1 /* 2 * Copyright (C) 2017 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 package com.android.wallpaper.module; 17 18 import android.app.AlarmManager; 19 import android.app.PendingIntent; 20 import android.content.Context; 21 import android.content.Intent; 22 23 import java.util.Calendar; 24 import java.util.concurrent.TimeUnit; 25 26 /** 27 * Schedules and cancels alarms on Android's {@link AlarmManager} to occur every 24 hours to perform 28 * daily logging. 29 */ 30 public class DailyLoggingAlarmScheduler { 31 32 private static final int UNUSED_REQUEST_CODE = 0; 33 private static final int UNUSED_REQUEST_FLAGS = 0; 34 35 /** 36 * Sets a new alarm to fire approximately 24 hours after the last one, or immediately if it has 37 * not fired in over 24 hours. 38 */ setAlarm(Context appContext)39 public static void setAlarm(Context appContext) { 40 Injector injector = InjectorProvider.getInjector(); 41 AlarmManagerWrapper alarmManagerWrapper = injector.getAlarmManagerWrapper(appContext); 42 WallpaperPreferences preferences = injector.getPreferences(appContext); 43 44 long lastTimestamp = preferences.getLastDailyLogTimestamp(); 45 46 Calendar oneDayAgo = Calendar.getInstance(); 47 long currentTimeMillis = System.currentTimeMillis(); 48 oneDayAgo.setTimeInMillis(currentTimeMillis); 49 oneDayAgo.add(Calendar.DAY_OF_YEAR, -1); 50 51 long triggerAtMillis; 52 if (lastTimestamp == -1 || lastTimestamp < oneDayAgo.getTimeInMillis()) { 53 // Schedule for right now (a minute from now, to ensure the trigger time is in the future) and 54 // then every ~24 hours later. 55 Calendar oneMinuteFromNow = Calendar.getInstance(); 56 oneMinuteFromNow.setTimeInMillis(currentTimeMillis); 57 oneMinuteFromNow.add(Calendar.MINUTE, 1); 58 triggerAtMillis = oneMinuteFromNow.getTimeInMillis(); 59 } else { 60 // Schedule for 24 hours after the last daily log, and every ~24 hours after that. 61 Calendar oneDayFromNow = Calendar.getInstance(); 62 oneDayFromNow.setTimeInMillis(lastTimestamp); 63 oneDayFromNow.add(Calendar.DAY_OF_YEAR, 1); 64 triggerAtMillis = oneDayFromNow.getTimeInMillis(); 65 } 66 67 // Cancel any existing daily logging alarms. Then do the actual scheduling of the new alarm. 68 PendingIntent pendingIntent = createAlarmReceiverPendingIntent(appContext); 69 alarmManagerWrapper.cancel(pendingIntent); 70 71 pendingIntent = createAlarmReceiverPendingIntent(appContext); 72 alarmManagerWrapper.setInexactRepeating( 73 AlarmManager.RTC /* type */, 74 triggerAtMillis /* triggerAtMillis */, 75 TimeUnit.MILLISECONDS.convert(24, TimeUnit.HOURS) /* intervalMillis */, 76 pendingIntent /* operation */); 77 } 78 createAlarmReceiverPendingIntent(Context appContext)79 private static PendingIntent createAlarmReceiverPendingIntent(Context appContext) { 80 Intent intent = new Intent(appContext, DailyLoggingAlarmReceiver.class); 81 return PendingIntent.getBroadcast( 82 appContext, UNUSED_REQUEST_CODE, intent, UNUSED_REQUEST_FLAGS); 83 } 84 85 } 86