Send SMS Messages with Swift

SendSMSViewController.swift

import UIKit
import MessageUI // Import MessageUI

// Add the delegate protocol
class ViewController: UIViewController, MFMessageComposeViewControllerDelegate {
    
    // Send a message 
    func sendMessage() {
        let messageVC = MFMessageComposeViewController()
        messageVC.body = "Message String"
        messageVC.recipients = [] // Optionally add some tel numbers 
        messageVC.messageComposeDelegate = self
        
        presentViewController(messageVC, animated: true, completion: nil)
    }
    
  // Conform to the protocol
  // MARK: - Message Delegate method
  func messageComposeViewController(controller: MFMessageComposeViewController, didFinishWithResult result: MessageComposeResult) {
    switch result.rawValue {
    case MessageComposeResultCancelled.rawValue :
        print("message canceled")
        
    case MessageComposeResultFailed.rawValue :
        print("message failed")
        
    case MessageComposeResultSent.rawValue :
        print("message sent")
        
    default:
        break
    }
    controller.dismissViewControllerAnimated(true, completion: nil)
  }
}