1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.cellbroadcastreceiver; 18 19 import android.app.Application; 20 import android.content.SharedPreferences; 21 import android.util.Log; 22 import android.preference.PreferenceManager; 23 24 import static com.android.cellbroadcastreceiver.CellBroadcastReceiver.DBG; 25 26 /** 27 * The application class loads the default preferences at first start, 28 * and remembers the time of the most recently received broadcast. 29 */ 30 public class CellBroadcastReceiverApp extends Application { 31 public static final String LOG_TAG = "CellBroadcastReceiverApp"; 32 public static final String PREF_KEY_NOTIFICATION_ID = "notification_id"; 33 34 static CellBroadcastReceiverApp gCellBroadcastReceiverApp; 35 36 @Override onCreate()37 public void onCreate() { 38 super.onCreate(); 39 PreferenceManager.setDefaultValues(this, R.xml.preferences, false); 40 gCellBroadcastReceiverApp = this; 41 } 42 getCellBroadcastReceiverApp()43 public static CellBroadcastReceiverApp getCellBroadcastReceiverApp() { 44 return gCellBroadcastReceiverApp; 45 } 46 47 // Each incoming CB gets its own notification. We have to use a new unique notification id 48 // for each one. getNextNotificationId()49 public int getNextNotificationId() { 50 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); 51 int notificationId = prefs.getInt(PREF_KEY_NOTIFICATION_ID, 0); 52 ++notificationId; 53 if (notificationId > 32765) { 54 notificationId = 1; // wrap around before it gets dangerous 55 } 56 57 // Save the updated notificationId in SharedPreferences 58 SharedPreferences.Editor editor = prefs.edit(); 59 editor.putInt(PREF_KEY_NOTIFICATION_ID, notificationId); 60 editor.apply(); 61 62 if (DBG) Log.d(LOG_TAG, "getNextNotificationId: " + notificationId); 63 64 return notificationId; 65 } 66 } 67