Android - Autobahn Websocket Sending Message Error(nullpointerexception)

I am working on websocket communication with Autobahn. On the main.class of my app, I set to call 'connect()' when users click a button. // Toggle Button event tButton = (Togg

Solution 1:

public class WebSocket_Connector {

private static final String TAG = "ECHOCLIENT";
public final WebSocketConnection mConnection = new WebSocketConnection();
private String tmpString = "";
public void connect(final String wsuri) {

      Log.d(TAG, "Connecting to: " + wsuri); 

      try {
         mConnection.connect(wsuri, new WebSocketHandler() {

            @Override
            public void onOpen() {
               Log.d(TAG, "Status: Connected to " + wsuri ); 
               Log.d(TAG, "Connection successful!\n");
               mConnection.sendTextMessage(tmpString); 
               tmpString = "";
            }

            @Override
            public void onTextMessage(String payload) {
               Log.d(TAG, "Got echo: " + payload);
            }

            @Override
            public void onClose(int code, String reason) {
               Log.d(TAG, "Connection closed.");
            }
         });
      } catch (WebSocketException e) {

         Log.d(TAG, e.toString());
      }

 public void sendMessage(String message) {

    if (mConnection.isConnected()) 
            mConnection.sendTextMessage(message); 
    else {
       tmpString = message;
       connect("ws://192.168.x.xxx:xxxx");
    }

 }

 }