Android：开机自启动并接收推送消息

接收推送消息部分我们通过ZeroMQ实现，可以参考http://www.cnblogs.com/ilovewindy/p/3984283.html。

首先是开机自启动的功能实现，代码如下：
1.    AndroidManifest.xml中添加如下代码：

 <!-- 抓取系统启动事件 -->
 <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

 <application>
 …..
     <service
             android:name="com.demo.notification.NotificationService"
             android:icon="@drawable/icon"
             android:label="@string/app_name" >
     </service>

     <receiver android:name="com.demo.notification.MyScheduleReceiver" >
         <intent-filter>
             <action android:name="android.intent.action.BOOT_COMPLETED" />
         </intent-filter>
     </receiver>
 </application>

2.    接着是实现MyScheduleReceiver代码，这是当Android启动后会自动启动的程序。

 public class MyScheduleReceiver extends BroadcastReceiver {

     @Override
     public void onReceive(Context context, Intent intent) {

         Intent service = new Intent(context, NotificationService.class);
         context.startService(service);
     }
 }

3.    实现NotificationService代码，用来接收推送消息

 public class NotificationService  extends Service {
     private final IBinder mBinder = new MyBinder();

     @Override
     public int onStartCommand(Intent intent, int flags, int startId) {
            // 将接收推送消息任务放入后台执行
         new ZeroMQMessageTask().execute();

         return Service.START_STICKY;
     }

     @Override
     public IBinder onBind(Intent arg0) {
         return mBinder;
     }

     public class MyBinder extends Binder {
         public NotificationService getService() {
             return NotificationService.this;
         }
     }

     private class ZeroMQMessageTask extends AsyncTask<String, Void, String> {

         public ZeroMQMessageTask() {
         }

         @Override
         protected String doInBackground(String... params) {

             ZMQ.Context context = ZMQ.context(1);
             ZMQ.Socket subscriber = context.socket(ZMQ.SUB);
             subscriber.subscribe(ZMQ.SUBSCRIPTION_ALL);
             subscriber.connect("tcp://x.x.x.x:xxxx");
             while (true) {                  // 通过不终止的循环来保证接收消息
                 message = subscriber.recvStr();
                 if (!message.equals("0")) {  // 0是由我自己定义的空消息标识，可以替换成自定义的其它标识

                     // 显示推送消息
                     String ns = Context.NOTIFICATION_SERVICE;
                     NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);

                     int icon = R.drawable.icon;
                     CharSequence tickerText = "Demo - " + message;
                     long when = System.currentTimeMillis();

                     Notification notification = new Notification(icon,
                             tickerText, when);
                     notification.flags |= Notification.FLAG_AUTO_CANCEL;
                     Context uiContext = getApplicationContext();
                     CharSequence contentTitle = "Demo";
                     CharSequence contentText = message;
                     Intent notificationIntent = new Intent(uiContext,
                             NotificationService.class);
                     PendingIntent contentIntent = PendingIntent
                             .getActivity(uiContext, 0, notificationIntent, 0);

                     notification.setLatestEventInfo(uiContext, contentTitle,
                             contentText, contentIntent);

                     mNotificationManager.notify(1, notification);
                 }
             }
         }

         @Override
         protected void onPostExecute(String result) {
         }
     }
 }

好啦，重新启动手机尝试发条消息吧！ :D

服务器端的代码可以参考此文：http://www.cnblogs.com/ilovewindy/p/3998862.html