添加适配了Android7.0 代码

[jiaweio]

if (Build.VERSION.SDK_INT != 24) {
mPopupWindow.showAsDropDown(v);
} else {//Android 7.0 显示位置出现问题 兼容7.0
int[] location = new int[2];
v.getLocationOnScreen(location);
int x = location[0];
int y = location[1];
mPopupWindow.showAtLocation(v, Gravity.NO_GRAVITY, 0, y + v.getHeight());
}

[JayFang1993]

@DJwei 欢迎提Merge Request