轉換爲swift 3後，AppDelegate.swift函數返回錯誤（無法轉換爲PFBooleanResultBlock？）？

Question

最近，我將我的應用程序從以前的版本雨燕SWIFT的3.0（也拿到了最新的Xcode版本）和許多其他錯誤中，我收到了以下之一：

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) { 
     let installation = PFInstallation.current() 
     installation.setDeviceTokenFrom(deviceToken) 
     installation.saveInBackground() 

     PFPush.subscribeToChannel(inBackground: "") { (succeeded: Bool, error: NSError?) in 
      if succeeded { 
       print("ParseStarterProject successfully subscribed to push notifications on the broadcast channel.\n"); 
      } else { 
       print("ParseStarterProject failed to subscribe to push notifications on the broadcast channel with error = %@.\n", error) 
      } 
     } 
    } 

這來自我下載了一個SDK作爲模板（PF是指Parse框架......我使用Heroku託管的Parse-server）。錯誤返回說：「不能將類型'（Bool，NSError？） - >（）'的值轉換爲期望的參數類型'PFBooleanResultBlock？'」

不知道如何解決這個問題。有人有任何想法嗎？

Answer 1

我相信你可以改變你這樣的代碼：

PFPush.subscribeToChannel(inBackground: "", block: {(succeeded, error) -> Void in 
     if succeeded { 
      print("ParseStarterProject successfully subscribed to push notifications on the broadcast channel.\n"); 
     } else { 
      print("ParseStarterProject failed to subscribe to push notifications on the broadcast channel with error = %@.\n", error) 
     } 
    } 

Answer 2

隨着斯威夫特3，你可以這樣寫：

PFPush.subscribeToChannel(inBackground: "") { (succeeded, error) in 
     if succeeded { 
      print("ParseStarterProject successfully subscribed to push notifications on the broadcast channel.\n") 
     } else { 
      print("ParseStarterProject failed to subscribe to push notifications on the broadcast channel with error = %@.\n", error) 
     } 
    }