ios - 是否有必要在 swift iOS 中使用扩展来定义委托(delegate)方法

Question

swift 中的委托(delegate)方法定义是否需要使用扩展？

例如:

extension MasterViewController: DetailViewControllerDelegate {
   func didFinishTask(sender: DetailViewController) 
   { 
    // do stuff like updating the UI 
   } 
}

Answer 1

不，没有必要只在扩展中实现委托(delegate)方法。您可以将委托(delegate)方法实现到确认委托(delegate)的简单 View Controller 。

例如

class ViewController: UIViewController, UIImagePickerControllerDelegate {
     override func viewDidLoad() {
          super.viewDidLoad()

     }

     // MARK: Image Picker Controller Delegate method

     func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {

     }
}