UIImagePickerControllerSourceType.Camera - Take a photo

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 takePhoto(sender: AnyObject) {

    }

3. Add delegates

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

4. Complete Code:

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    @IBOutlet weak var picture: UIImageView!

    

    @IBAction func takePhoto(sender: AnyObject) {

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

            var pickerController = UIImagePickerController()

            pickerController.delegate = self

            pickerController.sourceType = UIImagePickerControllerSourceType.Camera

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

        }

    }

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

        let pictureTaken = info[UIImagePickerControllerOriginalImage] as UIImage

        self.picture.image = pictureTaken

        UIImageWriteToSavedPhotosAlbum(pictureTaken, nil, nil, nil)

        picker.dismissViewControllerAnimated(true, completion: nil)

    }