2 * Copyright (C) 2008 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.calendar;
19 import android.app.AlarmManager;
20 import android.app.Notification;
21 import android.app.NotificationManager;
22 import android.app.Service;
23 import android.content.ContentResolver;
24 import android.content.ContentValues;
25 import android.content.Context;
26 import android.content.Intent;
27 import android.content.SharedPreferences;
28 import android.database.Cursor;
29 import android.net.Uri;
30 import android.os.Bundle;
31 import android.os.Handler;
32 import android.os.HandlerThread;
33 import android.os.IBinder;
34 import android.os.Looper;
35 import android.os.Message;
36 import android.os.Process;
37 import android.preference.PreferenceManager;
38 import android.provider.Calendar;
39 import android.provider.Calendar.Attendees;
40 import android.provider.Calendar.CalendarAlerts;
41 import android.provider.Calendar.Instances;
42 import android.provider.Calendar.Reminders;
43 import android.text.TextUtils;
44 import android.text.format.DateUtils;
45 import android.text.format.Time;
46 import android.util.Log;
47 import android.view.LayoutInflater;
48 import android.view.View;
51 * This service is used to handle calendar event reminders.
53 public class AlertService extends Service {
54 private static final String TAG = "AlertService";
56 private volatile Looper mServiceLooper;
57 private volatile ServiceHandler mServiceHandler;
59 private static final String[] ALERT_PROJECTION = new String[] {
60 CalendarAlerts._ID, // 0
61 CalendarAlerts.EVENT_ID, // 1
62 CalendarAlerts.STATE, // 2
63 CalendarAlerts.TITLE, // 3
64 CalendarAlerts.EVENT_LOCATION, // 4
65 CalendarAlerts.SELF_ATTENDEE_STATUS, // 5
66 CalendarAlerts.ALL_DAY, // 6
67 CalendarAlerts.ALARM_TIME, // 7
68 CalendarAlerts.MINUTES, // 8
69 CalendarAlerts.BEGIN, // 9
72 // We just need a simple projection that returns any column
73 private static final String[] ALERT_PROJECTION_SMALL = new String[] {
74 CalendarAlerts._ID, // 0
77 private static final int ALERT_INDEX_ID = 0;
78 private static final int ALERT_INDEX_EVENT_ID = 1;
79 private static final int ALERT_INDEX_STATE = 2;
80 private static final int ALERT_INDEX_TITLE = 3;
81 private static final int ALERT_INDEX_EVENT_LOCATION = 4;
82 private static final int ALERT_INDEX_SELF_ATTENDEE_STATUS = 5;
83 private static final int ALERT_INDEX_ALL_DAY = 6;
84 private static final int ALERT_INDEX_ALARM_TIME = 7;
85 private static final int ALERT_INDEX_MINUTES = 8;
86 private static final int ALERT_INDEX_BEGIN = 9;
88 private String[] INSTANCE_PROJECTION = { Instances.BEGIN, Instances.END };
89 private static final int INSTANCES_INDEX_BEGIN = 0;
90 private static final int INSTANCES_INDEX_END = 1;
92 // We just need a simple projection that returns any column
93 private static final String[] REMINDER_PROJECTION_SMALL = new String[] {
97 private void processMessage(Message msg) {
98 Bundle bundle = (Bundle) msg.obj;
100 // On reboot, update the notification bar with the contents of the
101 // CalendarAlerts table.
102 String action = bundle.getString("action");
103 if (action.equals(Intent.ACTION_BOOT_COMPLETED)
104 || action.equals(Intent.ACTION_TIME_CHANGED)) {
109 // The Uri specifies an entry in the CalendarAlerts table
110 Uri alertUri = Uri.parse(bundle.getString("uri"));
111 if (Log.isLoggable(TAG, Log.DEBUG)) {
112 Log.d(TAG, "uri: " + alertUri);
115 ContentResolver cr = getContentResolver();
116 Cursor alertCursor = cr.query(alertUri, ALERT_PROJECTION,
117 null /* selection */, null, null /* sort order */);
119 long alertId, eventId, instanceId, alarmTime;
124 boolean declined = false;
126 if (alertCursor == null || !alertCursor.moveToFirst()) {
127 // This can happen if the event was deleted.
