Java tutorial
/* * This file is part of Prepay Credit for Android * * Copyright 2014 Damien O'Reilly * * Prepay Credit for Android 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 3 of the License, or * (at your option) any later version. * Prepay Credit for Android 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 Prepay Credit for Android. If not, see <http://www.gnu.org/licenses/>. * * Report bugs or new features at: https://github.com/DamienOReilly/PrepayCredit * Contact the author at: damienreilly@gmail.com */ package damo.three.ie.prepay; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.PackageManager; import android.os.SystemClock; import android.preference.PreferenceManager; import android.support.v4.content.WakefulBroadcastReceiver; import android.util.Log; /** * Class executes an update of usages when internet activity is available again. This is only enabled once off when we * previously tried up update in the background and internet connectivity was unavailable. * * @author Damien O'Reilly */ public class ConnectivityReceiver extends WakefulBroadcastReceiver { /** * Enables ConnectivityReceiver */ public static void enableReceiver(Context context) { ComponentName component = new ComponentName(context, ConnectivityReceiver.class); context.getPackageManager().setComponentEnabledSetting(component, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP); } /** * Disables ConnectivityReceiver */ private static void disableReceiver(Context context) { ComponentName component = new ComponentName(context, ConnectivityReceiver.class); context.getPackageManager().setComponentEnabledSetting(component, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP); } @Override public void onReceive(Context context, Intent intent) { SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context); if (sharedPrefs.getBoolean("backgroundupdate", true) && !(sharedPrefs.getString("mobile", "").equals("") && sharedPrefs.getString("password", "").equals(""))) { Log.d(Constants.TAG, "Internet back!! updating usage!"); Intent receiver = new Intent(context, UpdateReceiver.class); AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); // Using different request code to 0 so it won't conflict main repeating alarm. PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 2, receiver, PendingIntent.FLAG_UPDATE_CURRENT); // Keeping efficiency in mind: // http://developer.android.com/reference/android/app/AlarmManager.html#ELAPSED_REALTIME am.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime(), pendingIntent); // Disable receiver after we scheduled an update. disableReceiver(context); } } }