Question

我正在努力在我的游戏中集成基于回合的匹配，几天前我开始从GameKit API中得到奇怪的错误，说本地玩家没有经过身份验证，即使他是。

当我启动应用程序时，会调用authenticateHandler，显示视图控制器，输入密码后，再次调用authenticaHandler并且本地播放器似乎已经过身份验证。 isAuthenticated会返回YES。

但是一旦我开始使用任何GameKit API（如loadFriendsWithCompletionHandler:），就会返回一个错误，说明该播放器尚未经过身份验证。

这是处理身份验证更改的代码。

[[GKLocalPlayer localPlayer] setAuthenticateHandler:^(UIViewController *viewController, NSError *error) {
    if ([[GKLocalPlayer localPlayer] isAuthenticated]) {
        // Player authenticated
    } else {
        // Player not authenticated

        if (viewController != nil) {
            // Present view controller
        }
    }
}];

这是我在调用任何GameKit方法时收到的错误消息。请注意，返回错误时-isAuthenticated仍会返回YES。

找到匹配时出错：错误Domain = GKErrorDomain Code = 6＆＃34;由于本地播放器尚未通过身份验证，因此无法完成请求的操作。＆＃34; UserInfo = 0x14e9f950 {NSLocalizedDescription =由于本地播放器未经过身份验证，因此无法完成请求的操作。}

（lldb）print（BOOL）[[GKLocalPlayer localPlayer] isAuthenticated] （BOOL）3美元=是

我在Game Center沙盒中进行测试，几天前就开始了。以前，我根本没有遇到过这个问题应用程序启动时，它只发生三次中的一次。我尝试删除应用程序，重新启动设备，清理构建文件夹以及我能想到的其他所有内容。

我是否遗漏了某些东西，或者是否有其他人遇到类似的问题？

Answer 1

这个丰富的Apple documentation是一个值得关注的好地方。以下是我建议的两件事 -

如果您的设备有，则游戏中心无法完成身份验证错误的日期。所以，请继续检查当前日期。
你可能已经这样做了。我相信你 - iOS模拟器＆gt;＆gt;重启内容和设置

您认为使用-[GKLocalPlayer loadFriendsWithCompletionHandler:]的方式可能有问题吗？您的身份验证功能没有任何问题，但如果适合您，我很乐意与您分享 -

-(void)authenticateLocalPlayer{

    // Instantiate a GKLocalPlayer object to use for authenticating a player.
    GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];

    localPlayer.authenticateHandler = ^(UIViewController *viewController, NSError *error){
        if (viewController != nil) {

            // If it's needed display the login view controller.
            [self presentViewController:viewController animated:YES completion:nil];

        }
        else {
            if ([GKLocalPlayer localPlayer].authenticated) {
                // If the player is already authenticated then indicate that the Game Center features can be used.

                _gameCenterEnabled = YES;

            }

            else {
                _gameCenterEnabled = NO;
            }
        }
    };
}

Answer 2

您为什么使用Game Kit Framework？从iOS 7开始，您应该使用MultipeerConnectivity。

1） - authenticateWithCompletionHandler：在iOS 6.0中不推荐使用。如果你在iOS 7上测试它可能根本不起作用。

2）下面通过MultipeerConnectivity创建连接的示例

客户端：

- (id)init {
self = [super init];
    if (self) {
        NSString *peerName = [NSString stringWithFormat:@"%@-%@", @"Client", [[UIDevice currentDevice] identifierForVendor].UUIDString];
        self.myPeerID = [[MCPeerID alloc] initWithDisplayName:peerName];

        self.servers = [NSMutableArray array];

        self.session = [[MCSession alloc] initWithPeer:self.myPeerID securityIdentity:nil encryptionPreference:MCEncryptionNone];
        self.session.delegate = self;
        self.browser = [[MCNearbyServiceBrowser alloc] initWithPeer:self.myPeerID serviceType:@"Connect"];
        self.browser.delegate = self;
        [self.browser startBrowsingForPeers];
  }
  return self;
}
//-----
- (void)browser:(MCNearbyServiceBrowser *)browser foundPeer:(MCPeerID *)peerID withDiscoveryInfo:(NSDictionary *)info {
        NSLog(@"client: found a server: %@", peerID);
        [self.browser invitePeer:peerID toSession:self.session withContext:nil timeout:10];

