tvTest = findViewById(R.id.tvTest);
        //把tvTest沿y轴平行移动500个单位,时间为2000毫秒，translationY()是移动到哪里
        //通过View自带的方法实现属性动画的功能
        tvTest.animate().translationYBy(500).setDuration(2000).start();
        //补间动画控件的属性并没有改变，而属性动画后控件的属性实质发生了变化
        //scaleXBy 缩放 rotationYby 旋转  translationYby      alpha 渐变
        tvTest.animate().alpha(0).setDuration(2000).start();


        ValueAnimator valueAnimator = ValueAnimator.ofInt(0,100);
        valueAnimator.setDuration(2000);
        valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator animation) {
                //valueAnimator实际的值 1 - 100
                Log.d("aaa",animation.getAnimatedValue().toString());
                //动画的进度 0 - 1
                Log.d("aaa",String.valueOf(animation.getAnimatedFraction()));
            }
        });
        valueAnimator.start();


        ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(tvTest,"translationY",0,500);
        objectAnimator.setDuration(2000);
        objectAnimator.start();