Question

我正在尝试使用Game Kit通过蓝牙连接两个设备。第一个设备正在运行一个应用程序，其中包含以下代码：

-(void)connect
{
    GKPeerPickerController*     picker;

    picker = [[GKPeerPickerController alloc] init];
    picker.delegate = self;
    //picker.connectionTypesMask = GKPeerPickerConnectionTypeNearby;
    picker.connectionTypesMask = GKPeerPickerConnectionTypeNearby;
    [picker show];

}
- (void)viewDidLoad {
    [super viewDidLoad];
    peerStatus = kServer;
    gamePacketNumber = 0;
    currentSession = nil;
    gamePeerId = nil;


    NSString *uid = [[UIDevice currentDevice] uniqueIdentifier];

    gameUniqueID = [uid hash];
    [self connect]; 

}

- (void)peerPickerController:(GKPeerPickerController *)picker didSelectConnectionType:(GKPeerPickerConnectionType)type {
    // GKSessionModeClient
   // GKSessionModeServer
    [self.currentSession initWithSessionID:kTankSessionID displayName:nil sessionMode:GKSessionModeClient];
    currentSession.available = YES;
    currentSession.delegate = self;

}

- (void)peerPickerController:(GKPeerPickerController *)picker didConnectPeer:(NSString *)peerID toSession:(GKSession *)session
{
     self.gamePeerId= peerID;
    //self.currentSession = session;

    self.currentSession.delegate = self;
    [self.currentSession setDataReceiveHandler: self withContext:nil];

    // Remove the picker.
    picker.delegate = nil;
    [picker dismiss];
    [picker autorelease];
    // Start your game
}

- (void)peerPickerControllerDidCancel: (GKPeerPickerController *)picker
{
      NSLog(@"peerPickerControllerDidCancel");
    picker.delegate = nil;
    [picker autorelease];

}


- (void)session: (GKSession*)session peer:(NSString*)peerID didChangeState:(GKPeerConnectionState)state
{
     NSLog(@"finding and connecting to others sessions");
    if(state    == GKPeerStateAvailable){
        NSLog(@"aviable and ready to conect");
        [session connectToPeer:peerID withTimeout:60];
        session.available =NO; //put YES si volem multiconexions sino es tancarà la sesio en conectarse 2
    }
}

- (void)session:(GKSession *)session didReceiveConnectionRequestFromPeer:(NSString *)peerID{
     NSLog(@"lisetn for others sessions");
    NSError *error=nil;
    if(amAcceptingConnetions){
        if(![session acceptConnectionFromPeer:peerID error:&error]){
            //Handler error
        }
    }else{
        [session denyConnectionFromPeer:peerID];
    }

}

第二个设备正在运行另一个使用与上面相同代码的应用程序，只更改了以下部分：

[self.currentSession initWithSessionID:kTankSessionID displayName:nil sessionMode:GKSessionModeServer];

两者都显示正常窗口，表示他们正在搜索其他设备，但这两个设备无法识别。这可能有什么问题？

Answer 1

如果尚未分配currentSession，则需要分配它。也许尝试改变：

[self.currentSession initWithSessionID:kTankSessionID displayName:nil sessionMode:GKSessionModeClient];

对此：

self.currentSession = [[GKSession alloc] initWithSessionID:kTankSessionID displayName:nil sesssionMode:GKSessionModeClient];

您可能还想添加一个检查以查看会话是否已分配，并在创建新会话之前将其释放。如果您每次设备尝试连接时重置会话，而不是重复使用同一会话，我注意到性能和可靠性方面的一些改进。

Answer 2

您还必须导入PeerPickerController以及GameKit / Gamekit.h。如果您想了解更多信息，请参阅this link。

或

http://www.devx.com/wireless/Article/43502/0/page/1

为什么我的设备无法使用此Game Kit连接代码找到对方？

2 个答案: