Android ScrollView向上平移的属性动画底部会出现空白的情况，而不会自动向上滑动

ObjectAnimator animator = ObjectAnimator.ofFloat(mTitle, View.TRANSLATION_Y, -height);
ObjectAnimator animator1 = ObjectAnimator.ofFloat(mContentLayout, View.TRANSLATION_Y, 0, -height);

animatorSet.play(animator).with(animator1);
animatorSet.setDuration(500);

如题，mTitle是一个TextView,mContentLayout是一个铺满的ScrollView，但是向上平移的时候底部出现了空白，ScrollView却会向上平移

http://blog.csdn.net/huangbiao86/article/details/7388632