ios - Xcode4.3 UIActionSheet 导致错误信息

Question

该应用程序在测试时运行良好，但在 delegate:self 旁边我得到...

Sending 'ViewController *const __strong' to parameter of incompatible type 'id< UIActionSheetDelegate>'

非常感谢任何帮助，因为我已经处理了好几天了!

我的 Viewcontroller.h 是...

#import <UIKit/UIKit.h>
#import <Social/Social.h>

#import "Accounts/Accounts.h"
#import <MessageUI/MessageUI.h>


@interface ViewController : UIViewController<MFMailComposeViewControllerDelegate>

{
    UIAlertView *objresponseAlert;
}
@property (weak, nonatomic) IBOutlet UITextView *myTextView;

- (IBAction)emailButton:(id)sender;
@end

在我的 ViewController.m 中我有......

- (IBAction)emailButton:(id)sender {    
    UIActionSheet *actionsheet = [[UIActionSheet alloc]
                                  initWithTitle:@"Title"
                                  delegate:self
                                  cancelButtonTitle:@"Cancel"
                                  destructiveButtonTitle:nil
                                  otherButtonTitles:@"Email", nil];
    [actionsheet showInView:self.view];
}

Answer 1

这很完美!

// Make Class conform to UIActionSheet delegate
@interface ViewController : UIViewController<MFMailComposeViewControllerDelegate,UIActionSheetDelegate>