无法将 GKTurnBasedEventListener 设置为我的 ViewController 的委托？

Question

在 objC 中 Rawendrich 为 GKTurnBasedEventListener 编写的语法，当时是 GKTurnBasedEventHandler，现在由 Apple 更改如下。

 if (!gameCenterAvailable) return;

void (^setGKEventHandlerDelegate)(NSError *) = ^ (NSError *error)
{
    GKTurnBasedEventHandler *ev = 
      [GKTurnBasedEventHandler sharedTurnBasedEventHandler];
    ev.delegate = self;
};

NSLog(@"Authenticating local user...");
if ([GKLocalPlayer localPlayer].authenticated == NO) {     
    [[GKLocalPlayer localPlayer] 
     authenticateWithCompletionHandler:
      setGKEventHandlerDelegate];        
} else {
    NSLog(@"Already authenticated!");
    setGKEventHandlerDelegate(nil);
}

现在将其转换为swift，并用写下GKTurnBasedEventListener而不是GKTurnBasedEventHandler的组合，得到以下方式。

//  Converted with Swiftify v1.0.6381 - https://objectivec2swift.com/
if !gameCenterAvailable {
return
}
var setGKEventHandlerDelegate: ((_: Error) -> Void)? = {(_ error:   Error?) -> Void in
    var ev = GKTurnBasedEventHandler.shared()
    ev.delegate = self
}
print("Authenticating local user...")
if GKLocalPlayer.localPlayer().authenticated == false {
GKLocalPlayer.localPlayer().authenticate(withCompletionHandler:    setGKEventHandlerDelegate)
}
else {
print("Already authenticated!")
setGKEventHandlerDelegate(nil)

}

不幸的是，这不是为我的 ViewController.

设置 GKTurnBasedEventListener 委托的正确语法

请问你们谁能帮我解决这个问题，因为没有这个我就无法阅读事件侦听器的默认函数。

干杯！

Answer 1

终于在艰难的 10 小时后，我从 Here. Although this syntax is in objC, but there's no problem of converting it to swift from Swiftify 中找出了这个问题。

虽然比实际时间晚了一点，但我现在可以理解 GKTunBasedEventListener 的设置委托与我们为 UITableViewControllerDelegate 所做的不同。

这里必须先对本地播放器进行认证，然后再将本地播放器的监听器注册到ViewController的delegate GKLocalPlayerListener。

我在 Apple's Documentation 上发现的另一件事：不要直接实现GKChallengeListener、GKInviteEventListener、GKSavedGameListener和GKTurnBasedEventListener；改为实施 GKLocalPlayerListener 。您可以使用 GKLocalPlayerListener.

监听和处理多个事件

那么接下来我就按照下面的方式实现了。

import GameKit

class ViewController: UIViewController,   GKTurnBasedMatchmakerViewControllerDelegate, 
GKLocalPlayerListener {


..... 


func player(_ player: GKPlayer, receivedTurnEventFor match: GKTurnBasedMatch, didBecomeActive: Bool) {

    print("#1")
    print(player)
    print("#2")
    print(match)
    print("#3")
    print(didBecomeActive)

    if match.status == GKTurnBasedMatchStatus.open
    {
        if GKLocalPlayer.localPlayer() == match.currentParticipant
        {


        if didBecomeActive
        {
            // Active now
        }
        else
        {
            // Active already
        }

        }
        else
        {
            // It's someone's turn

            if match.matchData != myMatch?.matchData
            {
               // Match Data being Updated by Someone
                print(player.alias ?? "No Name:")
            }

        }


    }

    thirdTopLabel.text = match.matchID! + "\n" + didBecomeActive.description

}

....

现在在 ViewDidLoad() 函数中放入以下代码。

// In the ViewDidLoad function 
 if(!GKLocalPlayer.localPlayer().isAuthenticated)
    {
        authenticatePlayer { (auth) in

            weak var weakSelf = self
            weak var weakPlayer = GKLocalPlayer.localPlayer()

            if(auth){


                 weakPlayer?.register(weakSelf!)
                 self.suthentication = true;

            }
            else{
                print("failed in authentication")
                self.suthentication = false;
            }

        }

    }
    else
    {
        // Already Authenticated
        GKLocalPlayer.localPlayer().register(self)
        localPlayer = GKLocalPlayer.localPlayer()


    }

最后你的身份验证功能应该是这样的。

// authenticate local player :: Just Authentication
func authenticatePlayer(completionHandler: @escaping (_ resultedPlaces: Bool) -> Void) {

    localPlayer = GKLocalPlayer.localPlayer()


    localPlayer.authenticateHandler =
        { (viewController , error ) -> Void in
            if viewController != nil
            {
                self.present(viewController!, animated:true, completion: nil)
            }
            else
            {
                if self.localPlayer.isAuthenticated
                {

                    completionHandler(true);
                }
                else
                {
                    completionHandler(false);


                    print("not able to authenticate fail")
                    self.gameCenterEnabled = false

                    if (error != nil)
                    {
                        print("\(error.debugDescription)")
                    }
                    else
                    {
                        print(    "error is nil")
                    }
                }
            }

    }
}

注意：GKLocalPlayerListener 无法在模拟器上运行。

Answer 2

仅供参考，如果您想了解如何在回合制 GameKit 比赛中使用 GKLocalPlayerListener 的工作示例，欢迎您查看此 example project for a turn based game。我希望它有助于在上下文中查看所有部分。

无法将 GKTurnBasedEventListener 设置为我的 ViewController 的委托？

GKTurnBasedEventListener could not be set to delegate of my ViewController?

gamekit

ios

game-center

gkturnbasedmatch

swift