Java tutorial
/* * Copyright (C) 2013 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.stasbar.knowyourself.alarms; import android.annotation.TargetApi; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.ContentResolver; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.net.Uri; import android.os.Build; import android.os.Handler; import android.os.PowerManager; import android.provider.Settings; import android.support.v4.app.NotificationManagerCompat; import android.text.format.DateFormat; import android.widget.Toast; import com.stasbar.knowyourself.AlarmAlertWakeLock; import com.stasbar.knowyourself.AlarmUtils; import com.stasbar.knowyourself.AsyncHandler; import com.stasbar.knowyourself.DeskClock; import com.stasbar.knowyourself.LogUtils; import com.stasbar.knowyourself.R; import com.stasbar.knowyourself.Utils; import com.stasbar.knowyourself.provider.Alarm; import com.stasbar.knowyourself.provider.AlarmInstance; import com.stasbar.knowyourself.settings.SettingsActivity; import java.util.Calendar; import java.util.Collections; import java.util.Comparator; import java.util.List; /** * This class handles all the state changes for alarm instances. You need to * register all alarm instances with the state manager if you want them to * be activated. If a major time change has occurred (ie. TIMEZONE_CHANGE, TIMESET_CHANGE), * then you must also re-register instances to fix their states. * * Please see {@link #registerInstance) for special transitions when major time changes * occur. * * Following states: * * SILENT_STATE: * This state is used when the alarm is activated, but doesn't need to display anything. It * is in charge of changing the alarm instance state to a LOW_NOTIFICATION_STATE. * * LOW_NOTIFICATION_STATE: * This state is used to notify the user that the alarm will go off * {@link AlarmInstance#LOW_NOTIFICATION_HOUR_OFFSET}. This * state handles the state changes to HIGH_NOTIFICATION_STATE, HIDE_NOTIFICATION_STATE and * DISMISS_STATE. * * HIDE_NOTIFICATION_STATE: * This is a transient state of the LOW_NOTIFICATION_STATE, where the user wants to hide the * notification. This will sit and wait until the HIGH_PRIORITY_NOTIFICATION should go off. * * HIGH_NOTIFICATION_STATE: * This state behaves like the LOW_NOTIFICATION_STATE, but doesn't allow the user to hide it. * This state is in charge of triggering a FIRED_STATE or DISMISS_STATE. * * SNOOZED_STATE: * The SNOOZED_STATE behaves like a HIGH_NOTIFICATION_STATE, but with a different message. It * also increments the alarm time in the instance to reflect the new snooze time. * * FIRED_STATE: * The FIRED_STATE is used when the alarm is firing. It will start the AlarmService, and wait * until the user interacts with the alarm via SNOOZED_STATE or DISMISS_STATE change. If the user * doesn't then it might be change to MISSED_STATE if auto-silenced was enabled. * * MISSED_STATE: * The MISSED_STATE is used when the alarm already fired, but the user could not interact with * it. At this point the alarm instance is dead and we check the parent alarm to see if we need * to disable or schedule a new alarm_instance. There is also a notification shown to the user * that he/she missed the alarm and that stays for * {@link AlarmInstance#MISSED_TIME_TO_LIVE_HOUR_OFFSET} or until the user acknownledges it. * * DISMISS_STATE: * This is really a transient state that will properly delete the alarm instance. Use this state, * whenever you want to get rid of the alarm instance. This state will also check the alarm * parent to see if it should disable or schedule a new alarm instance. */ public final class AlarmStateManager extends BroadcastReceiver { // These defaults must match the values in res/xml/settings.xml private static final String DEFAULT_SNOOZE_MINUTES = "10"; // Intent action to trigger an instance state change. public static final String CHANGE_STATE_ACTION = "change_state"; // Intent action to show the alarm and dismiss the instance public static final String SHOW_AND_DISMISS_ALARM_ACTION = "show_and_dismiss_alarm"; // Intent action for an AlarmManager alarm serving only to set the next alarm indicators private static final String INDICATOR_ACTION = "indicator"; // System intent action to notify AppWidget that we changed the alarm text. public static final String ACTION_ALARM_CHANGED = "com.stasbar.lifetimetracker.ALARM_CHANGED"; // Extra key to set the desired state change. public static final String ALARM_STATE_EXTRA = "intent.extra.alarm.state"; // Extra key to indicate the state change was launched from a notification. public static final String FROM_NOTIFICATION_EXTRA = "intent.extra.from.notification"; // Extra key to set the global broadcast id. private static final String ALARM_GLOBAL_ID_EXTRA = "intent.extra.alarm.global.id"; // Intent category tags used to dismiss, snooze or delete an alarm public static final String ALARM_DISMISS_TAG = "DISMISS_TAG"; public static final String ALARM_SNOOZE_TAG = "SNOOZE_TAG"; public static final String ALARM_DELETE_TAG = "DELETE_TAG"; // Intent category tag used when schedule state change intents in alarm manager. private static final String ALARM_MANAGER_TAG = "ALARM_MANAGER"; // Buffer time in seconds to fire alarm instead of marking it missed. public static final int ALARM_FIRE_BUFFER = 15; // A factory for the current time; can be mocked for testing purposes. private static CurrentTimeFactory sCurrentTimeFactory; // Schedules alarm state transitions; can be mocked for testing purposes. private static StateChangeScheduler sStateChangeScheduler = new AlarmManagerStateChangeScheduler(); private static Calendar getCurrentTime() { return sCurrentTimeFactory == null ? Calendar.getInstance() : sCurrentTimeFactory.getCurrentTime(); } static void setCurrentTimeFactory(CurrentTimeFactory currentTimeFactory) { sCurrentTimeFactory = currentTimeFactory; } static void setStateChangeScheduler(StateChangeScheduler stateChangeScheduler) { if (stateChangeScheduler == null) { stateChangeScheduler = new AlarmManagerStateChangeScheduler(); } sStateChangeScheduler = stateChangeScheduler; } public static int getGlobalIntentId(Context context) { SharedPreferences prefs = Utils.getDefaultSharedPreferences(context); return prefs.getInt(ALARM_GLOBAL_ID_EXTRA, -1); } public static void updateGlobalIntentId(Context context) { SharedPreferences prefs = Utils.getDefaultSharedPreferences(context); int globalId = prefs.getInt(ALARM_GLOBAL_ID_EXTRA, -1) + 1; prefs.edit().putInt(ALARM_GLOBAL_ID_EXTRA, globalId).commit(); } /** * Find and notify system what the next alarm that will fire. This is used * to update text in the system and widgets. * * @param context application context */ public static void updateNextAlarm(Context context) { final AlarmInstance nextAlarm = getNextFiringAlarm(context); if (Utils.isPreL()) { updateNextAlarmInSystemSettings(context, nextAlarm); } else { updateNextAlarmInAlarmManager(context, nextAlarm); } } /** * Returns an alarm instance of an alarm that's going to fire next. * * @param context application context * @return an alarm instance that will fire earliest relative to current time. */ public static AlarmInstance getNextFiringAlarm(Context context) { final ContentResolver cr = context.getContentResolver(); final String activeAlarmQuery = AlarmInstance.ALARM_STATE + "<" + AlarmInstance.FIRED_STATE; final List<AlarmInstance> alarmInstances = AlarmInstance.getInstances(cr, activeAlarmQuery); AlarmInstance nextAlarm = null; for (AlarmInstance instance : alarmInstances) { if (nextAlarm == null || instance.getAlarmTime().before(nextAlarm.getAlarmTime())) { nextAlarm = instance; } } return nextAlarm; } /** * Used in pre-L devices, where "next alarm" is stored in system settings. */ @SuppressWarnings("deprecation") @TargetApi(Build.VERSION_CODES.KITKAT) private static void updateNextAlarmInSystemSettings(Context context, AlarmInstance nextAlarm) { // Send broadcast message so pre-L AppWidgets will recognize an update String timeString = ""; boolean showStatusIcon = false; if (nextAlarm != null) { timeString = AlarmUtils.getFormattedTime(context, nextAlarm.getAlarmTime()); showStatusIcon = true; } // Set and notify next alarm text to system LogUtils.i("Displaying next alarm time: \'" + timeString + '\''); // Write directly to NEXT_ALARM_FORMATTED in all pre-L versions Settings.System.putString(context.getContentResolver(), Settings.System.NEXT_ALARM_FORMATTED, timeString); Intent alarmChanged = new Intent(ACTION_ALARM_CHANGED); alarmChanged.putExtra("alarmSet", showStatusIcon); context.sendBroadcast(alarmChanged); } /** * Used in L and later devices where "next alarm" is stored in the Alarm Manager. */ @TargetApi(Build.VERSION_CODES.LOLLIPOP) private static void updateNextAlarmInAlarmManager(Context context, AlarmInstance nextAlarm) { // Sets a surrogate alarm with alarm manager that provides the AlarmClockInfo for the // alarm that is going to fire next. The operation is constructed such that it is ignored // by AlarmStateManager. AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); int flags = nextAlarm == null ? PendingIntent.FLAG_NO_CREATE : 0; PendingIntent operation = PendingIntent.getBroadcast(context, 0 /* requestCode */, AlarmStateManager.createIndicatorIntent(context), flags); if (nextAlarm != null) { long alarmTime = nextAlarm.getAlarmTime().getTimeInMillis(); // Create an intent that can be used to show or edit details of the next alarm. PendingIntent viewIntent = PendingIntent.getActivity(context, nextAlarm.hashCode(), AlarmNotifications.createViewAlarmIntent(context, nextAlarm), PendingIntent.FLAG_UPDATE_CURRENT); AlarmManager.AlarmClockInfo info = new AlarmManager.AlarmClockInfo(alarmTime, viewIntent); alarmManager.setAlarmClock(info, operation); } else if (operation != null) { alarmManager.cancel(operation); } } /** * Used by dismissed and missed states, to update parent alarm. This will either * disable, delete or reschedule parent alarm. * * @param context application context * @param instance to update parent for */ private static void updateParentAlarm(Context context, AlarmInstance instance) { ContentResolver cr = context.getContentResolver(); Alarm alarm = Alarm.getAlarm(cr, instance.mAlarmId); if (alarm == null) { LogUtils.e("Parent has been deleted with instance: " + instance.toString()); return; } if (!alarm.daysOfWeek.isRepeating()) { if (alarm.deleteAfterUse) { LogUtils.i("Deleting parent alarm: " + alarm.id); Alarm.deleteAlarm(cr, alarm.id); } else { LogUtils.i("Disabling parent alarm: " + alarm.id); alarm.enabled = false; Alarm.updateAlarm(cr, alarm); } } else { // Schedule the next repeating instance which may be before the current instance if a // time jump has occurred. Otherwise, if the current instance is the next instance // and has already been fired, schedule the subsequent instance. AlarmInstance nextRepeatedInstance = alarm.createInstanceAfter(getCurrentTime()); if (instance.mAlarmState > AlarmInstance.FIRED_STATE && nextRepeatedInstance.getAlarmTime().equals(instance.getAlarmTime())) { nextRepeatedInstance = alarm.createInstanceAfter(instance.getAlarmTime()); } LogUtils.i("Creating new instance for repeating alarm " + alarm.id + " at " + AlarmUtils.getFormattedTime(context, nextRepeatedInstance.getAlarmTime())); AlarmInstance.addInstance(cr, nextRepeatedInstance); registerInstance(context, nextRepeatedInstance, true); } } /** * Utility method to create a proper change state intent. * * @param context application context * @param tag used to make intent differ from other state change intents. * @param instance to change state to * @param state to change to. * @return intent that can be used to change an alarm instance state */ public static Intent createStateChangeIntent(Context context, String tag, AlarmInstance instance, Integer state) { // This intent is directed to AlarmService, though the actual handling of it occurs here // in AlarmStateManager. The reason is that evidence exists showing the jump between the // broadcast receiver (AlarmStateManager) and service (AlarmService) can be thwarted by the // Out Of Memory killer. If