128 if (Log.isLoggable(TAG, Log.DEBUG)) {
129 Log.d(TAG, "alert not found");
133 alertId = alertCursor.getLong(ALERT_INDEX_ID);
134 eventId = alertCursor.getLong(ALERT_INDEX_EVENT_ID);
135 minutes = alertCursor.getInt(ALERT_INDEX_MINUTES);
136 eventName = alertCursor.getString(ALERT_INDEX_TITLE);
137 location = alertCursor.getString(ALERT_INDEX_EVENT_LOCATION);
138 allDay = alertCursor.getInt(ALERT_INDEX_ALL_DAY) != 0;
139 alarmTime = alertCursor.getLong(ALERT_INDEX_ALARM_TIME);
140 declined = alertCursor.getInt(ALERT_INDEX_SELF_ATTENDEE_STATUS) ==
141 Attendees.ATTENDEE_STATUS_DECLINED;
143 // If the event was declined, then mark the alarm DISMISSED,
144 // otherwise, mark the alarm FIRED.
145 int newState = CalendarAlerts.FIRED;
147 newState = CalendarAlerts.DISMISSED;
149 alertCursor.updateInt(ALERT_INDEX_STATE, newState);
150 alertCursor.commitUpdates();
152 if (alertCursor != null) {
157 // Do not show an alert if the event was declined
159 if (Log.isLoggable(TAG, Log.DEBUG)) {
160 Log.d(TAG, "event declined, alert cancelled");
165 long beginTime = bundle.getLong(Calendar.EVENT_BEGIN_TIME, 0);
166 long endTime = bundle.getLong(Calendar.EVENT_END_TIME, 0);
168 // Check if this alarm is still valid. The time of the event may
169 // have been changed, or the reminder may have been changed since
170 // this alarm was set. First, search for an instance in the Instances
171 // that has the same event id and the same begin and end time.
172 // Then check for a reminder in the Reminders table to ensure that
173 // the reminder minutes is consistent with this alarm.
174 String selection = Instances.EVENT_ID + "=" + eventId;
175 Cursor instanceCursor = Instances.query(cr, INSTANCE_PROJECTION,
176 beginTime, endTime, selection, Instances.DEFAULT_SORT_ORDER);
177 long instanceBegin = 0, instanceEnd = 0;
179 if (instanceCursor == null || !instanceCursor.moveToFirst()) {
180 // Delete this alarm from the CalendarAlerts table
181 cr.delete(alertUri, null /* selection */, null /* selection args */);
182 if (Log.isLoggable(TAG, Log.DEBUG)) {
183 Log.d(TAG, "instance not found, alert cancelled");
187 instanceBegin = instanceCursor.getLong(INSTANCES_INDEX_BEGIN);
188 instanceEnd = instanceCursor.getLong(INSTANCES_INDEX_END);
190 if (instanceCursor != null) {
191 instanceCursor.close();
195 // Check that a reminder for this event exists with the same number
196 // of minutes. But snoozed alarms have minutes = 0, so don't do this
197 // check for snoozed alarms.
199 selection = Reminders.EVENT_ID + "=" + eventId
200 + " AND " + Reminders.MINUTES + "=" + minutes;
201 Cursor reminderCursor = cr.query(Reminders.CONTENT_URI, REMINDER_PROJECTION_SMALL,
202 selection, null /* selection args */, null /* sort order */);
204 if (reminderCursor == null || reminderCursor.getCount() == 0) {
205 // Delete this alarm from the CalendarAlerts table
206 cr.delete(alertUri, null /* selection */, null /* selection args */);
207 if (Log.isLoggable(TAG, Log.DEBUG)) {
208 Log.d(TAG, "reminder not found, alert cancelled");
213 if (reminderCursor != null) {
214 reminderCursor.close();
219 // If the event time was changed and the event has already ended,
220 // then don't sound the alarm.
