Envío de SMS en iOS con Swift

En primer lugar, estoy realmente sorprendido de que esto no sea un duplicado, porque hay TONELADAS de preguntas de desbordamiento de pila que resuelven esto en Objective-C, pero aún no he visto una buena respuesta que use Swift.

Lo que estoy buscando es un fragmento de código en Swift que envíe una cadena arbitraria como el cuerpo de un mensaje de texto a un número de teléfono dado. Esencialmente, me gustaría algo como esto de la documentación oficial de Apple, pero en Swift en lugar de Objective-C.

Me imagino que esto no es demasiado difícil, ya que se puede hacer con solo un par de líneas de código en Android.

EDITAR: Lo que estoy buscando son 5-20 líneas de código Swift, no estoy de acuerdo en que esto sea demasiado amplio. En Java (para Android), la solución se ve así:

package com.company.appname;
import android.app.Activity;
import android.telephony.SmsManager;
public class MainActivity extends Activity {
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        public static final mPhoneNumber = "1111111111";
        public static final mMessage = "hello phone";
        SmsManager.getDefault().sendTextMessage(mPhoneNumber, null, mMessage, null, null);
     }
}

Ahora bien, esta es la solución de Android, y solo tiene 11 líneas. Java tiende a ser mucho más detallado que Swift, así que dudo que lo que estoy preguntando sea "demasiado amplio", es más probable que no sepa cómo usar el objeto Objective-C MessageComposer, porque la documentación que vinculé lo anterior no está claro con respecto al uso en Swift.

No estoy seguro de si realmente obtuviste la respuesta. Estaba en una búsqueda similar y encontré esta solución y la hice funcionar.

import UIKit
import MessageUI

class ViewController: UIViewController, MFMessageComposeViewControllerDelegate {

    @IBOutlet weak var phoneNumber: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func sendText(sender: UIButton) {
        if (MFMessageComposeViewController.canSendText()) {
            let controller = MFMessageComposeViewController()
            controller.body = "Message Body"
            controller.recipients = [phoneNumber.text]
            controller.messageComposeDelegate = self
            self.presentViewController(controller, animated: true, completion: nil)
        }
    }

    func messageComposeViewController(controller: MFMessageComposeViewController!, didFinishWithResult result: MessageComposeResult) {
        //... handle sms screen actions
        self.dismissViewControllerAnimated(true, completion: nil)
    }

    override func viewWillDisappear(animated: Bool) {
        self.navigationController?.navigationBarHidden = false
    }
}

Solución Swift 3.0:

func sendSMSText(phoneNumber: String) {
        if (MFMessageComposeViewController.canSendText()) {
            let controller = MFMessageComposeViewController()
            controller.body = ""
            controller.recipients = [phoneNumber]
            controller.messageComposeDelegate = self
            self.present(controller, animated: true, completion: nil)
        }
    }

    func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) {
        //... handle sms screen actions
        self.dismiss(animated: true, completion: nil)
    }

    override func viewWillDisappear(_ animated: Bool) {
        self.navigationController?.isNavigationBarHidden = false
    }

Para enviar iMessage en Swift 5 utilizo el siguiente código

Solo paquete MessageUI e implementar MFMessageComposeViewControllerDelegate

import UIKit
import MessageUI

class ViewController: UIViewController, MFMessageComposeViewControllerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func sendNewIMessage(_ sender: Any) {
        let messageVC = MFMessageComposeViewController()
        messageVC.body = "Enter a message details here";
        messageVC.recipients = ["recipients_number_here"]
        messageVC.messageComposeDelegate = self
        self.present(messageVC, animated: true, completion: nil)
    }

    func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) {
        switch (result) {
        case .cancelled:
            print("Message was cancelled")
        case .failed:
            print("Message failed")
        case .sent:
            print("Message was sent")
        default:
            return
        }
        dismiss(animated: true, completion: nil)
    }
}

Si no desea depender de un UIViewController, siga una solución Swift 3.0 :

import UIKit
import MessageUI

class ECMMessageComposerBuilder: NSObject {

    private dynamic var customWindow: UIWindow?
    private var body: String?
    private var phoneNumber: String?
    fileprivate var messageController: MFMessageComposeViewController?

