问题描述
限时送ChatGPT账号..我想构建一个 TextViews 动画,它在完成后立即重复.
I want to build an animation of TextViews, which repeats itself just after completion.
对于我想要动画的每个视图,我使用以下代码
For each View I want to animate, I use the following piece of code
final float oldX = v.getX();
final float newX = v.getX() - (float)totalWidth;
final AnimatorListenerAdapter listener = new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
v.setX(oldX);
animFinished = true;
//This line won't compile
//v.animate().setDuration(animDuration).setInterpolator(newsInterpolator)
// .setListener(listener).x(newX);
}
};
v.animate().setDuration(animDuration).setInterpolator(newsInterpolator)
.setListener(listener).x(newX);
我试图将最后一段代码放入 onAnimationEnd,但 Java 不会编译,因为它认为对象侦听器未初始化.此外,我不认为这种递归"动画调用是一个好的解决方案,这是我想到的第一件事.我怀疑有一种简单而合理的方法可以实现循环属性动画,但我找不到它,所以我转向这里寻求帮助.
I tried to place the last piece of code into the onAnimationEnd, but Java will not compile since it considers the object listener as not initialized. Moreover, I don't think that this "recursive" animation invocation is a good solution, it was the first thing which came to my mind. I am suspicious that there is a simple and sound way to implement looping property animation, but I failed to locate it, so I turned here for help.
提前致谢
推荐答案
好吧,我又要自己回答了.
Well, I am going to answer myself again.
TranslateAnimation 类有关于重复动画的方法,所以我用它代替了 ViewPropertyAnimator.
TranslateAnimation class has methods about repeating the animation, so I used it instead of ViewPropertyAnimator.
以下代码似乎有效:
long duration = 1000* ((long)totalWidth / newsScrollSpeed);
System.out.println("totalWidth="+totalWidth);
TranslateAnimation anim = new TranslateAnimation(0,-totalWidth,0,0);
anim.setInterpolator(linearInterpolator);
anim.setDuration(duration);
anim.setRepeatCount(TranslateAnimation.INFINITE);
anim.setRepeatMode(TranslateAnimation.RESTART);
for(i=0;i<this.getChildCount();i++)
{
View v = this.getChildAt(i);
if(v.getId() == R.id.yuruyen_yazi)
{
continue;
}
v.startAnimation(anim);
}
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