属性动画简单的使用

//透明度起始为1，结束时为0 透明

ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "alpha", 1f, 0f, 1f);
animator.setDuration(2000);
animator.start();

//360度旋转

ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "rotation", 0f, 360f, 0f);
animator.setDuration(2000);
animator.start();

//左右移动

ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "translationX", 0f, -300f, 0f);
animator.setDuration(2000);
animator.start();

//上下移动

ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "translationY", 0f, -300f, 0f);
animator.setDuration(2000);
animator.start();

//左右缩放

ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "scaleX", 1f, 2f, 1f);
animator.setDuration(2000);
animator.start();

//上下缩放

ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "scaleY", 1f, 2f, 1f);
animator.setDuration(2000);
animator.start();

//组合动画

//沿x轴放大ObjectAnimator scaleXAnimator = ObjectAnimator.ofFloat(imageView, "scaleX", 1f, 2f, 1f);

//沿y轴放大ObjectAnimator scaleYAnimator = ObjectAnimator.ofFloat(imageView, "scaleY", 1f, 2f, 1f);

//移动ObjectAnimator translationXAnimator = ObjectAnimator.ofFloat(imageView, "translationX", 0f, 200f, 0f);

//透明动画ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "alpha", 1f, 0f, 1f);

//动画组合的集合

AnimatorSet set = new AnimatorSet();

//同时沿X,Y轴放大，且改变透明度，然后移动

set.play(scaleXAnimator).with(scaleYAnimator).with(animator).before(translationXAnimator);

//都设置3s，也可以为每个单独设置

set.setDuration( 3000);set.start();

//监听事件

//添加监听事件 set.addListener( new Animator.AnimatorListener() { 

  @Override public void onAnimationStart(Animator animation) { 

  //动画开始的时候调用 

 } 

  @Override public void onAnimationEnd(Animator animation) { 

  //画结束的时候调用 } 

  @Override public void onAnimationCancel(Animator animation) { 

  //动画被取消的时候调用 } 

  @Override public void onAnimationRepeat(Animator animation) {

  //动画重复执行的时候调用 } });

作者：带心情去旅行
链接：https://www.jianshu.com/p/d23f58f4368d
來源：简书
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