setVisibility（View.GONE）不会消失视图

问题描述

在我的活动，我有一个启动按钮，并单击时应该淡出，最后由 setVisibility（View.GONE）消失

In my activity, I have a start button, and when that's clicked it should fade out and finally disappear by setVisibility(View.GONE)

问题是可见性设置为GONE不消失的观点，它仍然是可见的。我故意做出的观看动画淡出到0.1（而不是0），我可以看到它在我打过电话后连背景 setVisibility（View.GONE）就可以了。

The problem is setting visibility to GONE doesn't disappear the view, it's still visible. I've purposefully made the view animation fade out to 0.1 (instead of 0) and I can see it in the background even after I've called setVisibility(View.GONE) on it.

淡出动画 anim_fade_out.xml 是：

<?xml version="1.0" encoding="utf-8"?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator"
    android:fillAfter="true" android:fillEnabled="true">

        <alpha
            android:fromAlpha="1.0"
            android:toAlpha="0.1"
            android:duration="200" />
</set>

该方法 showTimer（）：

private void showTimer() {
    final LinearLayout startButtonArea = (LinearLayout)findViewById(R.id.startButtonArea);

    Animation animFadeOut = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.anim_fade_out);

    startButtonArea.startAnimation(animFadeOut);

    animFadeOut.setAnimationListener(new AnimationListener() {
        @Override
        public void onAnimationEnd(Animation animation) {
            startButtonArea.setVisibility(View.GONE);
            Log.d("Animation ended","startButtonArea SHOULD BE GONE BUT IT ISN'T");
        }
        @Override
        public void onAnimationRepeat(Animation animation) {}
        @Override
        public void onAnimationStart(Animation animation) {}
    });

}

要重申，我知道，在动画的最后alpha是0.1（这将是0通常情况下），但我想确认的看法是真的 GONE ，它不是。

To reiterate, I know that the end alpha of the animation is 0.1 (it would be 0 usually) but I want to confirm that the view is really GONE and it isn't.

推荐答案

由于您的 fillAfter 是真实的，动画的 onAnimationEnd后设置属性被调用。您可以更改 fillAfter 为假，像这样做：

Because your fillAfter is true, the animation sets the properties after your onAnimationEnd is called. You can either change fillAfter to false, or do it like this:

@Override
public void onAnimationEnd(Animation animation) {
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            startButtonArea.setVisibility(View.GONE);
            Log.d("Animation ended","startButtonArea SHOULD BE GONE BUT IT ISN'T");
        }
    }, 0);
}

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