在ios中发送崩溃报告日志文件

Question

我想允许用户发送应用程序崩溃日志文件的电子邮件。问题是，从我的设备，我能够发送日志文件作为电子邮件的附件。但是从某些设备我收到电子邮件但没有附加的日志文件。 我使用以下代码发送电子邮件日志文件。

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

        mailer.mailComposeDelegate = self;

        [mailer setSubject:@"Application Logs File"];

        NSArray *toRecipients = [NSArray arrayWithObjects:@"my Email ID", nil];
        [mailer setToRecipients:toRecipients];

        NSData *fileData = [NSData dataWithContentsOfFile:[Utility getCurrentLogsFileNameFromUserDefaults]];
        NSString* theFileName = [[Utility getCurrentLogsFileNameFromUserDefaults] lastPathComponent];
        NSLog(@"File Data %@",theFileName);

        [mailer addAttachmentData:fileData mimeType:@"text/x-log" fileName:theFileName];

        NSString *emailBody = @"PFA for logs file.";
        [mailer setMessageBody:emailBody isHTML:NO];

        [self presentViewController:mailer animated:YES completion:nil];
    }
    else
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Failure"
                                                        message:@"Your device doesn't support the composer sheet"
                                                       delegate:nil
                                              cancelButtonTitle:@"OK"
                                              otherButtonTitles:nil];
        [alert show];
    }