221 if (alarmTime > instanceEnd) {
222 // Delete this alarm from the CalendarAlerts table
223 cr.delete(alertUri, null /* selection */, null /* selection args */);
224 if (Log.isLoggable(TAG, Log.DEBUG)) {
225 Log.d(TAG, "event ended, alert cancelled");
230 // If minutes > 0, then this is a normal alarm (not a snoozed alarm)
231 // so check for duplicate alarms. A duplicate alarm can occur when
232 // the start time of an event is changed to an earlier time. The
233 // later alarm (that was first scheduled for the later event time)
234 // should be discarded.
235 long computedAlarmTime = instanceBegin - minutes * DateUtils.MINUTE_IN_MILLIS;
236 if (minutes > 0 && computedAlarmTime != alarmTime) {
237 // If the event time was changed to a later time, then the computed
238 // alarm time is in the future and we shouldn't sound this alarm.
239 if (computedAlarmTime > alarmTime) {
240 // Delete this alarm from the CalendarAlerts table
241 cr.delete(alertUri, null /* selection */, null /* selection args */);
242 if (Log.isLoggable(TAG, Log.DEBUG)) {
243 Log.d(TAG, "event postponed, alert cancelled");
248 // Check for another alarm in the CalendarAlerts table that has the
249 // same event id and the same "minutes". This can occur
250 // if the event start time was changed to an earlier time and the
251 // alarm for the later time goes off. To avoid discarding alarms
252 // for repeating events (that have the same event id), we check
253 // that the other alarm fired recently (within an hour of this one).
254 long recently = alarmTime - 60 * DateUtils.MINUTE_IN_MILLIS;
255 selection = CalendarAlerts.EVENT_ID + "=" + eventId
256 + " AND " + CalendarAlerts.TABLE_NAME + "." + CalendarAlerts._ID
258 + " AND " + CalendarAlerts.MINUTES + "=" + minutes
259 + " AND " + CalendarAlerts.ALARM_TIME + ">" + recently
260 + " AND " + CalendarAlerts.ALARM_TIME + "<=" + alarmTime;
261 alertCursor = CalendarAlerts.query(cr, ALERT_PROJECTION_SMALL, selection, null);
262 if (alertCursor != null) {
264 if (alertCursor.getCount() > 0) {
265 // Delete this alarm from the CalendarAlerts table
266 cr.delete(alertUri, null /* selection */, null /* selection args */);
267 if (Log.isLoggable(TAG, Log.DEBUG)) {
268 Log.d(TAG, "duplicate alarm, alert cancelled");
278 // Find all the alerts that have fired but have not been dismissed
279 selection = CalendarAlerts.STATE + "=" + CalendarAlerts.FIRED;
280 alertCursor = CalendarAlerts.query(cr, ALERT_PROJECTION, selection, null);
282 if (alertCursor == null || alertCursor.getCount() == 0) {
283 if (Log.isLoggable(TAG, Log.DEBUG)) {
284 Log.d(TAG, "no fired alarms found");
289 int numReminders = alertCursor.getCount();
291 while (alertCursor.moveToNext()) {
292 long otherEventId = alertCursor.getLong(ALERT_INDEX_EVENT_ID);
293 long otherAlertId = alertCursor.getLong(ALERT_INDEX_ID);
294 int otherAlarmState = alertCursor.getInt(ALERT_INDEX_STATE);
295 long otherBeginTime = alertCursor.getLong(ALERT_INDEX_BEGIN);
296 if (otherEventId == eventId && otherAlertId != alertId
297 && otherAlarmState == CalendarAlerts.FIRED
298 && otherBeginTime == beginTime) {
299 // This event already has an alert that fired and has not
300 // been dismissed. This can happen if an event has
301 // multiple reminders. Do not count this as a separate
302 // reminder. But we do want to sound the alarm and vibrate
303 // the phone, if necessary.
