Android WebSocket通信通过Service来绑定

最近的一个项目使用到了WebSocket 找了半天最终选择这个开源项目。
http://my.oschina.net/1123581321/blog/333031
代码如下

import de.tavendo.autobahn.WebSocketConnection;
import de.tavendo.autobahn.WebSocketException;
import de.tavendo.autobahn.WebSocketHandler;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

public WebSocketConnection  wsC = new WebSocketConnection();public Handler handler = new Handler(){    @Override    public void handleMessage( Message msg )    {        super.handleMessage( msg );        if ( msg.what == 0 )        {        }    }};public void toastLog( String s ){    Toast.makeText( this, s, Toast.LENGTH_SHORT ).show();}private void wsStart(){    try {        wsC.connect( wsUrl, new WebSocketHandler()                 {                     @Override                     public void onOpen()                     {                         toastLog( "Status: Connected to " + wsUrl );                         wsC.sendTextMessage( "Hello, world!" );                     }                     @Override                     public void onTextMessage( String payload )                     {                         toastLog( "Got echo: " + payload );                     }                     @Override                     public void onClose( int code, String reason )                     {                         toastLog( "Connection lost." );                     }                 } );    } catch ( WebSocketException e ) {        e.printStackTrace();    }}@Overrideprotected void onCreate( Bundle savedInstanceState ){    super.onCreate( savedInstanceState );    setContentView( R.layout.activity_main );    wsStart();    Button wsSend = (Button) findViewById( R.id.wsSend );    wsSend.setOnClickListener( new View.OnClickListener()                    {                        @Override                        public void onClick( View v )                        {                            wsC.sendTextMessage( "ooxx" );                        }                    } );}@Overrideprotected void onDestroy(){    super.onDestroy();    if ( wsC.isConnected() )    {        wsC.disconnect();    }}@Overridepublic boolean onCreateOptionsMenu( Menu menu ){    /* Inflate the menu; this adds items to the action bar if it is present. */    getMenuInflater().inflate( R.menu.main, menu );    return(true);}@Overridepublic boolean onOptionsItemSelected( MenuItem item ){    /*     * Handle action bar item clicks here. The action bar will     * automatically handle clicks on the Home/Up button, so long     * as you specify a parent activity in AndroidManifest.xml.     */    int id = item.getItemId();    if ( id == R.id.action_settings )    {        return(true);    }    return(super.onOptionsItemSelected( item ) );}

}

上面的按照使用就好。配置好远程地址，端口号。就基本能够通信了。如果直接放到acvity里面会出现Socket断掉的情况。鉴于此。我把他放到Service里面来跑.Service 代码如下：

package com.micro_chat.service;

import android.annotation.TargetApi;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Binder;
import android.os.Build;
import android.os.IBinder;
import android.util.Log;

import de.tavendo.autobahn.WebSocketConnection;
import de.tavendo.autobahn.WebSocketConnectionHandler;
import de.tavendo.autobahn.WebSocketException;
import android.app.Service;
import android.widget.Toast;

import com.micro_chat.MainActivity;
import com.micro_chat.R;
import com.micro_chat.api.Apiapp;
import com.micro_chat.base.BaseActivity;
import com.micro_chat.uilit.ACache;

import org.json.JSONException;
import org.json.JSONObject;

/**
* Created by moye on 2016/6/24.
*/
public class SosWebSocketClientService extends Service{
private final String TAG = “SosWebSocketClientService”;
private final WebSocketConnection mConnection = new WebSocketConnection();
private final IBinder mBinder = new SosWebSocketClientBinder();
NotificationManager mNM;
private static final String TAGE = “weiliaoService”;
private static int NOTIFY_ID = 1000;
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}

@Overridepublic void onCreate() {    mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);    initWebSocket();    super.onCreate();    Log.d(TAGE, "Service Create");}@Overridepublic int onStartCommand(Intent intent, int flags, int startId) {    return START_STICKY;}/** * 销毁 */@Overridepublic void onDestroy() {    if (mConnection.isConnected()) {        mConnection.disconnect();    }    super.onDestroy();    Log.d(TAGE, "Service Destroy");}private void initWebSocket(){    {        try {            mConnection.connect(Apiapp.wsuri, new WebSocketConnectionHandler() {                @Override                public void onOpen() {                    Log.d(TAGE, "Status: Connected to " + Apiapp.wsuri);                }                @Override                public void onTextMessage(String payload) {                    //接受服务器消息                    Log.d(TAGE,"Status: Over msg"+payload);                    try {                        JSONObject jsonObject = new JSONObject(payload);                        }                    } catch (JSONException e) {                        // TODO Auto-generated catch block                        e.printStackTrace();                        initWebSocket();                        Toast.makeText(BaseActivity.activity,"服务器已经重连！",Toast.LENGTH_LONG).show();                       // restartApplication();                    }                }                @Override                public void onClose(int code, String reason) {                    //关闭服务器链接                    Log.d(TAGE, "Status: Connection lost" + reason);                    //Toast.makeText(BaseActivity.activity,"Connection lost="+reason,Toast.LENGTH_LONG).show();                    //restartApplication();                    initWebSocket();                    Toast.makeText(BaseActivity.activity,"服务器已经重连！",Toast.LENGTH_LONG).show();                }            });        } catch (WebSocketException e) {            Log.d(TAGE, e.toString());            //restartApplication();            initWebSocket();        }    }}private void restartApplication() {    final Intent intent = getPackageManager().getLaunchIntentForPackage(getPackageName());    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);    startActivity(intent);}public class SosWebSocketClientBinder extends Binder {    public SosWebSocketClientService getService() {        return SosWebSocketClientService.this;    }    public void sendXxx(String addr){        if(mConnection.isConnected())            mConnection.sendTextMessage(addr);    }}/*** * 发送通知 * @param context * @param title * @param contentText */@TargetApi(Build.VERSION_CODES.JELLY_BEAN)public static void sendNotification(Context context,String title,String contentText){    NotificationManager notifyMgr= (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);    Intent resultIntent = new Intent(context, MainActivity.class);//MainActivity  GetMesgActivity    resultIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);    PendingIntent pi = PendingIntent.getActivity(context, 0,resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);    Notification notification = new Notification.Builder(context)            .setSmallIcon(R.mipmap.icon)            .setTicker("点击查看消息")            .setContentTitle(title)            .setContentText(contentText)            .setContentIntent(pi)            .setDefaults(Notification.DEFAULT_ALL)//DEFAULT_VIBRATE            .build();    notification.flags |= Notification.FLAG_AUTO_CANCEL; 

notifyMgr.notify(NOTIFY_ID, notification);
}
}

在activity 里面启动服务。

Intent intent = new Intent(this, WebSocketClientService.class);
startService(intent);
bindService(intent, conn, Context.BIND_AUTO_CREATE);

private ServiceConnection conn = new ServiceConnection() {

    @Override    public void onServiceDisconnected(ComponentName name) {        // TODO Auto-generated method stub    }    @Override    public void onServiceConnected(ComponentName name, IBinder service) {

// // TODO Auto-generated method stub这里面发送消息通过Service
WebSocketClientService.WebSocketClientBinder binder = (WebSocketClientService.WebSocketClientBinder)iBinder;
binder.sendXxx(SentMsg);

    }};

“`
以上基本就实现了通过服务来开启WebSocket了。当然也有服务停止的时候，这时就是展现你的聪明才智的时候了，本人愚昧只能使用定时器来防止服务死掉了。如果有更好的建议欢迎留言给我。

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