委託功能，如何傳遞參考？

Question

THX奧斯汀誰解決我的問題，更新的正確的代碼現在： （下面的代碼說明了問題:)

import Cocoa 

class MyViewController1 : NSViewController, myProtocol { 

// Identifier MyViewController2ID is set in storyboard for class MyViewController2 
lazy var myViewController2: NSViewController = { 
    return self.storyboard!.instantiateControllerWithIdentifier("MyViewController2ID") 
     as! NSViewController 
}() 

// ViewController conforms to protocol 
func myFunction() { 
    // do something 
} 

// ... some action 
// presenting new viewcontroller as sheet 
// new controller is presented and is dismissed 
// when self.dismissController(self) is called 
// in MyViewController2 

self.presentViewControllerAsSheet(self.myViewController2) 
} 

protocol myProtocol : class { 
func myFunction() 
} 

// Identifier MyViewController2ID for class 
// MyViewController2 is set in storyboard 
class MyViewController2 : NSViewController { 

weak var delegate:myProtocol? 

override func viewDidLoad() { 
    super.viewDidLoad() 
    ... 
    if let pvc = self.presentingViewController as? MyViewController1 { 
     self.delegate = pvc 
    } 
} 
// function is activated 
func someFunction() { 
    self.delegate?.myFunction() 
    self.dismissController(self) 
    } 

} 

MyViewController2是通過調用提出：

self.presentViewControllerAsSheet（自我。 myViewController2）

內MyViewController1，並通過調用self.dismisscontroller（個體經營）someFunction（）在MyViewController2被解僱..

問題是委託是零...我不知道如何將引用傳遞給委託函數？

當調用另一個viewcontroller bye segue時，在segue中設置委託函數的引用。有沒有segue爲委託函數提供參考？

有人嗎？

Answer 1

在MyViewController2的viewDidLoad()中，獲取presentingViewController並將其設置爲委託。

// viewDidLoad - MyViewController2 
if let pvc = self.presentingViewController as? MyViewController1 { 
    self.delegate = pvc 
}