iOS中如何根据UIView获取所在的UIViewController

原理

Responder Chain 事件的响应者链 大概的传递规则就是从视图顶层的UIView向下到UIViewController再到RootViewController再到Window最后到Application。

/**

*  @brief  找到当前view所在的viewcontroler

*/

- (UIViewController *)jk_viewController

{

UIResponder *responder = self.nextResponder;

do {

if ([responder isKindOfClass:[UIViewController class]]) {

return (UIViewController *)responder;

}

responder = responder.nextResponder;

} while (responder);

return nil;

}