304 if (Log.isLoggable(TAG, Log.DEBUG)) {
305 Log.d(TAG, "multiple alarms for this event");
314 if (Log.isLoggable(TAG, Log.DEBUG)) {
315 Log.d(TAG, "creating new alarm notification, numReminders: " + numReminders);
317 Notification notification = AlertReceiver.makeNewAlertNotification(this, eventName,
318 location, numReminders);
320 // Generate either a pop-up dialog, status bar notification, or
321 // neither. Pop-up dialog and status bar notification may include a
322 // sound, an alert, or both. A status bar notification also includes
324 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
325 String reminderType = prefs.getString(CalendarPreferenceActivity.KEY_ALERTS_TYPE,
326 CalendarPreferenceActivity.ALERT_TYPE_STATUS_BAR);
328 if (reminderType.equals(CalendarPreferenceActivity.ALERT_TYPE_OFF)) {
329 if (Log.isLoggable(TAG, Log.DEBUG)) {
330 Log.d(TAG, "alert preference is OFF");
335 NotificationManager nm =
336 (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
337 boolean reminderVibrate =
338 prefs.getBoolean(CalendarPreferenceActivity.KEY_ALERTS_VIBRATE, false);
339 String reminderRingtone =
340 prefs.getString(CalendarPreferenceActivity.KEY_ALERTS_RINGTONE, null);
342 // Possibly generate a vibration
343 if (reminderVibrate) {
344 notification.defaults |= Notification.DEFAULT_VIBRATE;
347 // Possibly generate a sound. If 'Silent' is chosen, the ringtone string will be empty.
348 notification.sound = TextUtils.isEmpty(reminderRingtone) ? null : Uri
349 .parse(reminderRingtone);
351 if (reminderType.equals(CalendarPreferenceActivity.ALERT_TYPE_ALERTS)) {
352 Intent alertIntent = new Intent();
353 alertIntent.setClass(this, AlertActivity.class);
354 alertIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
355 startActivity(alertIntent);
357 LayoutInflater inflater;
358 inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
359 View view = inflater.inflate(R.layout.alert_toast, null);
361 AlertAdapter.updateView(this, view, eventName, location, beginTime, endTime, allDay);
364 // Record the notify time in the CalendarAlerts table.
365 // This is used for debugging missed alarms.
366 ContentValues values = new ContentValues();
367 long currentTime = System.currentTimeMillis();
368 values.put(CalendarAlerts.NOTIFY_TIME, currentTime);
369 cr.update(alertUri, values, null /* where */, null /* args */);
371 // The notification time should be pretty close to the reminder time
372 // that the user set for this event. If the notification is late, then
373 // that's a bug and we should log an error.
374 if (currentTime > alarmTime + DateUtils.MINUTE_IN_MILLIS) {
375 long minutesLate = (currentTime - alarmTime) / DateUtils.MINUTE_IN_MILLIS;
376 int flags = DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_TIME;
377 String alarmTimeStr = DateUtils.formatDateTime(this, alarmTime, flags);
378 String currentTimeStr = DateUtils.formatDateTime(this, currentTime, flags);
379 Log.w(TAG, "Calendar reminder alarm for event id " + eventId
380 + " is " + minutesLate + " minute(s) late;"
381 + " expected alarm at: " + alarmTimeStr
382 + " but got it at: " + currentTimeStr);
385 nm.notify(0, notification);
388 private void doTimeChanged() {
389 ContentResolver cr = getContentResolver();
390 Object service = getSystemService(Context.ALARM_SERVICE);
391 AlarmManager manager = (AlarmManager) service;
392 CalendarAlerts.rescheduleMissedAlarms(cr, this, manager);
393 AlertReceiver.updateAlertNotification(this);
396 private final class ServiceHandler extends Handler {
397 public ServiceHandler(Looper looper) {
402 public void handleMessage(Message msg) {
404 // NOTE: We MUST not call stopSelf() directly, since we need to
405 // make sure the wake lock acquired by AlertReceiver is released.
406 AlertReceiver.finishStartingService(AlertService.this, msg.arg1);
411 public void onCreate() {
412 HandlerThread thread = new HandlerThread("AlertService",
413 Process.THREAD_PRIORITY_BACKGROUND);
416 mServiceLooper = thread.getLooper();
417 mServiceHandler = new ServiceHandler(mServiceLooper);
421 public void onStart(Intent intent, int startId) {
422 Message msg = mServiceHandler.obtainMessage();
424 msg.obj = intent.getExtras();
425 mServiceHandler.sendMessage(msg);
429 public void onDestroy() {
430 mServiceLooper.quit();
434 public IBinder onBind(Intent intent) {