问题描述
对不起，我无法为标题制定一个简短的问题..
如果我是一个类的子类使用委托协议和属性，我的委托仍然需要实现超类的委托协议，还是我必须为子类定义一个新的委托协议？
In case i subclass a class with a delegate protocol and property, does my delegate still need to implement the delegate protocol of the superclass, or do i have to define a new one for the subclass?
在我的情况下，我的子类 UIImagePickerController ：
In my case I subclassed UIImagePickerController:
[(UIImagePickerController *)self.myUIImagePickerControllerSubclassInstance setDelegate:self];
当我尝试将其委托设置为 self ，从某些视图控制器我收到以下警告：
When I try to set its delegate to self, from some view controller I get the following warning:
推荐答案
您的代表需要遵守 UIImagePickerController 属性声明：
Your delegate needs to comply with UIImagePickerController property declaration:
@property（非原子，赋值）id< UINavigationControllerDelegate，UIImagePickerControllerDelegate>委托
因此，尝试将< UIImagePickerControllerDelegate> 添加到您的子类接口：
So, try adding <UIImagePickerControllerDelegate> to your subclass interface:
@interface YourPicker : UIImagePickerController <UIImagePickerControllerDelegate>
...
@end
可能你需要 UINavigationControllerDelegate 并实施强制方法（如果有的话）。
And probably you'll need UINavigationControllerDelegate and implement mandatory methods, if any.
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