Android Open Source - BatteryNotification Battery Service

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License

The source code is released under:

GNU General Public License

Java Source Code

/* 
 * Copyright 2014 Julin Zaragoza /*from  w  w w.java  2  s  .c o m*/
 * 
 * This file is part of BN: Battery Notification
 * 
 * BN: Battery Notification is free software; you can redistribute it and/or modify it under the terms of the GNU 
 * General Public License as published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version. This program is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 
 * You should have received a copy of the GNU General Public License along with this program; if not, 
 * write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 */
package zarbel.bat.services;

import zarbel.bat.broadcastreceivers.Autostart;
import zarbel.bat.R;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.IBinder;
import android.preference.PreferenceManager;

/**
 * Main application thread
 * @author jzaragoza
 *
 */
public class BatteryService extends Service{

  public static final int SERVICE_ID = 1; //Service Id
  private static BatteryThread batteryThread; //Parallel thread that manages the battery level.
  private SharedPreferences config; //Application preferences
  private IntentFilter filter; //Intent filter for the broadcast receiver
  private BroadcastReceiver mReceiver; //Broadcast receiver for screen on event.
  
  @Override
  public IBinder onBind(Intent arg0) {
    return null;
  }

  /**
   * Stop service action
   */
  @Override
  public boolean stopService(Intent name) {

    //If the service thread has been created before, we interrupt it.
    if(batteryThread != null){
      batteryThread.interrupt();
      batteryThread = null;
    }
    return super.stopService(name);
  }

  @Override
  public void onDestroy() {

    //If the lifecycle onDestroy method is called, we must ensure that the service thread stops too (If has been created)
    if(batteryThread != null){
      batteryThread.interrupt();
      batteryThread = null;
    }
    unregisterScreenReceiver();
    super.onDestroy();
  }

  /**
   * Service creation action.
   */
  @Override
  public void onCreate() {

    //Getting shared preferences
    config = PreferenceManager.getDefaultSharedPreferences(this);
    
    //We create and star the service thread
    batteryThread = new BatteryThread(this);
    batteryThread.start();

    //We have to create the intentfilter to detect the screen on event.
    filter = new IntentFilter(Intent.ACTION_SCREEN_ON); //Intent filter creation
    filter.addAction(Intent.ACTION_SCREEN_OFF); //Adding action

    //If update on screen-on is enabled...
    if(config.getBoolean(getResources().getString(R.string.screenon), true)){
      registerScreenReceiver();
    }
    super.onCreate();
  }

  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    return START_STICKY; //Forcing to restart.
  }

  public void unregisterScreenReceiver(){
    try{
      unregisterReceiver(mReceiver);
    }catch(Exception e){}
  }

  public void registerScreenReceiver() {
    mReceiver = new Autostart();//Creating BroadcastReceiver 
    registerReceiver(mReceiver, filter); //Adding filter to receiver, and register action    
  }
  //force Update
  public static void update(){
    try{
      batteryThread.update();
    }catch(Exception e){e.printStackTrace();}
  }
}

Java Source Code List

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