AlertService.java revision 7321a0630aca3e5093d12f0e4f55da77620f53ed
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.GeneralPreferences; 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.provider.Calendar.Attendees; 44import android.provider.Calendar.CalendarAlerts; 45import android.text.TextUtils; 46import android.util.Log; 47 48import java.util.HashMap; 49 50/** 51 * This service is used to handle calendar event reminders. 52 */ 53public class AlertService extends Service { 54 static final boolean DEBUG = true; 55 private static final String TAG = "AlertService"; 56 57 private volatile Looper mServiceLooper; 58 private volatile ServiceHandler mServiceHandler; 59 60 private static final String[] ALERT_PROJECTION = new String[] { 61 CalendarAlerts._ID, // 0 62 CalendarAlerts.EVENT_ID, // 1 63 CalendarAlerts.STATE, // 2 64 CalendarAlerts.TITLE, // 3 65 CalendarAlerts.EVENT_LOCATION, // 4 66 CalendarAlerts.SELF_ATTENDEE_STATUS, // 5 67 CalendarAlerts.ALL_DAY, // 6 68 CalendarAlerts.ALARM_TIME, // 7 69 CalendarAlerts.MINUTES, // 8 70 CalendarAlerts.BEGIN, // 9 71 CalendarAlerts.END, // 10 72 }; 73 74 private static final int ALERT_INDEX_ID = 0; 75 private static final int ALERT_INDEX_EVENT_ID = 1; 76 private static final int ALERT_INDEX_STATE = 2; 77 private static final int ALERT_INDEX_TITLE = 3; 78 private static final int ALERT_INDEX_EVENT_LOCATION = 4; 79 private static final int ALERT_INDEX_SELF_ATTENDEE_STATUS = 5; 80 private static final int ALERT_INDEX_ALL_DAY = 6; 81 private static final int ALERT_INDEX_ALARM_TIME = 7; 82 private static final int ALERT_INDEX_MINUTES = 8; 83 private static final int ALERT_INDEX_BEGIN = 9; 84 private static final int ALERT_INDEX_END = 10; 85 86 private static final String ACTIVE_ALERTS_SELECTION = "(" + CalendarAlerts.STATE + "=? OR " 87 + CalendarAlerts.STATE + "=?) AND " + CalendarAlerts.ALARM_TIME + "<="; 88 89 private static final String[] ACTIVE_ALERTS_SELECTION_ARGS = new String[] { 90 Integer.toString(CalendarAlerts.FIRED), Integer.toString(CalendarAlerts.SCHEDULED) 91 }; 92 93 private static final String ACTIVE_ALERTS_SORT = "begin DESC, end DESC"; 94 95 void processMessage(Message msg) { 96 Bundle bundle = (Bundle) msg.obj; 97 98 // On reboot, update the notification bar with the contents of the 99 // CalendarAlerts table. 100 String action = bundle.getString("action"); 101 if (DEBUG) { 102 Log.d(TAG, "" + bundle.getLong(android.provider.Calendar.CalendarAlerts.ALARM_TIME) 103 + " Action = " + action); 104 } 105 106 if (action.equals(Intent.ACTION_BOOT_COMPLETED) 107 || action.equals(Intent.ACTION_TIME_CHANGED)) { 108 doTimeChanged(); 109 return; 110 } 111 112 if (!action.equals(android.provider.Calendar.EVENT_REMINDER_ACTION) 113 && !action.equals(Intent.ACTION_LOCALE_CHANGED)) { 114 Log.w(TAG, "Invalid action: " + action); 115 return; 116 } 117 118 updateAlertNotification(this); 119 } 120 121 static boolean updateAlertNotification(Context context) { 122 ContentResolver cr = context.getContentResolver(); 123 final long currentTime = System.currentTimeMillis(); 124 125 Cursor alertCursor = CalendarAlerts.query(cr, ALERT_PROJECTION, ACTIVE_ALERTS_SELECTION 126 + currentTime, ACTIVE_ALERTS_SELECTION_ARGS, ACTIVE_ALERTS_SORT); 127 128 if (alertCursor == null || alertCursor.getCount() == 0) { 129 if (alertCursor != null) { 130 alertCursor.close(); 131 } 132 133 if (DEBUG) Log.d(TAG, "No fired or scheduled alerts"); 134 NotificationManager nm = 135 (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); 136 nm.cancel(0); 137 return false; 138 } 139 140 if (DEBUG) { 141 Log.d(TAG, "alert count:" + alertCursor.getCount()); 142 } 143 144 String notificationEventName = null; 145 String notificationEventLocation = null; 146 long notificationEventBegin = 0; 147 int notificationEventStatus = 0; 148 boolean notificationEventAllDay = true; 149 HashMap<Long, Long> eventIds = new HashMap<Long, Long>(); 150 int numReminders = 0; 151 int numFired = 0; 152 try { 153 while (alertCursor.moveToNext()) { 154 final long alertId = alertCursor.getLong(ALERT_INDEX_ID); 155 final long eventId = alertCursor.getLong(ALERT_INDEX_EVENT_ID); 156 