UIView 中的一些小特性

self.clipsToBounds = YES;   //隐藏子视图超出部分  属性默认为 NO

- (UIViewController *)viewController
{
UIViewController *viewController = nil;
UIResponder *next = self.nextResponder;
while (next)
{
if ([next isKindOfClass:[UIViewController class]])
{
viewController = (UIViewController *)next;
break;
}
next = next.nextResponder;
}
return viewController;
}

更新中。。。。