clock is killed during that jump, firing an alarm can fail to // occur. To be safer, the call begins in AlarmService, which has the power to display the // firing alarm if needed, so no jump is needed. Intent intent = AlarmInstance.createIntent(context, AlarmService.class, instance.mId); intent.setAction(CHANGE_STATE_ACTION); intent.addCategory(tag); intent.putExtra(ALARM_GLOBAL_ID_EXTRA, getGlobalIntentId(context)); if (state != null) { intent.putExtra(ALARM_STATE_EXTRA, state.intValue()); } return intent; } /** * Schedule alarm instance state changes with {@link AlarmManager}. * * @param ctx application context * @param time to trigger state change * @param instance to change state to * @param newState to change to */ private static void scheduleInstanceStateChange(Context ctx, Calendar time, AlarmInstance instance, int newState) { sStateChangeScheduler.scheduleInstanceStateChange(ctx, time, instance, newState); } /** * Cancel all {@link AlarmManager} timers for instance. * * @param ctx application context * @param instance to disable all {@link AlarmManager} timers */ private static void cancelScheduledInstanceStateChange(Context ctx, AlarmInstance instance) { sStateChangeScheduler.cancelScheduledInstanceStateChange(ctx, instance); } /** * This will set the alarm instance to the SILENT_STATE and update * the application notifications and schedule any state changes that need * to occur in the future. * * @param context application context * @param instance to set state to */ public static void setSilentState(Context context, AlarmInstance instance) { LogUtils.i("Setting silent state to instance " + instance.mId); // Update alarm in db ContentResolver contentResolver = context.getContentResolver(); instance.mAlarmState = AlarmInstance.SILENT_STATE; AlarmInstance.updateInstance(contentResolver, instance); // Setup instance notification and scheduling timers AlarmNotifications.clearNotification(context, instance); scheduleInstanceStateChange(context, instance.getLowNotificationTime(), instance, AlarmInstance.LOW_NOTIFICATION_STATE); } /** * This will set the alarm instance to the LOW_NOTIFICATION_STATE and update * the application notifications and schedule any state changes that need * to occur in the future. * * @param context application context * @param instance to set state to */ public static void setLowNotificationState(Context context, AlarmInstance instance) { LogUtils.i("Setting low notification state to instance " + instance.mId); // Update alarm state in db ContentResolver contentResolver = context.getContentResolver(); instance.mAlarmState = AlarmInstance.LOW_NOTIFICATION_STATE; AlarmInstance.updateInstance(contentResolver, instance); // Setup instance notification and scheduling timers AlarmNotifications.showLowPriorityNotification(context, instance); scheduleInstanceStateChange(context, instance.getHighNotificationTime(), instance, AlarmInstance.HIGH_NOTIFICATION_STATE); } /** * This will set the alarm instance to the HIDE_NOTIFICATION_STATE and update * the application notifications and schedule any state changes that need * to occur in the future. * * @param context application context * @param instance to set state to */ public static void setHideNotificationState(Context context, AlarmInstance instance) { LogUtils.i("Setting hide notification state to instance " + instance.mId); // Update alarm state in db ContentResolver contentResolver = context.getContentResolver(); instance.mAlarmState = AlarmInstance.HIDE_NOTIFICATION_STATE; AlarmInstance.updateInstance(contentResolver, instance); // Setup instance notification and scheduling timers AlarmNotifications.clearNotification(context, instance); scheduleInstanceStateChange(context, instance.getHighNotificationTime(), instance, AlarmInstance.HIGH_NOTIFICATION_STATE); } /** * This will set the alarm instance to the HIGH_NOTIFICATION_STATE and update * the application notifications and schedule any state changes that need * to occur in the future. * * @param context application context * @param