ios - 找不到 'MFMailComposeViewControllerDelegate' 的协议(protocol)声明；你是说 'UIPageViewControllerDelegate' 吗？

Question

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

这个问题或错误:

• 找不到“MFMailComposeViewControllerDelegate”的协议(protocol)声明；您是指“UIPageViewControllerDelegate”吗？对于这个 lign:#import "MessageComposerViewController.h"

• 预期标识符或“(”对于这个 lign:@interface MapViewController:UIViewController//添加委托(delegate)还有这个灯:{

感谢提前。 :)

Answer 1

试试这个，

    #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