如何在android服务中建立WebSocket连接

Question

我一直在尝试创建一个android服务，这将允许我保持一个websocket连接和发送一些数据的时间。我在服务中创建了一个处理程序来连接WebSocketClient。但这并不是连接。url是工作的，我已经测试过了。如果有人能帮忙，我将不胜感激。

主要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));
    }

}

服务实现

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();
    }
}

我从按钮单击事件中调用主活动中的start服务方法。输出总是迅速转向关闭，最后显示为超时。我想知道是什么原因呢?

Answer 1

我们使用的websocket客户端不是那么健壮，尝试使用引擎IO客户端，我的项目，伟大的性能https://github.com/nkzawa/engine.io-client.java并非所有客户端都与您的服务器兼容检查服务器上正在使用的是什么，并且该连接应该在服务器和客户端上使用不同的库进行复制，这会导致连接中断