xcode 找不到“MFMailComposeViewControllerDelegate”的协议声明；你的意思是“UIPageViewControllerDelegate”？
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Cannot find protocol declaration for 'MFMailComposeViewControllerDelegate'; did you mean 'UIPageViewControllerDelegate'?
提问by user2777252
This code :
这段代码：
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <MessageUI/MessageUI.h>
#import "MessageComposerViewController.h"
#import <MessageUI/MFMailComposeViewController.h>
@interface MapViewController : UIViewController <MFMailComposeViewControllerDelegate> // Add the delegate
- (IBAction)showEmail:(id)sender;
{
IBOutlet MKMapView *mapView;
}
@property (nonatomic, retain) MKMapView *mapView;
@end
This problem or error :
这个问题或错误：
Cannot find protocol declaration for 'MFMailComposeViewControllerDelegate'; did you mean 'UIPageViewControllerDelegate'? for this lign : #import "MessageComposerViewController.h"
Expected identifier or '(' for this lign : @interface MapViewController : UIViewController // Add the delegate and this lign : {
找不到“MFMailComposeViewControllerDelegate”的协议声明；你的意思是“UIPageViewControllerDelegate”？对于这个灯：#import "MessageComposerViewController.h"
预期标识符或 '(' 这个 lign : @interface MapViewController : UIViewController // 添加委托和这个 lign : {
Thanks for advance. :)
感谢您的提前。:)
采纳答案by Hemant Chittora
Try This,
尝试这个，
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <MessageUI/MessageUI.h>
#import "MessageComposerViewController.h"
#import <MessageUI/MFMailComposeViewController.h>
@interface MapViewController : UIViewController <MFMailComposeViewControllerDelegate,UINavigationControllerDelegate> {
IBOutlet MKMapView *mapView;
}
- (IBAction)showEmail:(id)sender;
@property (nonatomic, retain) MKMapView *mapView;
@end
回答by Wilson Toussaint Jr.
If you do the above and still see the warning in Xcode, try building or building & running your app. Sometimes these warnings linger after you've addressed the problem and are cleared out by a compilation cycle.
如果您执行上述操作后仍然在 Xcode 中看到警告，请尝试构建或构建并运行您的应用程序。有时，在您解决问题后，这些警告仍然存在，并被编译周期清除。
回答by Mion Kovalski
I encountered the same problem today coding an app for ios8. First thing that I did was re-add the framework, but it didn't help. The problem was I ignored libAWDProtobufFacetimeiMessage - a protocol buffer file. I'm no professional to guess why, but when I added both buffer and the framework itself, the error message disappeared. I have posted a screenshot here. Hope my answer helps anyone looking here in the future.
我今天在为 ios8 编写应用程序时遇到了同样的问题。我做的第一件事是重新添加框架，但没有帮助。问题是我忽略了 libAWDProtobufFacetimeiMessage - 一个协议缓冲区文件。我不是专业人士来猜测原因，但是当我同时添加缓冲区和框架本身时，错误消息消失了。我在这里发布了一个屏幕截图。希望我的回答可以帮助任何将来看这里的人。
