分享两个通过cell获取controller的方法

重用cell时经常遇到

1.

//        for (UIView* next = [self superview]; next; next = next.superview) {

//            UIResponder* nextResponder = [next nextResponder];

//            if ([nextResponder isKindOfClass:[UIViewController class]]) {

//                NSLog(@"1212%@",(UIViewController*)nextResponder);

//

//            }

//        }

2.UITableView *tv = (UITableView *) self.superview;

UIViewController*vc = (UIViewController *) tv.dataSource;