ios - 调用 InApp 邮件命令时应用程序崩溃

Question

当我通过 UIActionSheet 按钮调用消息撰写表时，出现以下错误。抱歉，这些对我来说意义不大 - 仍在学习:-)

有人能帮忙吗？

这些是出现问题的根源。

这是在日志中:

2012-06-16 19:10:43.437 Multi Web[2665:4013] XPCProxy received bad message: target did not supply method signature for bodyFinishedDrawing 2012-06-16 19:10:43.489 Multi Web[2665:907] _serviceViewControllerReady:error: Error Domain=XPCObjectsErrorDomain Code=3 "The operation couldn’t be completed. (XPCObjectsErrorDomain error 3.)"

干杯杰夫

        if ([MFMailComposeViewController canSendMail])
    {
        MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
        mailer.mailComposeDelegate = self;

        NSString *subject = [[NSString alloc] initWithFormat:@"Multi Web - Sending %@.txt", _documentFile];

        [mailer setSubject:subject];

        // Attach an image to the email
        NSString *pathFile01 = [NSString stringWithFormat:_documentTXTPath];
        NSURL *pdfURLFile01 =  [NSURL URLWithString:pathFile01];
        NSData *pdfDataFile01 = [NSData dataWithContentsOfURL:pdfURLFile01];
        NSString *fileName = [[NSString alloc] initWithFormat:@"%@.txt", _documentFile];
        [mailer addAttachmentData:pdfDataFile01 mimeType:@"application/txt" fileName:fileName];

        NSString *emailBody = 
       @"Hi,<br><br>Please find attached the note exported from Multi Web.<br/><br/>Thanks you for using the app.<br/><br/>Kind Regards,<br/>Multi Web Team.";


        [mailer setMessageBody:emailBody isHTML:YES];

        [self presentModalViewController:mailer animated:YES];
    }

    // Remove the mail view
    [self dismissModalViewControllerAnimated:YES];



- (void)mailComposeController:(MFMailComposeViewController*)controller  didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
 {
 switch (result)
 {
    case MFMailComposeResultCancelled:
        NSLog(@"Mail cancelled: you cancelled the operation and no email message was queued.");
        break;
    case MFMailComposeResultSaved:
        NSLog(@"Mail saved: you saved the email message in the drafts folder.");
        break;
    case MFMailComposeResultSent:
        NSLog(@"Mail send: the email message is queued in the outbox. It is ready to send.");
        break;
    case MFMailComposeResultFailed:
        NSLog(@"Mail failed: the email message was not saved or queued, possibly due to an error.");
        break;
    default:
        NSLog(@"Mail not sent.");
        break;
}

// Remove the mail view
[self dismissModalViewControllerAnimated:YES];

Answer 1

正确答案是去掉

[self dismissModalViewControllerAnimated:YES] 

就在 presentModalViewController 方法之后。

您正在崩溃，因为您在呈现模态视图 Controller 后不久将其关闭，并尝试在回调委托(delegate)中再次将其关闭(已被释放)。

您可以在我的帖子中阅读有关如何发送应用内电子邮件的信息。

http://blog.mugunthkumar.com/coding/iphone-tutorial-in-app-email/