final int minutes = alertCursor.getInt(ALERT_INDEX_MINUTES); 157 final String eventName = alertCursor.getString(ALERT_INDEX_TITLE); 158 final String location = alertCursor.getString(ALERT_INDEX_EVENT_LOCATION); 159 final int status = alertCursor.getInt(ALERT_INDEX_SELF_ATTENDEE_STATUS); 160 final boolean declined = status == Attendees.ATTENDEE_STATUS_DECLINED; 161 final long beginTime = alertCursor.getLong(ALERT_INDEX_BEGIN); 162 final long endTime = alertCursor.getLong(ALERT_INDEX_END); 163 final Uri alertUri = ContentUris 164 .withAppendedId(CalendarAlerts.CONTENT_URI, alertId); 165 final long alarmTime = alertCursor.getLong(ALERT_INDEX_ALARM_TIME); 166 int state = alertCursor.getInt(ALERT_INDEX_STATE); 167 final boolean allDay = alertCursor.getInt(ALERT_INDEX_ALL_DAY) != 0; 168 169 if (DEBUG) { 170 Log.d(TAG, "alarmTime:" + alarmTime + " alertId:" + alertId 171 + " eventId:" + eventId + " state: " + state + " minutes:" + minutes 172 + " declined:" + declined + " beginTime:" + beginTime 173 + " endTime:" + endTime); 174 } 175 176 ContentValues values = new ContentValues(); 177 int newState = -1; 178 179 // Uncomment for the behavior of clearing out alerts after the 180 // events ended. b/1880369 181 // 182 // if (endTime < currentTime) { 183 // newState = CalendarAlerts.DISMISSED; 184 // } else 185 186 // Remove declined events and duplicate alerts for the same event 187 if (!declined && eventIds.put(eventId, beginTime) == null) { 188 numReminders++; 189 if (state == CalendarAlerts.SCHEDULED) { 190 newState = CalendarAlerts.FIRED; 191 numFired++; 192 193 // Record the received time in the CalendarAlerts table. 194 // This is useful for finding bugs that cause alarms to be 195 // missed or delayed. 196 values.put(CalendarAlerts.RECEIVED_TIME, currentTime); 197 } 198 } else { 199 newState = CalendarAlerts.DISMISSED; 200 if (DEBUG) { 201 if (!declined) Log.d(TAG, "dropping dup alert for event " + eventId); 202 } 203 } 204 205 // Update row if state changed 206 if (newState != -1) { 207 values.put(CalendarAlerts.STATE, newState); 208 state = newState; 209 } 210 211 if (state == CalendarAlerts.FIRED) { 212 // Record the time posting to notification manager. 213 // This is used for debugging missed alarms. 214 values.put(CalendarAlerts.NOTIFY_TIME, currentTime); 215 } 216 217 // Write row to if anything changed 218 if (values.size() > 0) cr.update(alertUri, values, null, null); 219 220 if (state != CalendarAlerts.FIRED) { 221 continue; 222 } 223 224 // Pick an Event title for the notification panel by the latest 225 // alertTime and give prefer accepted events in case of ties. 226 int newStatus; 227 switch (status) { 228 case Attendees.ATTENDEE_STATUS_ACCEPTED: 229 newStatus = 2; 230 break; 231 case Attendees.ATTENDEE_STATUS_TENTATIVE: 232 newStatus = 1; 233 break; 234 default: 235 newStatus = 0; 236 } 237 238 // TODO Prioritize by "primary" calendar 239 // Assumes alerts are sorted by begin time in reverse 240 if (notificationEventName == null 241 || (notificationEventBegin <= beginTime && 242 notificationEventStatus < newStatus)) { 243 notificationEventName = eventName; 244 notificationEventLocation = location; 245 notificationEventBegin = beginTime; 246 notificationEventStatus = newStatus; 247 notificationEventAllDay = allDay; 248 } 249 } 250 } finally { 251 if (alertCursor != null) { 252 alertCursor.close(); 253 } 254 } 255 256 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 257 258 boolean doAlert = prefs.getBoolean(GeneralPreferences.KEY_ALERTS, true); 259 boolean doPopup = prefs.getBoolean(GeneralPreferences.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, notificationEventBegin, 273 notificationEventAllDay); 274 275 return true; 276 } 277 278 private static void postNotification(Context context, SharedPreferences prefs, 279 String eventName, String location, int numReminders, 280 boolean quietUpdate, boolean highPriority, long startMillis, boolean allDay) { 281 if (DEBUG) { 282 Log.d(TAG, "###### creating new alarm notification, numReminders: " + numReminders 283 + (quietUpdate ? " QUIET" : " loud") 284 + (highPriority ? " high-priority" : "")); 285 } 286 287 NotificationManager nm = 288 (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); 289 290 if (numReminders == 0) { 291 nm.cancel(0); 292 return; 293 } 294 295 Notification notification = AlertReceiver.makeNewAlertNotification(context, eventName, 296 location, numReminders, highPriority, startMillis, allDay); 297 notification.defaults |= Notification.DEFAULT_LIGHTS; 298 299 // Quietly update notification bar. Nothing new. Maybe something just got deleted. 300 if (!quietUpdate) { 301 // Flash ticker in status bar 302 notification.tickerText = eventName; 303 if (!TextUtils.isEmpty(location)) { 304 notification.tickerText = eventName + " - " + location; 305 } 306 307 // Generate either a pop-up dialog, status bar notification, or 308 // neither. Pop-up dialog and status bar notification may include a 309 // sound, an alert, or both. A status bar notification also includes 310 // a toast. 311 312 // Find out the circumstances under which to vibrate. 313 // Migrate from pre-Froyo boolean setting if necessary. 314 String vibrateWhen; // "always" or "silent" or "never" 315 if(prefs.contains(GeneralPreferences.KEY_ALERTS_VIBRATE_WHEN)) 316 { 317 // Look up Froyo setting 318 vibrateWhen = 319 prefs.getString(GeneralPreferences.KEY_ALERTS_VIBRATE_WHEN, null); 320 } else if(prefs.contains(GeneralPreferences.KEY_ALERTS_VIBRATE)) { 321 // No Froyo setting. Migrate pre-Froyo setting to new Froyo-defined value. 322 boolean vibrate = 323 prefs.getBoolean(GeneralPreferences.KEY_ALERTS_VIBRATE, false); 324 vibrateWhen = vibrate ? 325 context.getString(R.string.prefDefault_alerts_vibrate_true) : 326 context.getString(R.string.prefDefault_alerts_vibrate_false); 327 } else { 328 // No setting. Use Froyo-defined default. 329 vibrateWhen = context.getString(R.string.prefDefault_alerts_vibrateWhen); 330 } 331 boolean vibrateAlways = vibrateWhen.equals("always"); 332 boolean vibrateSilent = vibrateWhen.equals("silent"); 333 AudioManager audioManager = 334 (AudioManager)context.getSystemService(Context.AUDIO_SERVICE); 335 boolean nowSilent = 336 audioManager.getRingerMode() == AudioManager.RINGER_MODE_VIBRATE; 337 338 // Possibly generate a vibration 339 if (vibrateAlways || (vibrateSilent && nowSilent)) { 340 notification.defaults |= Notification.DEFAULT_VIBRATE; 341 } 342 343 // Possibly generate a sound. If 'Silent' is chosen, the ringtone 344 // string will be empty. 345 String reminderRingtone = prefs.getString( 346 GeneralPreferences.KEY_ALERTS_RINGTONE, null); 347 notification.sound = TextUtils.isEmpty(reminderRingtone) ? null : Uri 348 .parse(reminderRingtone); 349 } 350 351 nm.notify(0, notification); 352 } 353 354 private void doTimeChanged() { 355 ContentResolver cr = getContentResolver(); 356 Object service = getSystemService(Context.ALARM_SERVICE); 357 AlarmManager manager = (AlarmManager) service; 358 CalendarAlerts.rescheduleMissedAlarms(cr, this, manager); 359 updateAlertNotification(this); 360 } 361 362 private final class ServiceHandler extends Handler { 363 public ServiceHandler(Looper looper) { 364 super(looper); 365 } 366 367 @Override 368 public void handleMessage(Message msg) { 369 processMessage(msg); 370 // NOTE: We MUST not call stopSelf() directly, since we need to 371 // make sure the wake lock acquired by AlertReceiver is released. 372 AlertReceiver.finishStartingService(AlertService.this, msg.arg1); 373 } 374 } 375 376 @Override 377 public void onCreate() { 378 HandlerThread thread = new HandlerThread("AlertService", 379 Process.THREAD_PRIORITY_BACKGROUND); 380 thread.start(); 381 382 mServiceLooper = thread.getLooper(); 383 mServiceHandler = new ServiceHandler(mServiceLooper); 384 } 385 386 @Override 387 public int onStartCommand(Intent intent, int flags, int startId) { 388 if (intent != null) { 389 Message msg = mServiceHandler.obtainMessage(); 390 msg.arg1 = startId; 391 msg.obj = intent.getExtras(); 392 mServiceHandler.sendMessage(msg); 393 } 394 return START_REDELIVER_INTENT; 395 } 396 397 @Override 398 public void onDestroy() { 399 mServiceLooper.quit(); 400 } 401 402 @Override 403 public IBinder onBind(Intent intent) { 404 return null; 405 } 406} 407