我如何精确导出从swift写的iOS的csv文件？ [英] How do i exactly export a csv file from iOS written in swift?

问题描述

我正在尝试导出一个cvs文件。

I am trying to export an cvs file.

使用以下代码，我设法获取文件

With the following code i manage to get the file

let fileName = "sample.csv"//"sample.txt"        
    @IBAction func createFile(sender: AnyObject) {
            let path = tmpDir.stringByAppendingPathComponent(fileName)
            let contentsOfFile = "No,President Name,Wikipedia URL,Took office,Left office,Party,Home State\n1,George Washington,http://en.wikipedia.org/wiki/George_Washington,30/04/1789,4/03/1797,Independent,Virginia\n2,John Adams,http://en.wikipedia.org/wiki/John_Adams,4/03/1797,4/03/1801,Federalist,Massachusetts\n3,Thomas Jefferson,http://en.wikipedia.org/wiki/Thomas_Jefferson,4/03/1801,4/03/1809,Democratic-Republican,Virginia\n4,James Madison,http://en.wikipedia.org/wiki/James_Madison,4/03/1809,4/03/1817,Democratic-Republican,Virginia\n5,James Monroe,http://en.wikipedia.org/wiki/James_Monroe,4/03/1817,4/03/1825,Democratic-Republican,Virginia\n6,John Quincy Adams,http://en.wikipedia.org/wiki/John_Quincy_Adams,4/03/1825,4/03/1829,Democratic-Republican/National Republican,Massachusetts"
                //"Sample Text repacement for future cvs data"content to save

            // Write File

            do {
                try contentsOfFile.writeToFile(path, atomically: true, encoding: NSUTF8StringEncoding)
                print("File sample.txt created at tmp directory")
            } catch {

                print("Failed to create file")
                print("\(error)")
            }

        }

// Share button
    @IBAction func shareDoc(sender: AnyObject) {
        print("test share file")

         docController.UTI = "public.comma-separated-values-text"
            docController.delegate = self//delegate
            docController.name = "Export Data"
            docController.presentOptionsMenuFromBarButtonItem(sender as! UIBarButtonItem, animated: true)

        //}
    }

当我点击模拟器中的共享文件按钮时，我看到以下内容：

When i click the share file button in the simulator i see the following:

，快速查看

所以我做的下一件事是测试我的iphone 5，我试图发送电子邮件sample.csv，但我只收到邮件正文，而不是csv文件？

So the next thing i did was testing with my iphone 5 and i tried to email sample.csv but i am only getting the message body and not the csv file???

1. 如何实际发送.csv文件？


2. 哪些导出的可能性有？ / li>
   

1. how can i actually email the .csv file?
2. which export possibilities are there?

推荐答案

为了发送.csv文件，您可以执行以下操作：

In order to email the .csv file, you can do the following:

1. 将此导入添加到课堂顶部。它允许您使用MFMailComposeViewController，这是一种发送电子邮件的方式。

1. Add this import to the top of the class. It allows you to use MFMailComposeViewController, which is a way to send emails.

import MessageUI

生成您的数据，我所做的一个示例是：

Generate your data, a sample I have done is:

// Creating a string.
var mailString = NSMutableString()
mailString.appendString("Column A, Column B\n")
mailString.appendString("Row 1 Column A, Row 1 Column B\n")
mailString.appendString("Row 2 Column A, Row 2 Column B\n")

// Converting it to NSData.
let data = mailString.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)

// Unwrapping the optional.
if let content = data {           
    print("NSData: \(content)")
}

/ li>

生成MFMailComposeViewController

Generate the MFMailComposeViewController

// Generating the email controller.
    func configuredMailComposeViewController() -> MFMailComposeViewController {
        let emailController = MFMailComposeViewController()
        emailController.mailComposeDelegate = self
        emailController.setSubject("CSV File")
        emailController.setMessageBody("", isHTML: false)

        // Attaching the .CSV file to the email.
        emailController.addAttachmentData(data!, mimeType: "text/csv", fileName: "Sample.csv")

        return emailController
    }

// If the view controller can send the email.
// This will show an email-style popup that allows you to enter
// Who to send the email to, the subject, the cc's and the message.
// As the .CSV is already attached, you can simply add an email 
// and press send.
    let emailViewController = configuredMailComposeViewController()
    if MFMailComposeViewController.canSendMail() {
        self.presentViewController(emailViewController, animated: true, completion: nil)
    }

在你的情况下，你已经创建了这个文件，通过将CSV附加到邮件的行直接更改为：

In your case, as you have already created the file, you can simply attach that directly by changing the line where the CSV is attached to the mail for:

    emailController.addAttachmentData(NSData(contentsOfFile: "YourFile")!, mimeType: "text/csv", fileName: "Sample.csv")

答案基于：将csv附加到电子邮件xcode ，
在Swift中创建CSV文件并写入文件

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