我想导出一个csv文件。
使用以下代码我设法获取文件
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)
//}
}
当我单击模拟器中的共享文件按钮时,我看到以下内容:
并快速查看它显示
所以接下来我做的是用iphone 5进行测试,我试着通过电子邮件发送sample.csv,但我只收到邮件正文而不是csv文件???
要通过电子邮件发送.csv文件,您可以执行以下操作:
import MessageUI
// 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)")
}
// 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)
}
在您的情况下,由于您已经创建了该文件,您可以直接通过更改CSV附加到邮件的行来直接附加该文件:
emailController.addAttachmentData(NSData(contentsOfFile: "YourFile")!, mimeType: "text/csv", fileName: "Sample.csv")
答案基于:Attach csv to email xcode,Create CSV file in Swift and write to file
在Swift 3中创建CSV文件
class ViewController: UIViewController {
var taskArr = [Task]()
var task: Task!
override func viewDidLoad() {
super.viewDidLoad()
task = Task()
for _ in 0..<5 {
task.name = "Raj"
task.date = "\(Date())"
task.startTime = "Start \(Date())"
task.endTime = "End \(Date())"
taskArr.append(task!)
}
creatCSV()
}
// MARK: CSV file creating
func creatCSV() -> Void {
let fileName = "Tasks.csv"
let path = NSURL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent(fileName)
var csvText = "Date,Task Name,Time Started,Time Ended\n"
for task in taskArr {
let newLine = "\(task.date),\(task.name),\(task.startTime),\(task.endTime)\n"
csvText.append(newLine)
}
do {
try csvText.write(to: path!, atomically: true, encoding: String.Encoding.utf8)
} catch {
print("Failed to create file")
print("\(error)")
}
print(path ?? "not found")
}
}
任务模型类
class Task: NSObject {
var date: String = ""
var name: String = ""
var startTime: String = ""
var endTime: String = ""
}
CSV输出显示如下格式