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在MFMailComposeViewController不能按取消或发送按钮后，予以驳回。我已经添加MFMailComposeViewControllerDelegate了课程，但是仍然无法正常工作吗？

这是我的代码：

func sendEmail() {
    let MailVC = MFMailComposeViewController()
    MailVC.mailComposeDelegate = self
    MailVC.setToRecipients(["\(emailLabel?.text)"])
    MailVC.setSubject("Set your subject here!")
    MailVC.setMessageBody("Hello this is my message body!", isHTML: false)
    // Present the view controller modally.
    self.present(MailVC, animated: true, completion: nil)
}

func mailComposeController(controller: MFMailComposeViewController,
                           didFinishWithResult result: MFMailComposeResult, error: NSError?) {
    // Dismiss the mail compose view controller.
    controller.dismiss(animated: true, completion: nil)
}

我在收到我提出的电子邮件时遇到了困难.

电子邮件打开很好,但一旦打开它就不会关闭mailComposeController:mailer didFinishWithResult:结果错误:错误处理程序永远不会被调用.

据我所知,我已经掌握了所有可以做到这一点.

任何有关我能看到什么的想法？

以下是我如何提出电子邮件:

-(IBAction)emailButtonPressed 
{

NSString*text = @"我的电子邮件文本";

 MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
 mailer.delegate = self;

 [mailer setSubject:@"Note"];
 [mailer setMessageBody:text isHTML:NO];
 [self presentModalViewController:mailer animated:YES];
 [mailer release];
}

然后在类中我有这个代码来处理close(但它永远不会被调用):

-(void)mailComposeController:(MFMailComposeViewController *)mailer didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
 [self becomeFirstResponder];
 [mailer dismissModalViewControllerAnimated:YES];
}

我的头文件定义为:

#import <UIKit/UIKit.h>
#import <MessageUI/MessageUI.h>
#import <MessageUI/MFMailComposeViewController.h>

@interface myViewController : UIViewController <UIActionSheetDelegate, UIAlertViewDelegate, MFMailComposeViewControllerDelegate, UINavigationControllerDelegate>

谢谢

Iphaaw