PopWindow解决Android7.0调用showAsDropDown方法失效问题
for example
if (Build.VERSION.SDK_INT < 24) {
pop.showAsDropDown(view);
} else {
// 适配 android 7.0
int[] location = ViewUtil.getViewPositionByScreen(view);
int x = location[0];
int y = location[1];
pop.showAtLocation(view, Gravity.NO_GRAVITY, 0, y + view.getHeight());
}
