2

如果我在两个 ios 设备中多次连接和断开蓝牙，我会得到重复的 peername。

有没有办法在 gkpeerpickercontroller 中为蓝牙聊天应用程序获取唯一对等点的单一名称。

还附上了它的屏幕截图。 出现多个重复对等体

我正在使用下面的代码来显示 GKPeerPickerController。

-(IBAction)btnConnectClicked:(id)sender
 {
    [self openPeerPickerController];
 }

-(IBAction)btnDisconnectClicked:(id)sender
{
    [currentSession disconnectFromAllPeers];
}
-(void)openPeerPickerController
{
    if (!currentSession)
    {
        GKPeerPickerController *peerPicker2 = [[GKPeerPickerController alloc] init];
        peerPicker2.delegate = self;
        peerPicker2.connectionTypesMask = GKPeerPickerConnectionTypeNearby;
        [peerPicker2 show];
    }
}

-(void)peerPickerController:(GKPeerPickerController *)picker didConnectPeer:(NSString *)peerID toSession:(GKSession *) session
{
    NSLog(@"Peer session connected");
    //set session delegate and dismiss the picker
    session.delegate = self;
    currentSession = session;
picker.delegate = nil;
    [picker dismiss];
}
- (GKSession *)peerPickerController:(GKPeerPickerController *)picker sessionForConnectionType:(GKPeerPickerConnectionType)type
{
    //create ID for session
    NSString *sessionIDString = @"MTBluetoothSessionID";
    //create GKSession object
    GKSession *session = [[GKSession alloc] initWithSessionID:sessionIDString displayName:nil sessionMode:GKSessionModePeer];
    return session;
}

-(void)peerPickerControllerDidCancel:(GKPeerPickerController *)picker
{
    NSLog(@"Peer cancelled");
    [currentSession disconnectFromAllPeers];
    currentSession=nil;
    picker.delegate = nil;
}
-(void)session:(GKSession *)session peer:(NSString *)peerID didChangeState:(GKPeerConnectionState)state
{
    switch (state)
    {
        case GKPeerStateAvailable:
        {
           // not connected to session, but available for connectToPeer:withTimeout:
        }
        break;

        case GKPeerStateUnavailable:
        {
            // no longer available
        }
            break;

        case GKPeerStateConnected:
        {
            // connected to the session
            [currentSession setDataReceiveHandler:self withContext:nil]; //set ViewController to receive data
        }
            break;

        case GKPeerStateDisconnected:
        {
            // disconnected from the session
            currentSession.delegate = nil;
            currentSession = nil; //allow session to reconnect if it gets disconnected
        }
            break;

        case GKPeerStateConnecting:
        {
            // waiting for accept, or deny response
        }
            break;

        default:
            break;
    }
}
4

1 回答 1

2

你的 GKPeerPickerControllerDelegate 方法

- (GKSession *)peerPickerController:(GKPeerPickerController *)picker sessionForConnectionType:(GKPeerPickerConnectionType)type

每次返回一个新会话。在您的情况下，它被调用两次，因此创建了两个会话。从文档中：

当对等选择器需要会话时，它会调用此方法。您的应用程序可以创建新会话或将先前创建的会话返回给对等选择器。

因此，您可以将会话声明为属性并编写一个 getter，然后在委托中返回会话属性，这将避免创建多个会话

@property (nonatomic, string) GKSession *session;
#define sessionIDString @"MTBluetoothSessionID"

- (GKSession) session {
    if(!_session) {
        //create GKSession object
        _session = [[GKSession alloc] initWithSessionID:sessionIDString displayName:nil sessionMode:GKSessionModePeer];
    }
    return _session;
}

并将委托方法更改为：

- (GKSession *)peerPickerController:(GKPeerPickerController *)picker sessionForConnectionType:(GKPeerPickerConnectionType)type {
    return self.session;
}

完成后确保取消会话。

于 2014-06-17T07:29:26.920 回答