将从库中获取的图像设置为UIImageView

Question

面临的问题是将我从图库中选择的图片放入UIImageView(imageChosen).

代码运行正常没有任何错误,但我选择的图片没有设置为"imageChosen"

这是我的代码

class postChoices: UIViewController {

    @IBOutlet weak var imageChosen: UIImageView!

    @IBAction func gallery(sender: AnyObject) {

        var image = UIImagePickerController()
        //image.delegate = self
        image.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
        image.allowsEditing = false

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

    }
    override func viewDidLoad() {
        super.viewDidLoad()

            // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image2: UIImageView!, editingInfo: NSDictionary!) {
      //  let selectedImage : UIImageView = image
        imageChosen.image = image2.image

    }


}

Answer 1

//Complete solution with delegates and image handling    

     import UIKit

        class ViewController: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate {

            @IBOutlet weak var myImageView: UIImageView!
            let picker = UIImagePickerController()

            @IBAction func gallery(sender: AnyObject) {

                if UIImagePickerController.availableMediaTypesForSourceType(.PhotoLibrary) != nil {
                    picker.allowsEditing = false
                    picker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
                    presentViewController(picker, animated: true, completion: nil)
                } else {
                    noCamera()
                }

            }
            func noCamera(){
                let alertVC = UIAlertController(title: "No Camera", message: "Sorry, Gallery is not accessible.", preferredStyle: .Alert)
                let okAction = UIAlertAction(title: "OK", style:.Default, handler: nil)
                alertVC.addAction(okAction)
                presentViewController(alertVC, animated: true, completion: nil)
            }

            override func viewDidLoad() {
                super.viewDidLoad()
                // Do any additional setup after loading the view, typically from a nib.
                picker.delegate = self   //the required delegate to get a photo back to the app.
             }

            //MARK: - Delegates
            //What to do when the picker returns with a photo
            func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
                var chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage //2
                myImageView.contentMode = .ScaleAspectFit //3
                myImageView.image = chosenImage //4
                dismissViewControllerAnimated(true, completion: nil) //5
            }
            //What to do if the image picker cancels.
            func imagePickerControllerDidCancel(picker: UIImagePickerController) {
                dismissViewControllerAnimated(true, completion: nil)
            }
        }

演示项目