Swift - UIImagePickerController - how to use it?

Question

I am trying hard to understand how this works, but it's pretty hard for me. =) I have 1 view, there is one button and one small ImageView area for preview. The button triggers imagepickercontroller, and the UIView will display picked image. There is no error but the image doesn't show in the UIImageView area.

var imagePicker = UIImagePickerController() @IBOutlet var imagePreview : UIImageView  @IBAction func AddImageButton(sender : AnyObject) {     imagePicker.modalPresentationStyle = UIModalPresentationStyle.CurrentContext     imagePicker.delegate = self     self.presentModalViewController(imagePicker, animated: true)  } func imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info:NSDictionary!) {     var tempImage:UIImage = info[UIImagePickerControllerOriginalImage] as UIImage     imagePreview.image  = tempImage      self.dismissModalViewControllerAnimated(true)  }  func imagePickerControllerDidCancel(picker: UIImagePickerController!) {      self.dismissModalViewControllerAnimated(true) } 

Answer 1

You're grabbing a UIImage named UIImagePickerControllerOriginalImage and there exists no such image. You're meant to grab the UIImage with the key UIImagePickerControllerOriginalImage from the editingInfo dictionary:

let tempImage = editingInfo[UIImagePickerControllerOriginalImage] as! UIImage