将数组保存到文本文件并快速附加到电子邮件

Question

我最近一直在努力将 .txt 文件创建到电子邮件中。

我有一个变量，它是我想要写入 txt 文件的字符串列表，然后将其作为附件添加到电子邮件中。

我还没有找到任何合适的文档。

期待一些伟大的意见。谢谢！

编辑--------- 我找到了这个代码示例：并且我收到以下错误。

@IBAction func createFile(sender: AnyObject) {
        let path = tmpDir.stringByAppendingPathComponent(fileName)
        let contentsOfFile = "Sample Text"
        var error: NSError?

        // Write File
        if contentsOfFile.writeToFile(path, atomically: true, encoding: NSUTF8StringEncoding, error: &error) == false {
            if let errorMessage = error {
                println("Failed to create file")
                println("\(errorMessage)")
            }
        } else {
            println("File sample.txt created at tmp directory")
        }
    }

让路径 = tmpDir.stringByAppendingPathComponent(fileName)

我收到一条错误消息，告诉我“'String' 类型的值没有成员 URLByAppendingPathComponent'”

我该如何解决这个问题？

Answer 1

用于发送带有附件的邮件

import MessageUI


@IBAction func sendEmail(sender: UIButton) {

    if( MFMailComposeViewController.canSendMail() ) {
let mailComposer = MFMailComposeViewController()
            mailComposer.mailComposeDelegate = self

            //Set the subject and message of the email
            mailComposer.setSubject("Subject")
            mailComposer.setMessageBody("body text", isHTML: false)

            if let fileData = NSData(contentsOfFile: filePath) {
                mailComposer.addAttachmentData(fileData, mimeType: "text/txt", fileName: "data")
            }

            self.presentViewController(mailComposer, animated: true, completion: nil)
    }
}

基于 http://kellyegan.net/sending-files-using-swift/

从数组创建文件

let strings = ["a","b"]
let joinedString = strings.joinWithSeparator("\n")
do {
    try joinedString.writeToFile(path, atomically: true, encoding: NSUTF8StringEncoding)
} catch {

}

但是，您可以从字符串创建 NSData，而不是先将其写入文件。

//example data
let filename = "testfile"
let strings = ["a","b"]

if(MFMailComposeViewController.canSendMail()){

    let mailComposer = MFMailComposeViewController()
    mailComposer.mailComposeDelegate = self
    mailComposer.setToRecipients([mail])
    mailComposer.setSubject("\(subject)" )
    mailComposer.setMessageBody("\(messagebody)", isHTML: false)

    let joinedString = strings.joinWithSeparator("\n")
    print(joinedString)
    if let data = (joinedString as NSString).dataUsingEncoding(NSUTF8StringEncoding){
        //Attach File
        mailComposer.addAttachmentData(data, mimeType: "text/plain", fileName: "test")
        self.presentViewController(mailComposer, animated: true, completion: nil)
    }
}

然后在结果上关闭作曲家控制器

func mailComposeController(controller: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?) {
    controller.dismissViewControllerAnimated(true, completion: nil)
}