关于分配给 id<UITextFieldDelegate> 的警告当我遵守协议时

问题描述

我的视图控制器符合 UITextFieldDelegate，但是当我尝试将文本字段的 .delegate 字段设置为 self 时，我收到警告:

My view controller is conforming to UITextFieldDelegate, yet when I try and set the .delegate field of my text field to self, I get the warning:

从不兼容的类型‘AddReviewViewController *const __strong’分配给‘id’"

我的头文件是这样的:

#import <UIKit/UIKit.h>

@interface AddReviewViewController : UIViewController <UITextFieldDelegate>
@property (nonatomic) int storeID;

@end

如您所见，我已声明它符合协议.在 .m 文件中，我有这个:

So as you can see, I have it declared to conform to the protocol. In the .m file, I have this:

@property (strong, nonatomic) IBOutlet UITextView *reviewTextView;

在@interface AddReviewViewController()"部分

in the section "@interface AddReviewViewController ()"

然后，在 viewDidLoad 中:

Then, in viewDidLoad I do:

_reviewTextView.delegate = self;

这就是我收到警告的地方.我试过清理和重建，并重新启动 XCode.我在这里遗漏了一些明显的东西吗?我遵守协议....

That's where I get the warning. I've tried cleaning and rebuilding, and restarting XCode. Am I missing something obvious here? I'm conforming to the protocol....

感谢您的快速帮助.在我睡眠不足的状态下，我不断地重新阅读东西并发誓这就是我正在做的事情，但是是的，打错了.几分钟内我无法标记答案，但问题已解决，谢谢！

Thanks for the quick help. In my sleep deprived state I kept re-reading things and swore that's what I was doing but yup, typo. I can't mark an answer for a few minutes, but problem solved, thanks!

推荐答案

在你的标题中有 UITextFieldDelegate然后你声明UITextView.这两者有很大的不同.

In your header you have UITextFieldDelegateAnd then you declare UITextView. There's a big difference between those two.

编辑

@interface AddReviewViewController : UIViewController <UITextFieldDelegate>

到

@interface AddReviewViewController : UIViewController <UITextViewDelegate>

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