objective c - mfmailcomposeviewcontrollerdelegate - MFMailComposeViewController en Swift

swift 3 send email

Question

Este es un código de muestra:

import UIKit
import MessageUI
class ViewController: UIViewController, MFMailComposeViewControllerDelegate {
@IBAction func showEmail(sender : AnyObject) {
var emailTitle = "Test Email"
var messageBody = "This is a test email body"
var toRecipents = ["[email protected]"]
var mc: MFMailComposeViewController = MFMailComposeViewController()
mc.mailComposeDelegate = self
mc.setSubject(emailTitle)
mc.setMessageBody(messageBody, isHTML: false)
mc.setToRecipients(toRecipents)
self.presentViewController(mc, animated: true, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func mailComposeController(controller:MFMailComposeViewController, didFinishWithResult result:MFMailComposeResult, error:NSError) {
switch result {
case MFMailComposeResultCancelled:
NSLog("Mail cancelled")
case MFMailComposeResultSaved:
NSLog("Mail saved")
case MFMailComposeResultSent:
NSLog("Mail sent")
case MFMailComposeResultFailed:
NSLog("Mail sent failure: %@", [error.localizedDescription])
default:
break
}
self.dismissViewControllerAnimated(false, completion: nil)
}
}

En la función mailComposeController me aparece un error en cada expresión de caso :

No se pudo encontrar una sobrecarga ''~ ='' que acepte los argumentos proporcionados.

¿Qué estoy haciendo mal?

Answer 1

Además de usar .value , no olvide agregar para break cada declaración de case , consulte la versión oficial de Apple: https://developer.apple.com/library/iOS/samplecode/MessageComposer/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010161

Answer 2

En swift 3, puedes usar este código claro:

 @IBAction func sendMail(_ sender: Any) {
print(MFMailComposeViewController.canSendMail())
if MFMailComposeViewController.canSendMail() {
let mail = MFMailComposeViewController()
mail.mailComposeDelegate = self
mail.setToRecipients(["[email protected]"])
mail.setMessageBody("<p>This is test Mail!</p>", isHTML: true)
present(mail, animated: true)
} else {
let email = "[email protected]"
if let url = URL(string: "mailto:/(email)") {
UIApplication.shared.open(url)
}
}
}
func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
controller.dismiss(animated: true)
switch result {
case .cancelled:
print("Mail cancelled")
case .saved:
print("Mail saved")
case .sent:
self.allertInfo(_title: "Mail Info", _message: "Mail is sent successfuly", _actionTitle: "OK")
print("Mail sent")
case .failed:
self.allertInfo(_title: "Mail Info", _message: "Mail isn''t sent.",
_actionTitle: "OK")
print("Mail sent failure: /(error?.localizedDescription)")
default:
break
}
}
func allertInfo(_title:String, _message:String, _actionTitle:String) {
let alert = UIAlertController(title: _title, message: _message, preferredStyle: UIAlertControllerStyle.alert)
alert.addAction(UIAlertAction(title: _actionTitle, style: UIAlertActionStyle.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}

Answer 3

En swift 3.0 -> Sintaxis de cambio

func mailComposeController(controller: MFMailComposeViewController,
didFinishWithResult result: MFMailComposeResult, error: NSError?) {
switch result.rawValue {
case MFMailComposeResult.Cancelled.rawValue:
print("Mail cancelled")
case MFMailComposeResult.Saved.rawValue:
print("Mail saved")
case MFMailComposeResult.Sent.rawValue:
print("Mail sent")
case MFMailComposeResult.Failed.rawValue:
print("Mail sent failure: %@", [error!.localizedDescription])
default:
break
}
// Dismiss the mail compose view controller.
controller.dismissViewControllerAnimated(true, completion: nil)
}

Answer 4

en Swift 2.0 haz esto:

func mailComposeController(controller: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?) {
switch result.rawValue {
case MFMailComposeResultCancelled.rawValue:
print("Mail cancelled")
case MFMailComposeResultSaved.rawValue:
print("Mail saved")
case MFMailComposeResultSent.rawValue:
print("Mail sent")
case MFMailComposeResultFailed.rawValue:
print("Mail sent failure: /(error!.localizedDescription)")
default:
break
}
controller.dismissViewControllerAnimated(true, completion: nil)
}

Answer 5

MFMailComposeResult documentación de MFMailComposeResult en Xcode 5 y Xcode 6. En Swift, MFMailComposeResult es una estructura

struct MFMailComposeResult {
init(_ value: CUnsignedInt) // available in iPhone 3.0
var value: CUnsignedInt
}

con MFMailComposeResultCancelled como una constante de tipo MFMailComposeResult :

var MFMailComposeResultCancelled: MFMailComposeResult { get }

Si bien es una enumeración en Objective-C:

 enum MFMailComposeResult {
MFMailComposeResultCancelled,
MFMailComposeResultSaved,
MFMailComposeResultSent,
MFMailComposeResultFailed
};
typedef enum MFMailComposeResult MFMailComposeResult; // available in iPhone 3.0

Para que su código funcione, tendrá que comparar sus valores que son CUnsignedInt .

Así que tendrás que escribir el siguiente código:

func mailComposeController(controller:MFMailComposeViewController, didFinishWithResult result:MFMailComposeResult, error:NSError) {
switch result.value {
case MFMailComposeResultCancelled.value:
println("Mail cancelled")
case MFMailComposeResultSaved.value:
println("Mail saved")
case MFMailComposeResultSent.value:
println("Mail sent")
case MFMailComposeResultFailed.value:
println("Mail sent failure: /(error.localizedDescription)")
default:
break
}
self.dismissViewControllerAnimated(false, completion: nil)
}