如何將圖像選擇器添加到主故事板xcode swift？

Question

我想在iPhone上的iPhone應用程序中添加從你的圖像中選擇圖像的功能，我想知道給定的功能，以及我可以用它們做多少。 我需要的基本功能，將允許我瀏覽相冊，並選擇最終將加載在我的UIImageView中的圖像。

Answer 1

實現在swift中從庫中檢索圖像將使你的視圖控制器類應該實現UIImagePickerControllerDelegate的委託方法。使你的類看起來像這樣的頂級：

我們早些時候

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate { 

@IBOutlet var imageView: UIImageView! 

let imagePicker = UIImagePickerController() 

override func viewDidLoad() { 
     super.viewDidLoad() 

     imagePicker.delegate = self 
} 

ButtonTapped行動，我們會在那兒調出的UIImagePickerController：

@IBAction func loadImageButtonTapped(sender: UIButton) { 
    imagePicker.allowsEditing = false 
    imagePicker.sourceType = .PhotoLibrary 

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

UIImagePickerControllerSourceType，這給了3個選項：

1. UIImagePickerControllerSourceType.PhotoLibrary
2. UIImagePickerControllerSourceType.Camera

3. UIImagePickerControllerSourceType.SavedPhotosAlbum

   func imagePickerController(picker: UIImagePickerController,  didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) { 
   
        if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage { 
         imageView.contentMode = .ScaleAspectFit 
         imageView.image = pickedImage 
        } 
   
       dismissViewControllerAnimated(true, completion: nil) 
       }