问GKPeerPickerController被否决

EN

当我使用这个代码GKPeerPickerController、GKSession和GKPeerConnectionState时，我遇到了问题

我得到的错误是:不推荐GKPeerPickerController :在IOS 7中第一次弃用

我的守则是：

-(ReceiveData) receiveData:(NSData *)data fromPeer:(NSString *)peer inSession:(GKSession *)会话上下文：( NSString *)context { NSKeyedUnarchiver *archiver=[NSKeyedUnarchiver allocinitForReadingWithData:data]；NSString *str=archiver decodeObjectForKey:@"Text"；self adicionarTexto:str fuiEu:NO；}NSString*)self：(NSString *)peerID toSession:(GKSession *)会话{peerID= session；peerID= self；会话setDataReceiveHandler:self session.delegate : nil；=nil；} -(void)peerPickerControllerDidCancel:(GKPeerPickerController *)选择器{ picker.delegate = nil；conectado=NO；}-(GKSession*)会话对等点：(NSString *)peerID didChangeState：(GKPeerConnectionState)状态{ if (state==GKPeerStateConnected) { conectado=YES；

    }else{
        conectado=NO;

    }
    [self atualizarBarra];
}

和

 -(void)peerPickerController:(GKPeerPickerController *)picker didConnectPeer:(NSString *)peerID toSession:(GKSession *) session {
 currentSession = session; session.delegate = self; [session
 setDataReceiveHandler:self withContext:nil]; picker.delegate = nil;
 [picker dismiss]; }

和

-(void)conectar{ if (conectado==NO) { BTpicker = [GKPeerPickerController alloc init]；BTpicker.delegate = self；BTpicker.connectionTypesMask = GKPeerPickerConnectionTypeNearby；BTpicker show；}BTpicker.delegate{ currentSession disconnectFromAllPeers；}

我需要快速的帮助：