ObjectAnimator动画的使用

1.旋转

  // 旋转360度
                ObjectAnimator animator1 = ObjectAnimator.ofFloat(tv, "rotation", 0f, 360f);//旋转360度
                animator1.setRepeatCount(-1);//无限循环
                //animator1.setDuration(2000);//设置持续时间
                //animator1.setRepeatCount(1000);//重复次数
                // animator1.start();//动画开始

2.放大缩小

  ObjectAnimator animator = ObjectAnimator.ofFloat(tv, "scaleY", 1, 6, 1);//沿着Y轴放大
                ObjectAnimator animator2 = ObjectAnimator.ofFloat(tv, "scaleX", 1, 6, 1);//沿着X轴放大
           

3.平移

 ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(head, "translationX", 0.0f, 350.0f, 0.0f);//沿着x轴平移
 ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(head, "translationY", 0.0f, 350.0f, 0.0f);//沿着Y轴平移

4.动画集合

   AnimatorSet bouncer = new AnimatorSet();//创建一个动画集合类
                bouncer.play(animator).with(animator2);//play:先播放animator with:同时播放animator2 after:在某动画后播放 before:再某动画前播放
                bouncer.setDuration(2000);//持续时间
                bouncer.start();//开始动画

5.灰度

 ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(head, "alpha", 1.0f, 0.3f, 1.0F);