: