如何快速从UIAlertAction打开图片库？

Question

I'm making an app that the user can add his image to a table view list. When he gets to the view, an alert, action sheet styled, pops up asking him if he wants to take the picture, choose from the library or cancel.

I'm having trouble with the second. I'm able to open the library with buttons using the following code:

@IBOutlet weak var imageView: UIImageView!

@IBAction func loadPhoto(sender: AnyObject) {
            let pickerC = UIImagePickerController()
            pickerC.delegate = self
            self.presentViewController(pickerC, animated: true, completion: nil)
        }

func imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info: NSDictionary!) {

            self.dismissViewControllerAnimated(true, completion: nil);

            let gotImage = info[UIImagePickerControllerOriginalImage] as UIImage
            imageView.image = gotImage

        }

But when I try using this code with an UIAlertAction it doesn't work. Can someone help me, please?

Thanks

Answer 1

class ViewController: UIViewController, UIImagePickerControllerDelegate

Then write following code where you want to open UIImagePickerController .

if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary
){
            println("Button capture")

            var imagePicker = UIImagePickerController()
            imagePicker.delegate = self
            imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary;
            imagePicker.allowsEditing = false

            self.presentViewController(imagePicker, animated: true, completion: nil)
        }

Then implement following delegate method.

func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!){
    self.dismissViewControllerAnimated(true, completion: { () -> Void in

    })

    imageView.image = image

}