Java – how to establish websocket connection in Android service?
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Java
I've been trying to create an Android service that will allow me to maintain a websocket connection and send some data in time I create a handler in the service to connect to websocketclient But it's not connected The website is running and I tested it I would appreciate it if anyone could help me
Main activity java
import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.view.View; import android.widget.TextView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); BroadcastReceiver receiver=new BroadcastReceiver() { @Override public void onReceive(Context context,Intent intent) { TextView text=(TextView) findViewById(R.id.textView); text.setText(intent.getStringExtra("msg")); } }; registerReceiver(receiver,new IntentFilter(SocketService.BROADCAST_ACTION)); } // Method to start the service public void startService(View view) { startService(new Intent(getBaseContext(),SocketService.class)); } // Method to stop the service public void stopService(View view) { stopService(new Intent(getBaseContext(),SocketService.class)); } }
Service implementation
import android.app.Service; import android.content.BroadcastReceiver; import android.content.Intent; import android.os.Handler; import android.os.IBinder; import android.util.Log; import android.widget.Toast; import org.java_websocket.client.WebSocketClient; import org.java_websocket.handshake.ServerHandshake; import java.net.URI; import java.util.logging.LogRecord; public class SocketService extends Service { boolean status=false; public static final String BROADCAST_ACTION = "com.supun.broadcasttest"; BroadcastReceiver broadcaster; BroadcastReceiver broadreciever; Intent intent; Handler handler; WebSocketClient client; @Override public IBinder onBind(Intent intent) { return null; } @Override public void onCreate() { super.onCreate(); intent=new Intent(BROADCAST_ACTION); handler=new Handler(); } @Override public int onStartCommand(final Intent intent,int flags,int startId) { Toast.makeText(this,"Service Started",Toast.LENGTH_LONG).show();// Let it continue running until it is stopped. //////////////////////////////////////////////////////////////////////////////// try { client = new WebSocketClient(new URI( "ws://xxxxxxx-xxxx.rhcloud.com:8000/browser")) { @Override public void onOpen(ServerHandshake handshakedata) { Log.d("1","open"); status = true; } @Override public void onMessage(String message) { Log.d("reply",message); intent.putExtra("msg",message); sendBroadcast(intent); } @Override public void onError(Exception ex) { // TODO Auto-generated method stub } @Override public void onClose(int code,String reason,boolean remote{ status = false; } }; }catch(Exception e){ } /////////////////////////////////////////////////////////////////////////////// // handler.removeCallbacks(runnable); handler.postDelayed(runnable,1000); return START_STICKY; } private Runnable runnable=new Runnable() { @Override public void run() { client.connect(); for(int i=0; i<5;i++){ if(status){ intent.putExtra("msg","open"); sendBroadcast(intent); break; }else{ try { intent.putExtra("msg",client.getReadyState().toString()); sendBroadcast(intent); Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } } if (!status) { intent.putExtra("msg","Time Out"); sendBroadcast(intent); } } }; @Override public void onDestroy() { super.onDestroy(); Toast.makeText(this,"Service Destroyed",Toast.LENGTH_LONG).show(); } }
I am calling the start service method in main activity through the button click event The output always goes quickly to closing and is finally displayed as timed out I wonder what might be the reason?
Solution
The websocket client you are using is not a powerful attempt to use the engine IO client I used for the project, with excellent performance
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