ios - 委托(delegate)不适用于 SplitView

Question

我有一个 iPad 应用程序的 SplitView，其中包含主视图(左)和详细 View (右)。我希望，当我单击主视图中的按钮时，此调用父分割 View 上的委托(delegate)方法并将新 View 推到顶部，但永远不会调用委托(delegate)方法。为什么？

代码如下:

主视图:

protocol newAlbumDelegate{
   func openAlbum()
}
class newAlbumController: UIViewController {
   var delegate:newAlbumDelegate?

   @IBAction func buttonClick(sender:UIButton){
      delegate?.openAlbum()
   }
}

SplitView:

import UIKit

class AlbumSplitController: UISplitViewController, newAlbunDelegate {

   var newAlbumToAdd:newAlbumController = newAlbumController()

   //Delegate
   func openAlbum(){
      print("Do something")
   }

   override func viewDidLoad(){
      super.viewDidLoad()
      self.newAlbumToAdd.delegate = self
   }

有什么帮助吗？

问候，

Answer 1

在masterViewController中，将splitViewController指定为委托(delegate):

protocol newAlbumDelegate{
    func openAlbum()
}
class newAlbumController: UIViewController {
    var delegate:newAlbumDelegate?

    @IBAction func buttonClick(sender:UIButton){
        delegate?.openAlbum()
    }

    override func viewDidLoad(){
        super.viewDidLoad()
        let splitView = self.splitViewController as! AlbumSplitController
        self.delegate = splitView
    }
}

你的splitViewController变成:

class AlbumSplitController: UISplitViewController, newAlbumDelegate {

   //Delegate
   func openAlbum(){
      print("Do something")
   }
}