#import "UIView+UIViewController.h"
@implementation UIView (UIViewController)
-(UIViewController *)viewController{
UIResponder *next = self.nextResponder;
while(next !=nil){
if([next isKindOfClass:[UIViewController class]]){
return (UIViewController *)next;
}
next = next.nextResponder;
}
return nil;
}
@end
这是类别,通过代码可以看出这个类别的作用应该是通过 View 来拿到其所在控制器的对象,即 view.viewController