}

- (void)browser:(MCNearbyServiceBrowser *)browser lostPeer:(MCPeerID *)peerID {
        NSLog(@"client: lost server: %@", peerID);
}

#pragma mark - MCSessionDelegate
- (void)session:(MCSession *)session peer:(MCPeerID *)peerID didChangeState:(MCSessionState)state {
        NSLog(@"client: status changed to %d for server: %@", state, peerID.displayName);

        switch (state) {
         case MCSessionStateNotConnected: {

        }
             break;
         case MCSessionStateConnected: {

        }
             break;
         default:
             break;
        }
  }

   - (void)session:(MCSession *)session didReceiveData:(NSData *)data fromPeer:(MCPeerID *)peerID {
        NSLog(@"client: received data (len = %lu) from server %@",(unsigned long)[data length], peerID.displayName);
        NSDictionary *receiveDictionary = (NSDictionary*) [NSKeyedUnarchiver unarchiveObjectWithData:data];

    }

服务器：

- (id)init {
    self = [super init];
        if (self) {
            NSString *peerName = [NSString stringWithFormat:@"%@-%@", @"Server", [[UIDevice currentDevice] identifierForVendor].UUIDString];
            self.myPeerID = [[MCPeerID alloc] initWithDisplayName:peerName];

            self.session = [[MCSession alloc] initWithPeer:self.myPeerID];
            self.session.delegate = self;

            self.advertiser = [[MCNearbyServiceAdvertiser alloc] initWithPeer:self.myPeerID
                                                                discoveryInfo:nil
                                                                  serviceType:@"Connect"];
            self.advertiser.delegate = self;
           [self.advertiser startAdvertisingPeer];
         }
     return self;
}

#pragma mark - MCNearbyServiceAdvertiserDelegate

- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didReceiveInvitationFromPeer:(MCPeerID *)peerID withContext:(NSData *)context invitationHandler:(void(^)(BOOL accept, MCSession *session))invitationHandler {
     NSLog(@"server: did receive invitation from peer %@", peerID.displayName);
     invitationHandler(YES, self.session);
 }

- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didNotStartAdvertisingPeer:(NSError *)error {
      NSLog(@"server: error %@", error);
 }

 #pragma mark - MCSessionDelegate

 - (void)session:(MCSession *)session peer:(MCPeerID *)peerID didChangeState:(MCSessionState)state {
      NSLog(@"server: status changed to %ld for client: %@", state, peerID.displayName);

      switch (state) {
       case MCSessionStateConnected: {   
           NSMutableDictionary *sendDict = [NSMutableDictionary dictionary];
           NSError *error = nil;
           [self.session sendData:[NSKeyedArchiver archivedDataWithRootObject:sendDict]
                           toPeers:@[peerID]
                          withMode:MCSessionSendDataReliable
                             error:&error];
         }
           break;
        case MCSessionStateNotConnected:
         break;
        default:
         break;
       }
       NSLog(@"connectedPeers %@", self.session.connectedPeers);
   }

   - (void)session:(MCSession *)session didReceiveData:(NSData *)data fromPeer:(MCPeerID *)peerID {
       NSLog(@"server: received data (len = %lu) from client %@", (unsigned long)[data length], peerID.displayName);

       NSDictionary *dictionary = (NSDictionary*) [NSKeyedUnarchiver unarchiveObjectWithData:data];

    }

    - (void)session:(MCSession *)session didReceiveStream:(NSInputStream *)stream withName:(NSString *)streamName fromPeer:(MCPeerID *)peerID {
    }

    - (void)session:(MCSession *)session didStartReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID withProgress:(NSProgress *)progress {
    }

    - (void)session:(MCSession *)session didFinishReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID atURL:(NSURL *)localURL withError:(NSError *)error {
    }

    - (void)session:(MCSession*)session didReceiveCertificate:(NSArray*)certificate fromPeer:(MCPeerID*)peerID certificateHandler:(void (^)(BOOL accept))certificateHandler {
          certificateHandler(YES);
    }

GKLocalPlayer身份验证不起作用，但isAuthenticated返回YES（Game Center沙箱）

2 个答案: