AlertService.java revision 23e7da3eacee7bceb105cdfc7b5329c7a43846d5
1/* 2 * Copyright (C) 2008 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 17package com.android.calendar.alerts; 18 19import com.android.calendar.CalendarPreferenceActivity; 20import com.android.calendar.R; 21import com.android.calendar.R.string; 22 23import android.app.AlarmManager; 24import android.app.Notification; 25import android.app.NotificationManager; 26import android.app.Service; 27import android.content.ContentResolver; 28import android.content.ContentUris; 29import android.content.ContentValues; 30import android.content.Context; 31import android.content.Intent; 32import android.content.SharedPreferences; 33import android.database.Cursor; 34import android.media.AudioManager; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.HandlerThread; 39import android.os.IBinder; 40import android.os.Looper; 41import android.os.Message; 42import android.os.Process; 43import android.preference.PreferenceManager; 44import android.provider.Calendar.Attendees; 45import android.provider.Calendar.CalendarAlerts; 46import android.text.TextUtils; 47import android.util.Log; 48 49import java.util.HashMap; 50 51/** 52 * This service is used to handle calendar event reminders. 53 */ 54public class AlertService extends Service { 55 static final boolean DEBUG = true; 56 private static final String TAG = "AlertService"; 57 58 private volatile Looper mServiceLooper; 59 private volatile ServiceHandler mServiceHandler; 60 61 private static final String[] ALERT_PROJECTION = new String[] { 62 CalendarAlerts._ID, // 0 63 CalendarAlerts.EVENT_ID, // 1 64 CalendarAlerts.STATE, // 2 65 CalendarAlerts.TITLE, // 3 66 CalendarAlerts.EVENT_LOCATION, // 4 67 CalendarAlerts.SELF_ATTENDEE_STATUS, // 5 68 CalendarAlerts.ALL_DAY, // 6 69 CalendarAlerts.ALARM_TIME, // 7 70 CalendarAlerts.MINUTES, // 8 71 CalendarAlerts.BEGIN, // 9 72 CalendarAlerts.END, // 10 73 }; 74 75 private static final int ALERT_INDEX_ID = 0; 76 private static final int ALERT_INDEX_EVENT_ID = 1; 77 private static final int ALERT_INDEX_STATE = 2; 78 private static final int ALERT_INDEX_TITLE = 3; 79 private static final int ALERT_INDEX_EVENT_LOCATION = 4; 80 private static final int ALERT_INDEX_SELF_ATTENDEE_STATUS = 5; 81 private static final int ALERT_INDEX_ALL_DAY = 6; 82 private static final int ALERT_INDEX_ALARM_TIME = 7; 83 private static final int ALERT_INDEX_MINUTES = 8; 84 private static final int ALERT_INDEX_BEGIN = 9; 85 private static final int ALERT_INDEX_END = 10; 86 87 private static final String ACTIVE_ALERTS_SELECTION = "(" + CalendarAlerts.STATE + "=? OR " 88 + CalendarAlerts.STATE + "=?) AND " + CalendarAlerts.ALARM_TIME + "<="; 89 90 private static final String[] ACTIVE_ALERTS_SELECTION_ARGS = new String[] { 91 Integer.toString(CalendarAlerts.FIRED), Integer.toString(CalendarAlerts.SCHEDULED) 92 }; 93 94 private static final String ACTIVE_ALERTS_SORT = "begin DESC, end DESC"; 95 96 @SuppressWarnings("deprecation") 97 void processMessage(Message msg) { 98 Bundle bundle = (Bundle) msg.obj; 99 100 // On reboot, update the notification bar with the contents of the 101 // CalendarAlerts table. 102 String action = bundle.getString("action"); 103 if (DEBUG) { 104 Log.d(TAG, "" + bundle.getLong(android.provider.Calendar.CalendarAlerts.ALARM_TIME) 105 + " Action = " + action); 106 } 107 108 if (action.equals(Intent.ACTION_BOOT_COMPLETED) 109 || action.equals(Intent.ACTION_TIME_CHANGED)) { 110 doTimeChanged(); 111 return; 112 } 113 114 if (!action.equals(android.provider.Calendar.EVENT_REMINDER_ACTION) 115 && !action.equals(Intent.ACTION_LOCALE_CHANGED)) { 116 Log.w(TAG, "Invalid action: " + action); 117 return; 118 } 119 120 updateAlertNotification(this); 121 } 122 123 static boolean updateAlertNotification(Context context) { 124 ContentResolver cr = context.getContentResolver(); 125 final long currentTime = System.currentTimeMillis(); 126 127 Cursor alertCursor = CalendarAlerts.query(cr, ALERT_PROJECTION, ACTIVE_ALERTS_SELECTION 128 + currentTime, ACTIVE_ALERTS_SELECTION_ARGS, ACTIVE_ALERTS_SORT); 129 130 if (alertCursor == null || alertCursor.getCount() == 0) { 131 if (alertCursor != null) { 132 alertCursor.close(); 133 } 134 135 if (DEBUG) Log.d(TAG, "No fired or scheduled alerts"); 136 NotificationManager nm = 137 (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); 138 nm.cancel(0); 139 return false; 140 } 141 142 if (DEBUG) { 143 Log.d(TAG, "alert count:" + alertCursor.getCount()); 144 } 145 146 String notificationEventName = null; 147 String notificationEventLocation = null; 148 long notificationEventBegin = 0; 149 int notificationEventStatus = 0; 150 HashMap<Long, Long> eventIds = new HashMap<Long, Long>(); 151 int numReminders = 0; 152 int numFired = 0; 153 try { 154 while (alertCursor.moveToNext()) { 155 final long alertId = alertCursor.getLong(ALERT_INDEX_ID); 156 final long eventId = alertCursor.getLong(ALERT_INDEX_EVENT_ID); 157 final int minutes = alertCursor.getInt(ALERT_INDEX_MINUTES); 158 final String eventName = alertCursor.getString(ALERT_INDEX_TITLE); 159 final String location = alertCursor.getString(ALERT_INDEX_EVENT_LOCATION); 160 final boolean allDay = alertCursor.getInt(ALERT_INDEX_ALL_DAY) != 0; 161 final int status = alertCursor.getInt(ALERT_INDEX_SELF_ATTENDEE_STATUS); 162 final boolean declined = status == Attendees.ATTENDEE_STATUS_DECLINED; 163 final long beginTime = alertCursor.getLong(ALERT_INDEX_BEGIN); 164 final long endTime = alertCursor.getLong(ALERT_INDEX_END); 165 final Uri alertUri = ContentUris 166 .withAppendedId(CalendarAlerts.CONTENT_URI, alertId); 167 final long alarmTime = alertCursor.getLong(ALERT_INDEX_ALARM_TIME); 168 int state = alertCursor.getInt(ALERT_INDEX_STATE); 169 170 if (DEBUG) { 171 Log.d(TAG, "alarmTime:" + alarmTime + " alertId:" + alertId 172 + " eventId:" + eventId + " state: " + state + " minutes:" + minutes 173 + " declined:" + declined + " beginTime:" + beginTime 174 + " endTime:" + endTime); 175 } 176 177 ContentValues values = new ContentValues(); 178 int newState = -1; 179 180 // Uncomment for the behavior of clearing out alerts after the 181 // events ended. b/1880369 182 // 183 // if (endTime < currentTime) { 184 // newState = CalendarAlerts.DISMISSED; 185 // } else 186 187 // Remove declined events and duplicate alerts for the same event 188 if (!declined && eventIds.put(eventId, beginTime) == null) { 189 numReminders++; 190 if (state == CalendarAlerts.SCHEDULED) { 191 newState = CalendarAlerts.FIRED; 192 numFired++; 193 194 // Record the received time in the CalendarAlerts table. 195 // This is useful for finding bugs that cause alarms to be 196 // missed or delayed. 197 values.put(CalendarAlerts.RECEIVED_TIME, currentTime); 198 } 199 } else { 200 newState = CalendarAlerts.DISMISSED; 201 if (DEBUG) { 202 if (!declined) Log.d(TAG, "dropping dup alert for event " + eventId); 203 } 204 } 205 206 // Update row if state changed 207 if (newState != -1) { 208 values.put(CalendarAlerts.STATE, newState); 209 state = newState; 210 } 211 212 if (state == CalendarAlerts.FIRED) { 213 // Record the time posting to notification manager. 214 // This is used for debugging missed alarms. 215 values.put(CalendarAlerts.NOTIFY_TIME, currentTime); 216 } 217 218 // Write row to if anything changed 219 if (values.size() > 0) cr.update(alertUri, values, null, null); 220 221 if (state != CalendarAlerts.FIRED) { 222 continue; 223 } 224 225 // Pick an Event title for the notification panel by the latest 226 // alertTime and give prefer accepted events in case of ties. 227 int newStatus; 228 switch (status) { 229 case Attendees.ATTENDEE_STATUS_ACCEPTED: 230 newStatus = 2; 231 break; 232 case Attendees.ATTENDEE_STATUS_TENTATIVE: 233 newStatus = 1; 234 break; 235 default: 236 newStatus = 0; 237 } 238 239 // TODO Prioritize by "primary" calendar 240 // Assumes alerts are sorted by begin time in reverse 241 if (notificationEventName == null 242 || (notificationEventBegin <= beginTime && 243 notificationEventStatus < newStatus)) { 244 notificationEventName = eventName; 245 notificationEventLocation = location; 246 notificationEventBegin = beginTime; 247 notificationEventStatus = newStatus; 248 } 249 } 250 } finally { 251 if (alertCursor != null) { 252 alertCursor.close(); 253 } 254 } 255 256 SharedPreferences prefs = CalendarPreferenceActivity.getSharedPreferences(context); 257 258 boolean doAlert = prefs.getBoolean(CalendarPreferenceActivity.KEY_ALERTS, true); 259 boolean doPopup = prefs.getBoolean(CalendarPreferenceActivity.KEY_ALERTS_POPUP, false); 260 261 // TODO check for this before adding stuff to the alerts table. 262 if (!doAlert) { 263 if (DEBUG) { 264 Log.d(TAG, "alert preference is OFF"); 265 } 266 return true; 267 } 268 269 boolean quietUpdate = numFired == 0; 270 boolean highPriority = numFired > 0 && doPopup; 271 postNotification(context, prefs, notificationEventName, notificationEventLocation, 272 numReminders, quietUpdate, highPriority); 273 274 return true; 275 } 276 277 private static void postNotification(Context context, SharedPreferences prefs, 278 String eventName, String location, int numReminders, 279 boolean quietUpdate, boolean highPriority) { 280 if (DEBUG) { 281 Log.d(TAG, "###### creating new alarm notification, numReminders: " + numReminders 282 + (quietUpdate ? " QUIET" : " loud") 283 + (highPriority ? " high-priority" : "")); 284 } 285 286 NotificationManager nm = 287 (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); 288 289 if (numReminders == 0) { 290 nm.cancel(0); 291 return; 292 } 293 294 Notification notification = AlertReceiver.makeNewAlertNotification(context, eventName, 295 location, numReminders, highPriority); 296 notification.defaults |= Notification.DEFAULT_LIGHTS; 297 298 // Quietly update notification bar. Nothing new. Maybe something just got deleted. 299 if (!quietUpdate) { 300 // Flash ticker in status bar 301 notification.tickerText = eventName; 302 if (!TextUtils.isEmpty(location)) { 303 notification.tickerText = eventName + " - " + location; 304 } 305 306 // Generate either a pop-up dialog, status bar notification, or 307 // neither. Pop-up dialog and status bar notification may include a 308 // sound, an alert, or both. A status bar notification also includes 309 // a toast. 310 311 // Find out the circumstances under which to vibrate. 312 // Migrate from pre-Froyo boolean setting if necessary. 313 String vibrateWhen; // "always" or "silent" or "never" 314 if(prefs.contains(CalendarPreferenceActivity.KEY_ALERTS_VIBRATE_WHEN)) 315 { 316 // Look up Froyo setting 317 vibrateWhen = 318 prefs.getString(CalendarPreferenceActivity.KEY_ALERTS_VIBRATE_WHEN, null); 319 } else if(prefs.contains(CalendarPreferenceActivity.KEY_ALERTS_VIBRATE)) { 320 // No Froyo setting. Migrate pre-Froyo setting to new Froyo-defined value. 321 boolean vibrate = 322 prefs.getBoolean(CalendarPreferenceActivity.KEY_ALERTS_VIBRATE, false); 323 vibrateWhen = vibrate ? 324 context.getString(R.string.prefDefault_alerts_vibrate_true) : 325 context.getString(R.string.prefDefault_alerts_vibrate_false); 326 } else { 327 // No setting. Use Froyo-defined default. 328 vibrateWhen = context.getString(R.string.prefDefault_alerts_vibrateWhen); 329 } 330 boolean vibrateAlways = vibrateWhen.equals("always"); 331 boolean vibrateSilent = vibrateWhen.equals("silent"); 332 AudioManager audioManager = 333 (AudioManager)context.getSystemService(Context.AUDIO_SERVICE); 334 boolean nowSilent = 335 audioManager.getRingerMode() == AudioManager.RINGER_MODE_VIBRATE; 336 337 // Possibly generate a vibration 338 if (vibrateAlways || (vibrateSilent && nowSilent)) { 339 notification.defaults |= Notification.DEFAULT_VIBRATE; 340 } 341 342 // Possibly generate a sound. If 'Silent' is chosen, the ringtone 343 // string will be empty. 344 String reminderRingtone = prefs.getString( 345 CalendarPreferenceActivity.KEY_ALERTS_RINGTONE, null); 346 notification.sound = TextUtils.isEmpty(reminderRingtone) ? null : Uri 347 .parse(reminderRingtone); 348 } 349 350 nm.notify(0, notification); 351 } 352 353 private void doTimeChanged() { 354 ContentResolver cr = getContentResolver(); 355 Object service = getSystemService(Context.ALARM_SERVICE); 356 AlarmManager manager = (AlarmManager) service; 357 CalendarAlerts.rescheduleMissedAlarms(cr, this, manager); 358 updateAlertNotification(this); 359 } 360 361 private final class ServiceHandler extends Handler { 362 public ServiceHandler(Looper looper) { 363 super(looper); 364 } 365 366 @Override 367 public void handleMessage(Message msg) { 368 processMessage(msg); 369 // NOTE: We MUST not call stopSelf() directly, since we need to 370 // make sure the wake lock acquired by AlertReceiver is released. 371 AlertReceiver.finishStartingService(AlertService.this, msg.arg1); 372 } 373 } 374 375 @Override 376 public void onCreate() { 377 HandlerThread thread = new HandlerThread("AlertService", 378 Process.THREAD_PRIORITY_BACKGROUND); 379 thread.start(); 380 381 mServiceLooper = thread.getLooper(); 382 mServiceHandler = new ServiceHandler(mServiceLooper); 383 } 384 385 @Override 386 public int onStartCommand(Intent intent, int flags, int startId) { 387 if (intent != null) { 388 Message msg = mServiceHandler.obtainMessage(); 389 msg.arg1 = startId; 390 msg.obj = intent.getExtras(); 391 mServiceHandler.sendMessage(msg); 392 } 393 return START_REDELIVER_INTENT; 394 } 395 396 @Override 397 public void onDestroy() { 398 mServiceLooper.quit(); 399 } 400 401 @Override 402 public IBinder onBind(Intent intent) { 403 return null; 404 } 405} 406