给UIView添加方法:
- (UIViewController*)viewController { for (UIView* next = [self superview]; next; next = next.superview) { UIResponder* nextResponder = [next nextResponder]; if ([nextResponder isKindOfClass:[UIViewController class]]) { return (UIViewController*)nextResponder; } } return nil; }
实现原理:
通过UIView对象获取该对象所属的UIViewController可以使用UIResponder的nextResponder方法获得,UIView类继承于UIResponder,因此可以直接使用。? 根据文档描述,如果View有view controller,则通过nextResponder方法返回,如果没有则返回superview。?下面是英文原文:?if the view has a view controller, it is returned by nextResponder.?If there is no view controller, the method will return the superview? 相关代码如下:遍历该View的树形结构,获取到其所属的ViewController
如何通过UIView对象获取该对象所属的UIViewController
原文:http://www.cnblogs.com/zhangjiayi/p/5022481.html