Question

当用户使用MFMailComposeViewController从iPhone发送成功邮件时，我需要显示警告消息。

我尝试使用didFinishWithResult委托但是它要求发送和取消然后我们如何确定我们成功发送消息？

Answer 1

Try this code

-(IBAction)Btn_EmailPressed:(id)sender{
    if (![MFMailComposeViewController canSendMail]) {
        UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Alert" message:@"Email cannot be configure." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];
        [alert release];
        return;
    }else {
        picker = [[MFMailComposeViewController alloc] init];
        picker.mailComposeDelegate=self;
        [picker setToRecipients:nil];
                [picker setSubject:@"Email"];
                [picker setMessageBody:nil isHTML:NO];
                NSArray *toRecipients = [[NSArray alloc] initWithObjects:lblSite.text,nil];
                [picker setToRecipients:toRecipients];
                [self presentModalViewController:picker animated:YES];
            }
}


- (void)mailComposeController:(MFMailComposeViewController*)mailController didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
    NSString *msg1;
    switch (result)
    {
        case MFMailComposeResultCancelled:
            msg1 =@"Sending Mail is cancelled";
            break;
        case MFMailComposeResultSaved:
            msg1=@"Sending Mail is Saved";
            break;
        case MFMailComposeResultSent:
            msg1 =@"Your Mail has been sent successfully";
            break;
        case MFMailComposeResultFailed:
            msg1 =@"Message sending failed";
            break;
        default:
            msg1 =@"Your Mail is not Sent";
            break;
    }
    UIAlertView *mailResuletAlert = [[UIAlertView alloc]initWithFrame:CGRectMake(10, 170, 300, 120)];
    mailResuletAlert.message=msg1;
    mailResuletAlert.title=@"Message";
    [mailResuletAlert addButtonWithTitle:@"OK"];
    [mailResuletAlert show];
    [mailResuletAlert release];
    [self dismissModalViewControllerAnimated:YES];  
}

Answer 2

我遇到了这种方法的麻烦。在我的应用程序中，我使用MFMailComposeViewController作为电子邮件，MFMessageComposeViewController用于SMS消息，并且didFinishWithResult例程使用了与上述类似的方法，其中在VC被解除之前显示警报。

如果您发送短信，下次您尝试发送电子邮件时，光标将不会显示在电子邮件正文中，您也无法选择任何文字。同样在调试器中我得到“wait_fences：未能收到回复：10004003”。

我最终刚从应用程序的这一部分删除了警报视图，问题就消失了。如果有人对此问题有解决方案，我会很高兴听到它。

Answer 3

你应该为委托对象实现这个方法......

– mailComposeController:didFinishWithResult:error:

请查看此内容以获取更多详细信息... http://developer.apple.com/library/ios/#documentation/MessageUI/Reference/MFMailComposeViewControllerDelegate_protocol/Reference/Reference.html#//apple_ref/occ/intf/MFMailComposeViewControllerDelegate

Answer 4

(void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error

使用此委托，在此MFMailComposeResult内部是一个枚举

enum MFMailComposeResult {
   MFMailComposeResultCancelled,
   MFMailComposeResultSaved,
   MFMailComposeResultSent,
   MFMailComposeResultFailed
};
typedef enum MFMailComposeResult MFMailComposeResult;

Answer 5

答案的快速版本。

       func sendMail(){
                if MFMailComposeViewController.canSendMail() {
                    let mail = MFMailComposeViewController()
                    mail.mailComposeDelegate = self
                    mail.setToRecipients(["hello@gmail.com"])
                    present(mail, animated: true)
                } else {
                    showSendMailErrorAlert()
                }
            }

        func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
            switch result {
                case .cancelled: print("Sending Mail is cancelled")
                case .sent : print("Your Mail has been sent successfully")
                case .saved : print("Sending Mail is Saved")
                case .failed : print("Message sending failed")
            }
            controller.dismiss(animated: true, completion: nil)
        }

        func showSendMailErrorAlert() {
            showAlert(title: "Could Not Send Email", message: "Your device could not send e-mail.  Please check e-mail configuration and try again.")
        }

从iPhone中的MFMailComposeViewController发送邮件时显示成功警报消息

5 个答案: