Android 配合NestedScrollView 上滑显示 下滑隐藏 底部功能模块

private boolean isShow=true;

nestedScrollView.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
@Override
public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
//上滑 并且 正在显示底部栏
if (scrollY - oldScrollY > 0 && isShow) {
isShow = false;
//将Y属性变为底部栏高度  (相当于隐藏了)
postDetPlLayout.animate().translationY(postDetPlLayout.getHeight());
} else if (scrollY - oldScrollY < 0 && !isShow) {
isShow = true;
postDetPlLayout.animate().translationY(0);
}
}
});