将.txt文件附加到MFMailComposeViewController

Question

我在“文档”文件夹中有一个txt文件，我想通过MFMailComposeViewController发送它，并将下面的代码放入“sendEmail”方法的正文中：

NSData *txtData = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"dataBase" ofType:@"txt"]];
        [mail addAttachmentData:txtData mimeType:@"text/plain" fileName:[NSString stringWithFormat:@"dataBase.txt"]];

当邮件编辑器出现时，我可以在邮件正文中看到附件，但我收到的邮件没有附件。也许是.txt附件的MIME类型不正确或者这段代码有问题？谢谢。

- Alex

Answer 1

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];        
        NSString *txtFilePath = [documentsDirectory stringByAppendingPathComponent:@"abc.txt"];
NSData *noteData = [NSData dataWithContentsOfFile:txtFilePath];
        MFMailComposeViewController *_mailController = [[MFMailComposeViewController alloc] init];
        [_mailController setSubject:[NSString stringWithFormat:@"ABC"]];
        [_mailController setMessageBody:_messageBody
                                 isHTML:NO];
        [_mailController setMailComposeDelegate:self];
        [_mailController addAttachmentData:noteData mimeType:@"text/plain" fileName:@"abc.txt"];

希望有帮助。

- Rajan Balana

Answer 2

在Swift 3中，您可以像这样发送带附件的电子邮件

@IBAction func emailLogs(_ sender: Any) {
    let allPaths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
    let documentsDirectory = allPaths.first!
    let pathForLog = documentsDirectory.appending("/application.log")

    if MFMailComposeViewController.canSendMail() {
        let mail = MFMailComposeViewController()
        mail.mailComposeDelegate = self;
        mail.setToRecipients(["[e-mail]"])
        mail.setSubject("Application Logs")
        mail.setMessageBody("Please see attached", isHTML: true)

        if let fileData = NSData(contentsOfFile: pathForLog) {
            mail.addAttachmentData(fileData as Data, mimeType: "text/txt", fileName: "application.log")
        }

        self.present(mail, animated: true, completion: nil)
    }
}

然后，在结果上关闭作曲家控制器

func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
    controller.dismiss(animated: true, completion: nil)
}

记得订阅此代表

MFMailComposeViewControllerDelegate

- superm0