Pick a photo from the device album and email it as attachment

This post is written with Xcode 7.1/Swift 2.1.

Edit ViewController.swift as below:

import UIKit

import MessageUI

class ViewController: UIViewController, MFMailComposeViewControllerDelegate,UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    

    var myUIImage : UIImage!

    

    override func viewDidLoad() {

        super.viewDidLoad()

        

        let button = UIButton(frame: CGRectMake(70, 100, 200, 20))

        button.setTitle("Pick a Photo", forState: UIControlState.Normal)

        button.setTitleColor(UIColor.blueColor(), forState: UIControlState.Normal)

        button.setTitleColor(UIColor.cyanColor(), forState: UIControlState.Highlighted)

        button.addTarget(self, action: "photoAlbum:", forControlEvents: UIControlEvents.TouchUpInside)

        view.addSubview(button)

    }

    

    func photoAlbum(sender: UIButton) {

        if(UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.SavedPhotosAlbum)) {

            let pickerController = UIImagePickerController()

            pickerController.delegate = self

            self.presentViewController(pickerController, animated: true, completion: nil)

        }

    }

    

    func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {

        myUIImage = image

        picker.dismissViewControllerAnimated(true, completion: {

            dispatch_async(dispatch_get_main_queue(), {

                self.emailSetup()

            })

        })

    }

    

    func emailSetup() {

        

        let myController = MFMailComposeViewController()

        myController.mailComposeDelegate = self

        myController.setSubject("My Photo")

        myController.setMessageBody("Picked from my photo album.", isHTML: false)

        myController.setToRecipients(["mymail@mymail.com"])

        

        let imageData = UIImagePNGRepresentation(myUIImage)

        myController.addAttachmentData(imageData!, mimeType: "image/jpeg", fileName: "image")

        

        self.presentViewController(myController, animated: true, completion: nil)

    }

    

    func mailComposeController(controller: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?) {

        if result.rawValue == MFMailComposeResultSent.rawValue {

            self.dismissViewControllerAnimated(false, completion: {

                

                dispatch_async(dispatch_get_main_queue(), {

                

                    let alertController = UIAlertController(title: "", message: "Mail Sent!", preferredStyle: UIAlertControllerStyle.Alert)

                    alertController.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))

            

                    self.presentViewController(alertController, animated:true, completion:nil)

                })

            })

        }

        

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

    }

}

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