Monday, November 17, 2014

presentViewController(pickerController - Show a photo from the photo album

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

Edit ViewController.swift as below:


import UIKit

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    var imageView : UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
       
        let button = UIButton(frame: CGRectMake(70, 100, 200, 20))
        button.setTitle("Pick a Photo", forState: UIControlState.Normal)
        button.setTitleColor(UIColor.blueColor(), forState: UIControlState.Normal)
        button.setTitleColor(UIColor.cyanColor(), forState: UIControlState.Highlighted)
        button.addTarget(self, action: "photoAlbum:", forControlEvents: UIControlEvents.TouchUpInside)
        view.addSubview(button)
        
        imageView = UIImageView(frame: CGRectMake(50, 150, 200, 200))
        imageView.contentMode = UIViewContentMode.ScaleAspectFit
        view.addSubview(imageView)
    }
    
    func photoAlbum(sender: UIButton) {
        if(UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.SavedPhotosAlbum)) {
            let pickerController = UIImagePickerController()
            pickerController.delegate = self
            self.presentViewController(pickerController, animated: true, completion: nil)
        }
    }
    
    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
        let pictureSelected = info[UIImagePickerControllerOriginalImage] as! UIImage
        imageView.image = pictureSelected
        picker.dismissViewControllerAnimated(true, completion: nil)
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}

Original Post (November 17, 2014):

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: AnyObject) {


    }

3. Add delegates

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

4. Complete Code:

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    @IBOutlet weak var picture: UIImageView!
    
    @IBAction func photoAlbum(sender: AnyObject) {
        if(UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.SavedPhotosAlbum)) {
            var pickerController = UIImagePickerController()
            pickerController.delegate = self
            self.presentViewController(pickerController, animated: true, completion: nil)
        }
    }
    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
        let pictureSelected = info[UIImagePickerControllerOriginalImage] as UIImage
        self.picture.image = pictureSelected
        picker.dismissViewControllerAnimated(true, completion: nil)
    }

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