1 /*
2 * Copyright 2016 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.example.android.directboot.alarms;
18 
19 import android.app.AlarmManager;
20 import android.app.PendingIntent;
21 import android.content.Context;
22 import android.content.Intent;
23 import android.os.Bundle;
24 import android.util.Log;
25 
26 import java.util.Calendar;
27 
28 /**
29  * Utility class for alarms.
30  */
31 public class AlarmUtil {
32 
33     private static final String TAG = "AlarmUtil";
34     private final Context mContext;
35     private final AlarmManager mAlarmManager;
36 
AlarmUtil(Context context)37     public AlarmUtil(Context context) {
38         mContext = context;
39         mAlarmManager = mContext.getSystemService(AlarmManager.class);
40     }
41 
42     /**
43      * Schedules an alarm using {@link AlarmManager}.
44      *
45      * @param alarm the alarm to be scheduled
46      */
scheduleAlarm(Alarm alarm)47     public void scheduleAlarm(Alarm alarm) {
48         Intent intent = new Intent(mContext, AlarmIntentService.class);
49         Bundle extras = writeAlarm(alarm);
50         intent.putExtras(extras);
51 
52         PendingIntent pendingIntent = PendingIntent
53                 .getService(mContext, alarm.id, intent, PendingIntent.FLAG_UPDATE_CURRENT);
54         Calendar alarmTime = Calendar.getInstance();
55         alarmTime.set(Calendar.MONTH, alarm.month);
56         alarmTime.set(Calendar.DATE, alarm.date);
57         alarmTime.set(Calendar.HOUR_OF_DAY, alarm.hour);
58         alarmTime.set(Calendar.MINUTE, alarm.minute);
59 
60         AlarmManager.AlarmClockInfo alarmClockInfo = new AlarmManager.AlarmClockInfo(
61                 alarmTime.getTimeInMillis(),
62                 pendingIntent);
63         mAlarmManager.setAlarmClock(alarmClockInfo, pendingIntent);
64         Log.i(TAG,
65                 String.format("Alarm scheduled at (%2d:%02d) Date: %d, Month: %d",
66                         alarm.hour, alarm.minute,
67                         alarm.month, alarm.date));
68     }
69 
70     /**
71      * Cancels the scheduled alarm.
72      *
73      * @param alarm the alarm to be canceled.
74      */
cancelAlarm(Alarm alarm)75     public void cancelAlarm(Alarm alarm) {
76         Intent intent = new Intent(mContext, AlarmIntentService.class);
77         PendingIntent pendingIntent = PendingIntent
78                 .getService(mContext, alarm.id, intent, PendingIntent.FLAG_UPDATE_CURRENT);
79         mAlarmManager.cancel(pendingIntent);
80     }
81 
82     /**
83      * Returns a next alarm time (nearest day) Calendar instance with the hour and the minute.
84      *
85      * @param hour the integer of the hour an alarm should go off
86      * @param minute the integer of the minute an alarm should go off
87      * @return a {@link Calendar} instance an alarm should go off given the passed hour and the
88      *         minute
89      */
getNextAlarmTime(int hour, int minute)90     public Calendar getNextAlarmTime(int hour, int minute) {
91         Calendar alarmTime = Calendar.getInstance();
92         alarmTime.set(Calendar.HOUR_OF_DAY, hour);
93         alarmTime.set(Calendar.MINUTE, minute);
94         if ((alarmTime.getTimeInMillis() - System.currentTimeMillis()) < 0) {
95             alarmTime.add(Calendar.DATE, 1);
96         }
97         return alarmTime;
98     }
99 
readAlarm(Bundle extras)100     public static Alarm readAlarm(Bundle extras) {
101         int id = extras.getInt(AlarmIntentService.KEY_ALARM_ID);
102         int month = extras.getInt(AlarmIntentService.KEY_ALARM_MONTH);
103         int date = extras.getInt(AlarmIntentService.KEY_ALARM_DATE);
104         int hour = extras.getInt(AlarmIntentService.KEY_ALARM_HOUR);
105         int minute = extras.getInt(AlarmIntentService.KEY_ALARM_MINUTE);
106 
107         return new Alarm(id, month, date, hour, minute);
108     }
109 
writeAlarm(Alarm alarm)110     public static Bundle writeAlarm(Alarm alarm){
111         Bundle extras = new Bundle();
112         extras.putInt(AlarmIntentService.KEY_ALARM_ID, alarm.id);
113         extras.putInt(AlarmIntentService.KEY_ALARM_MONTH, alarm.month);
114         extras.putInt(AlarmIntentService.KEY_ALARM_DATE, alarm.date);
115         extras.putInt(AlarmIntentService.KEY_ALARM_HOUR, alarm.hour);
116         extras.putInt(AlarmIntentService.KEY_ALARM_MINUTE, alarm.minute);
117 
118         return extras;
119     }
120 }
121