Android两大组件：Service，BroadcastReceiver

public class ServiceTest extends Service {

@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}

@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
}
}

public class BootBroadcastReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
Intent serviceIntent = new Intent(context, ServiceTest.class); //显式调用
context.startService(serviceIntent); //Intent激活Service组件
}
}

<service android:name=".ServiceTest" />

<receiver android:name=".BootBroadcastReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>