Android中让Service被关闭后再重新启动

---------------------------------------------------------------------------

转载：http://blog.csdn.net/arui319

---------------------------------------------------------------------------

如何做到开机启动？

只要实现一个BroadcastReceiver，监听手机启动完成的事件ACTION_BOOT_COMPLETED即可。需要注意的是，好像不能用模拟器，要用手机测试。

那如何做到启动一个Service，并且在用户关闭后能自动又启动了呢？

一般的，都会在上面说到的BroadcastReceiver的实现里面，监听手机启动完成后，启动一个Service，这是一般的做法。问题是，用户可以关闭掉该Service。那么怎样才能使它被关闭掉以后，再次启动呢？聪明的你一定立即就想到了，如果不直接启动Service，而是启动一个timmer，或者alarmManager，然后每隔一段时间去启动Service，就可以了。

package com.arui.framework.android.daemonservice;    import android.app.AlarmManager;  import android.app.PendingIntent;  import android.content.BroadcastReceiver;  import android.content.Context;  import android.content.Intent;  import android.os.SystemClock;    public class BootBroadcast extends BroadcastReceiver {        @Override      public void onReceive(Context context, Intent mintent) {            if (Intent.ACTION_BOOT_COMPLETED.equals(mintent.getAction())) {              // 启动完成              Intent intent = new Intent(context, Alarmreceiver.class);              intent.setAction("arui.alarm.action");              PendingIntent sender = PendingIntent.getBroadcast(context, 0,                      intent, 0);              long firstime = SystemClock.elapsedRealtime();              AlarmManager am = (AlarmManager) context                      .getSystemService(Context.ALARM_SERVICE);                // 10秒一个周期，不停的发送广播              am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, firstime,                      10 * 1000, sender);          }        }  }

package com.arui.framework.android.daemonservice;    import android.content.BroadcastReceiver;  import android.content.Context;  import android.content.Intent;    public class Alarmreceiver extends BroadcastReceiver {      @Override      public void onReceive(Context context, Intent intent) {            if (intent.getAction().equals("arui.alarm.action")) {              Intent i = new Intent();              i.setClass(context, DaemonService.class);              // 启动service               // 多次调用startService并不会启动多个service 而是会多次调用onStart              context.startService(i);          }      }  }

    package com.arui.framework.android.daemonservice;            import android.app.Service;      import android.content.Intent;      import android.os.IBinder;      import android.util.Log;            public class DaemonService extends Service {                @Override          public IBinder onBind(Intent intent) {              return null;          }                @Override          public void onCreate() {              super.onCreate();              Log.v("=========", "***** DaemonService *****: onCreate");          }                @Override          public void onStart(Intent intent, int startId) {              Log.v("=========", "***** DaemonService *****: onStart");              // 这里可以做Service该做的事          }      }

    <receiver           android:name=" com.arui.framework.android.daemonservice.BootBroadcast"          android:permission="android.permission.RECEIVE_BOOT_COMPLETED">          <intent-filter>              <action android:name="android.intent.action.BOOT_COMPLETED" />          </intent-filter>      </receiver>      <receiver           android:name=" com.arui.framework.android.daemonservice.Alarmreceiver" >          <intent-filter>              <action android:name="arui.alarm.action" />          </intent-filter>      </receiver>            <service                android:name=" com.arui.framework.android.daemonservice.DaemonService" >            </service>

更多相关文章

随机推荐