将 .txt 附加到 MFMailComposeViewController答案

【问题标题】：Attaching .txt to MFMailComposeViewController将 .txt 附加到 MFMailComposeViewController
【发布时间】：2013-01-20 09:16:37
【问题描述】：

我有一个 .txt 文件存储在 Documents 文件夹中，我想通过 MFMailComposeViewController 发送它，并在 -sendEmail 方法的正文中添加下一个代码：

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。可能是 .txt 附件的 MIME 类型错误或此代码有问题？

谢谢

【问题讨论】：

标签： ios objective-c xcode email-attachments mfmailcomposeviewcontroller

【解决方案1】：

在 Swift 3 中，您可以像这样发送带有附件的邮件

@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(["recipient@email.com"])
        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)
}

确保订阅此委托

MFMailComposeViewControllerDelegate

【讨论】：

【解决方案2】：

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"];

希望对你有帮助。

【讨论】：