ObjectAnimator animator1 = ObjectAnimator.ofFloat(viewBG, alpha, 1, 0);一些手机会出现的问题

把透明度从1变成0在快变到0的时候会闪一下，是因为透明度突然变成1了，这不是所有手机都会有这个问题

currentValue: 3.2001734E-4
currentValue: 5.376339E-5
currentValue: 3.993511E-6
currentValue: 0.0
currentValue: 0.0

处理方案

ObjectAnimator animator1 = ObjectAnimator.ofFloat(viewBG, "alpha", 1, 0);//X轴平移旋转 animator1.setStartDelay(470);
animator1.setDuration(300);
animator1.setInterpolator(new SmoothInterpolator());
animator1.start();animator1.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {@Override
    public void onAnimationUpdate(ValueAnimator animation) {float currentValue = (float) animation.getAnimatedValue();if (currentValue > 0.002f) {viewBG.setAlpha(currentValue);} else {//如果太小直接设成0就好了viewBG.setAlpha(0);}}
});