判断两个控件在同一个Window上是否有重叠

//对UIView写分类
- (BOOL)intersectWithView:(UIView *)view;

- (BOOL)intersectWithView:(UIView *)view
{
    UIWindow *window = [UIApplication sharedApplication].keyWindow;
    CGRect selfRect = [self convertRect:self.bounds toView:window];
    CGRect viewRect = [view convertRect:view.bounds toView:window];
    return CGRectIntersectsRect(selfRect, viewRect);
}
//对UIView写分类
- (BO