    var canCompose: Bool {
        return MFMessageComposeViewController.canSendText()
    }

    func body(_ body: String?) -> ECMMessageComposerBuilder {
        self.body = body
        return self
    }

    func phoneNumber(_ phone: String?) -> ECMMessageComposerBuilder {
        self.phoneNumber = phone
        return self
    }

    func build() -> UIViewController? {
        guard canCompose else { return nil }

        messageController = MFMessageComposeViewController()
        messageController?.body = body
        if let phone = phoneNumber {
            messageController?.recipients = [phone]
        }
        messageController?.messageComposeDelegate = self

        return messageController
    }

    func show() {
        customWindow = UIWindow(frame: UIScreen.main.bounds)
        customWindow?.rootViewController = MNViewController()

        // Move it to the top
        let topWindow = UIApplication.shared.windows.last
        customWindow?.windowLevel = (topWindow?.windowLevel ?? 0) + 1

        // and present it
        customWindow?.makeKeyAndVisible()

        if let messageController = build() {
            customWindow?.rootViewController?.present(messageController, animated: true, completion: nil)
        }
    }

    func hide(animated: Bool = true) {
        messageController?.dismiss(animated: animated, completion: nil)
        messageController = nil
        customWindow?.isHidden = true
        customWindow = nil
    }
}

extension ECMMessageComposerBuilder: MFMessageComposeViewControllerDelegate {

    func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) {
        controller.dismiss(animated: true, completion: nil)
        hide()
    }
}

Llamas al compositor de esta manera:

let phoneNumber = "987654321"
let composer = MNMessageComposerBuilder()
composer.phoneNumber(phoneNumber).show()

o usando una var perezosa

let phoneNumber = "987654321"
private lazy var messageComposer: MNMessageComposerBuilder = {
    let composer = MNMessageComposerBuilder()
    return composer
}()
messageComposer.phoneNumber(phoneNumber).show()

Rápido 3, 4, 5

@IBAction func sendSmsClick(_ sender: AnyObject) {
        guard MFMessageComposeViewController.canSendText() else {
            return
        }

        let messageVC = MFMessageComposeViewController()

        messageVC.body = "Enter a message";
        messageVC.recipients = ["Enter tel-nr"]
        messageVC.messageComposeDelegate = self;

        self.present(messageVC, animated: false, completion: nil)
    }

    func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) {
        switch (result.rawValue) {
            case MessageComposeResult.cancelled.rawValue:
            print("Message was cancelled")
            self.dismiss(animated: true, completion: nil)
        case MessageComposeResult.failed.rawValue:
            print("Message failed")
            self.dismiss(animated: true, completion: nil)
        case MessageComposeResult.sent.rawValue:
            print("Message was sent")
            self.dismiss(animated: true, completion: nil)
        default:
            break;
        }
    }

La interfaz de usuario se verá así:

Una solución más simple puede ser abrir un enlace html:

let mPhoneNumber = "1111111111";
let mMessage = "hello%20phone";
if let url = URL(string: "sms://" + mPhoneNumber + "&body="+mMessage) {
    UIApplication.shared.open(url)
}

Asegúrese de reemplazar los espacios con "% 20"

@IBAction func sendMessageBtnClicked(sender: AnyObject) {
    var messageVC = MFMessageComposeViewController()

    messageVC.body = "Enter a message";
    messageVC.recipients = ["Enter tel-nr"]
    messageVC.messageComposeDelegate = self;

    self.presentViewController(messageVC, animated: false, completion: nil)
}

func messageComposeViewController(controller: MFMessageComposeViewController!, didFinishWithResult result: MessageComposeResult) {
    switch (result.value) {
    case MessageComposeResultCancelled.value:
      println("Message was cancelled")
      self.dismissViewControllerAnimated(true, completion: nil)
    case MessageComposeResultFailed.value:
      println("Message failed")
      self.dismissViewControllerAnimated(true, completion: nil)
    case MessageComposeResultSent.value:
      println("Message was sent")
     self.dismissViewControllerAnimated(true, completion: nil)
    default:
      break;
    }
}