我使用 signalR android 实现: https://github.com/erizet/SignalA我在使用它时遇到一些问题。

我像这样初始化我的 HubConnection:

String url = "http://www.myurl.com"; 
con = new HubConnection(url, getActivity(), new LongPollingTransport()) 
{ 
    @Override 
    public void OnStateChanged(StateBase oldState, StateBase newState) { 
        switch(newState.getState()) 
        { 
        case Connected: 
 
            ArrayList<String> test = new ArrayList<String>(); 
            test.add("header"); 
            test.add("0"); 
            test.add("data"); 
            test.add("pleyh"); 
 
            hub.Invoke("SendConnection", test, new HubInvokeCallback() { 
 
                @Override 
                public void OnResult(boolean arg0, String arg1) { 
                    Log.i("HubConnection", "On result: arg0 = " + arg0 + " arg1 = " + arg1); 
                } 
 
                @Override 
                public void OnError(Exception arg0) { 
                    Log.i("HubConnection", "On error: arg0 = " + arg0.getMessage()); 
                } 
            }); 
            break; 
        case Disconnected: 
            Log.i("HubConnection", "Disconnected"); 
            stopSignalA(); 
            break; 
        default: 
            break; 
        } 
    } 

之后，我初始化 HubProxy 并开始连接:

try { 
    hub = con.CreateHubProxy("GameManager"); 
 
} catch (OperationApplicationException e) { 
    e.printStackTrace(); 
} 
hub.On("addNewMessageToPage", new HubOnDataCallback()  
{ 
    @Override 
    public void OnReceived(JSONArray args) { 
        Log.i("HubConnection", "OnReceived " + args.toString()); 
        for(int i=0; i<args.length(); i++) 
        { 
            Log.i("HubConnection", "OnReceived -> addNewMessageToPage = " + args.opt(i).toString()); 
        } 
    } 
}); 
con.Start(); 

似乎一切正常，因为协商成功并且我收到了带有 ConnectionToken 的 JSON。问题是当我收到 OnStateChanged 时进行调用时，当我知道我已连接时，

我收到此错误:

{"I":"0","E":"'SendConnection' method could not be resolved.","T":"   at 

Microsoft.AspNet.SignalR.Hubs.NullMethodDescriptor.b_0(IHub emptyHub, Object[] emptyParameters)\r\n at Microsoft.AspNet.SignalR.Hubs.HubDispatcher.Incoming(IHubIncomingInvokerContext context)\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.AspNet.SignalR.Hubs.HubPipelineModule.<>c_DisplayClass1.<b_0>d_3.MoveNext()"}

这是我发送到服务器的内容:

{"H":"gamemanager","A":["header","0","data","user"],"M":"SendConnection","I":"0"} 

该错误表明方法“SendConnection”不存在，但它确实存在。有人已经遇到这个问题了吗？还是我的代码有问题？提前致谢!

编辑1:

集线器上的定义和方法定义:

public class GameManager : Hub 
    { 
        [HubMethodName("sendConnection")] 
        public void SendConnection(string Json) 
        { 
            Clients.Client(Context.ConnectionId).addNewMessageToPage("[SendConnection] Connection Established: " + Json); 
        } 
 
        [HubMethodName("sendToRoom")] 
        public void SendToRoom(string message) 
        { 
            Clients.Group(FindRoomFromConnectionId()._room).addNewMessageToPage("[sendToRoom]: " + message); 
        } 
    } 

请您参考如下方法:

您可以粘贴您尝试调用的代码吗？看来您调用的方法名称有问题。还给出集线器方法定义。