[英]How to implement a custom protocol
In this part of my code I get a warning message saying it doesn't implement the custom protocol I made. 在代码的这一部分中,我收到一条警告消息,提示它未实现我制定的自定义协议。
detailViewController.delegate = self;
How do I implement the protocol? 如何实施协议?
Then when I run the program it crashes saying 然后,当我运行程序时,它崩溃了,
'-[DetailViewController setDelegate:]: unrecognized selector sent to instance 0x6a1c450' '-[DetailViewController setDelegate:]:无法识别的选择器已发送到实例0x6a1c450'
Declare your class like this: 像这样声明您的课程:
@interface DetailViewController : UIViewController <MyProtocol> {
// Class stuff
}
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