MFMailComposeViewController - Write an email with an image attachment

Updated with Xcode 7.1/Swift 2.1 (November 11, 2015):

Edit ViewController.swift as:

import UIKit

import MessageUI

class ViewController: UIViewController, MFMailComposeViewControllerDelegate {

    

    var myUIImage : UIImage!

    

    override func viewDidLoad() {

        super.viewDidLoad()

        

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

        button.setTitle("Press", forState: UIControlState.Normal)

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

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

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

        view.addSubview(button)

    }

    

    func emailButtonPressed(sender: UIButton) {

        

        let myController = MFMailComposeViewController()

        myController.mailComposeDelegate = self

        myController.setSubject("Hello 123")

        myController.setMessageBody("Hello World!", isHTML: false)

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

        

        let imageData = UIImagePNGRepresentation(UIImage(named: "image.png")!)

        myController.addAttachmentData(imageData!, mimeType: "image/png", 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: {

                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()

    }

}

Original post (December 28, 2014):

1. Create a UIButton and a UIImageView

2. Include an image file image.png (or a photo) in the project

3. Write the code as below:

import UIKit

import MessageUI

class ViewController: UIViewController, MFMailComposeViewControllerDelegate {

    @IBOutlet weak var myImage: UIImageView!

    

    var myUIImage : UIImage!

    

    @IBAction func emailButtonPressed(sender: UIButton) {

        

        var myController = MFMailComposeViewController()

        myController.mailComposeDelegate = self

        myController.setSubject("Hello 123")

        myController.setMessageBody("Hello World!", isHTML: false)

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

        

        var imageData = UIImagePNGRepresentation(myUIImage)

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

        

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

    }

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

        if result.value == MFMailComposeResultSent.value {

            let alertView = UIAlertView()

            alertView.message = "Mail Sent!"

            alertView.addButtonWithTitle("OK")

            

            alertView.show()

        }

        self.dismissViewControllerAnimated(false, completion: nil)

    }

    override func viewDidLoad() {

        super.viewDidLoad()

        

        myUIImage = UIImage(named: "image.png")

        

        self.myImage.image = myUIImage

    }


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supportedInterfaceOrientations - Support Landscape orientations only.

Update March 18, 2016: 

It seems that the Swift 1 code below is no longer required for Xcode 7.2.1 (Swift 2.1.1).
Just define the portrait/landscape settings in the General ->Deployment Info -> Device Orientation section of the project settings.

========== Swift 1 code below ============

This disables the portrait orientation.

//Auto rotate is still enabled.

    override func shouldAutorotate() -> Bool {

        return true

    }

//Only the left and right landscape orientations are supported.

    override func supportedInterfaceOrientations() -> Int {

        return Int(UIInterfaceOrientationMask.LandscapeLeft.rawValue) | Int(UIInterfaceOrientationMask.LandscapeRight.rawValue)

    }

UIButton with an image. Scale: aspect fit.

Updated with Xcode 8.0/Swift 3 (September 19, 2016): 

override func viewDidLoad() {

    super.viewDidLoad()

        

    let image = UIImage(named: "image.png")

    let button = UIButton(frame: CGRect(x: 100, y: 100, width: 200, height: 200))

    button.imageView?.contentMode = UIViewContentMode.scaleAspectFit

    button.setImage(image, for: UIControlState.normal)

    button.addTarget(self, action: #selector(buttonPressed), for: UIControlEvents.touchUpInside)

    view.addSubview(button)

}

    

func buttonPressed() {

    print("button pressed!!")

}

Updated with Xcode 7.1.1/Swift 2.1 (November 12, 2015): 

    override func viewDidLoad() {

        super.viewDidLoad()

        

        let image = UIImage(named: "image.png")

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

        button.imageView?.contentMode = UIViewContentMode.ScaleAspectFit

        button.setImage(image, forState: UIControlState.Normal)

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

        self.view.addSubview(button)

    }

    

    func buttonPressed(sender: UIButton) {

        print("button pressed!!")

    }

Original post (December 17, 2014): 

   override func viewDidLoad() {

        super.viewDidLoad()

        

        let image = UIImage(named: "image.png") as UIImage!

        let button = UIButton.buttonWithType(UIButtonType.System) as UIButton

        button.frame = CGRectMake(100, 100, 200, 200)

        button.imageView?.contentMode = UIViewContentMode.ScaleAspectFit

        button.setImage(image, forState: .Normal)

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

        self.view.addSubview(button)

    }

    func buttonPressed(sender: UIButton) {

        println("button pressed!!")

}

presentPopoverFromRect - Show a photo from the photo album to a popover with an iPad

1. Drag a UIImageView and Button to the storyboard.
Adjust the view mode of UIImageView to Aspect Fit

2. Control-drag to create:

    @IBOutlet weak var picture: UIImageView!

    

    @IBAction func photoAlbum(sender: UIButton) {

    }

3. Add delegates

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate, UIPopoverControllerDelegate {

4. Complete Code:

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate, UIPopoverControllerDelegate {

    @IBOutlet weak var picture: UIImageView!

    

    var myPopOverController : UIPopoverController!

    

    @IBAction func photoAlbum(sender: UIButton) {

        var myImagePickerController = UIImagePickerController()

        myImagePickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary

        myImagePickerController.delegate = self

        

        myPopOverController = UIPopoverController(contentViewController: myImagePickerController)

        

        myPopOverController.presentPopoverFromRect(sender.frame, inView: view, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: true)

    }

    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {

        let myImage = info[UIImagePickerControllerOriginalImage] as UIImage

        self.picture.image = myImage

        myPopOverController.dismissPopoverAnimated(true)

    }