如何运行一系列动画？动画集让我失望

发布于 2024-10-09 19:19:26 字数 543 浏览 5 评论 0原文

我有一个自定义视图Dial。此视图有一个自定义动画 DialAnimation，它是作为 Dial 的嵌套类编写的。下面是我的 Activity 中的代码，它实例化 Dial 并尝试在其上执行一系列动画。运行代码时，屏幕上只能看到其中一个动画。我在这里缺少什么？

Dial dial = (Dial) findViewById(R.id.dial);
DialAnimation anim1 = dial.new DialAnimation(0, 90, 3000);
DialAnimation anim2 = dial.new DialAnimation(180, 360, 3000);
anim2.setStartOffset(3500);

AnimationSet set = new AnimationSet(false);
set.addAnimation(anim1);
set.addAnimation(anim2);
dial.startAnimation(set);

原文

I have a custom view Dial. This view has a custom animation DialAnimation that was written as a nested class of Dial. Below is the code from my Activity that instantiates Dial and attempts to perform a sequence of animations on it. When the code is run, only one of the animations is seen onscreen. What am I missing here?

Dial dial = (Dial) findViewById(R.id.dial);
DialAnimation anim1 = dial.new DialAnimation(0, 90, 3000);
DialAnimation anim2 = dial.new DialAnimation(180, 360, 3000);
anim2.setStartOffset(3500);

AnimationSet set = new AnimationSet(false);
set.addAnimation(anim1);
set.addAnimation(anim2);
dial.startAnimation(set);

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趴在窗边数星星i 2024-10-16 19:19:26

一种方法是在第一个动画上设置一个 AnimationListener 并重写 onAnimationEnd() 以使其启动序列中的下一个动画。那看起来像这样：

animation1Listener = new Animation.AnimationListener() {

            @Override
            public void onAnimationStart(Animation animation) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onAnimationRepeat(Animation animation) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                 dial.startAnimation(animation2)
            }
}

animation1.setAnimationListener(animation1Listener);
dial.startAnimation(animation1);

one way to do it would be to set an AnimationListener on the first animation and override the onAnimationEnd() to make it start the next animation in the sequence. That would look something like this:

animation1Listener = new Animation.AnimationListener() {

            @Override
            public void onAnimationStart(Animation animation) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onAnimationRepeat(Animation animation) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                 dial.startAnimation(animation2)
            }
}

animation1.setAnimationListener(animation1Listener);
dial.startAnimation(animation1);

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