public void startAnimation01(){
  animators.clear();
  //创建四个动画，每个动画逆时针旋转180度
  Animator animator01 = ObjectAnimator.ofFloat(imageView01,"RotationY",0,-180);
  Animator animator02 = ObjectAnimator.ofFloat(imageView02,"RotationY",0,-180);
  Animator animator03 = ObjectAnimator.ofFloat(imageView03,"RotationY",0,-180);
  Animator animator04 = ObjectAnimator.ofFloat(imageView04,"RotationY",0,-180);
  animators.add(animator01);
  animators.add(animator02);
  animators.add(animator03);
  animators.add(animator04);
  //循环中统一处理事件监听，动画结束时更换每个view的背景
  for(int i=0;i<animators.size();i++){
   final int finalI = i;
   animators.get(i).addListener(new Animator.AnimatorListener() {
    @Override
    public void onAnimationStart(Animator animation) {

    }

    @Override
    public void onAnimationEnd(Animator animation) {
     //更换背景
     imageViews.get(finalI).setBackgroundColor(Color.parseColor("#FFAEB9"));
    }

    @Override
    public void onAnimationCancel(Animator animation) {

    }

    @Override
    public void onAnimationRepeat(Animator animation) {

    }
   });
  }
  AnimatorSet set = new AnimatorSet();
  //集合中的动画会顺序执行
  set.playSequentially(animators);
  set.setStartDelay(200);
  set.setDuration(300);
  set.start();
 }

public void startAnimation02(){
  for (int i=0;i<animators01.size();i++){
   final int finalI = i;
   animators01.get(i).setListener(new Animator.AnimatorListener() {
    @Override
    public void onAnimationStart(Animator animation) {

    }

    @Override
    public void onAnimationEnd(Animator animation) {
     imageViews.get(finalI).setBackgroundColor(Color.parseColor("#FFAEB9"));
    }

    @Override
    public void onAnimationCancel(Animator animation) {

    }

    @Override
    public void onAnimationRepeat(Animator animation) {

    }
   });
  }
 }