//獲取View的ViewController
- (UIViewController )viewController {
//便利
for (UIView next = [self superview]; next; next = next.superview) {
//響應者鏈
UIResponder *nextResponder = [next nextResponder];
//判斷View所述的ViewController
if ([nextResponder isKindOfClass:[UIViewController class]]) {
return (UIViewController *)nextResponder;
}
}
return nil;
}
原理:
通過 便利 響應者鏈 判斷 是否是該 View 的VIewControll