instance to set state to */ public static void setHighNotificationState(Context context, AlarmInstance instance) { LogUtils.i("Setting high notification state to instance " + instance.mId); // Update alarm state in db ContentResolver contentResolver = context.getContentResolver(); instance.mAlarmState = AlarmInstance.HIGH_NOTIFICATION_STATE; AlarmInstance.updateInstance(contentResolver, instance); // Setup instance notification and scheduling timers AlarmNotifications.showHighPriorityNotification(context, instance); scheduleInstanceStateChange(context, instance.getAlarmTime(), instance, AlarmInstance.FIRED_STATE); } /** * This will set the alarm instance to the FIRED_STATE and update * the application notifications and schedule any state changes that need * to occur in the future. * * @param context application context * @param instance to set state to */ public static void setFiredState(Context context, AlarmInstance instance) { LogUtils.i("Setting fire state to instance " + instance.mId); // Update alarm state in db ContentResolver contentResolver = context.getContentResolver(); instance.mAlarmState = AlarmInstance.FIRED_STATE; AlarmInstance.updateInstance(contentResolver, instance); if (instance.mAlarmId != null) { // if the time changed *backward* and pushed an instance from missed back to fired, // remove any other scheduled instances that may exist AlarmInstance.deleteOtherInstances(context, contentResolver, instance.mAlarmId, instance.mId); } Calendar timeout = instance.getTimeout(context); if (timeout != null) { scheduleInstanceStateChange(context, timeout, instance, AlarmInstance.MISSED_STATE); } // Instance not valid anymore, so find next alarm that will fire and notify system updateNextAlarm(context); } /** * This will set the alarm instance to the SNOOZE_STATE and update * the application notifications and schedule any state changes that need * to occur in the future. * * @param context application context * @param instance to set state to */ public static void setSnoozeState(final Context context, AlarmInstance instance, boolean showToast) { // Stop alarm if this instance is firing it AlarmService.stopAlarm(context, instance); // Calculate the new snooze alarm time String snoozeMinutesStr = Utils.getDefaultSharedPreferences(context) .getString(SettingsActivity.KEY_ALARM_SNOOZE, DEFAULT_SNOOZE_MINUTES); final int snoozeMinutes = Integer.parseInt(snoozeMinutesStr); Calendar newAlarmTime = Calendar.getInstance(); newAlarmTime.add(Calendar.MINUTE, snoozeMinutes); // Update alarm state and new alarm time in db. LogUtils.i("Setting snoozed state to instance " + instance.mId + " for " + AlarmUtils.getFormattedTime(context, newAlarmTime)); instance.setAlarmTime(newAlarmTime); instance.mAlarmState = AlarmInstance.SNOOZE_STATE; AlarmInstance.updateInstance(context.getContentResolver(), instance); // Setup instance notification and scheduling timers AlarmNotifications.showSnoozeNotification(context, instance); scheduleInstanceStateChange(context, instance.getAlarmTime(), instance, AlarmInstance.FIRED_STATE); // Display the snooze minutes in a toast. if (showToast) { final Handler mainHandler = new Handler(context.getMainLooper()); final Runnable myRunnable = new Runnable() { @Override public void run() { String displayTime = String.format(context.getResources() .getQuantityText(R.plurals.alarm_alert_snooze_set, snoozeMinutes).toString(), snoozeMinutes); Toast.makeText(context, displayTime, Toast.LENGTH_LONG).show(); } }; mainHandler.post(myRunnable); } // Instance time changed, so find next alarm that will fire and notify system updateNextAlarm(context); } public static int getSnoozedMinutes(Context context) { final String snoozeMinutesStr = Utils.getDefaultSharedPreferences(context) .getString(SettingsActivity.KEY_ALARM_SNOOZE, DEFAULT_SNOOZE_MINUTES); return Integer.parseInt(snoozeMinutesStr); } /** * This will set the alarm instance to the MISSED_STATE and update * the application notifications and schedule any state changes that need * to occur in the future. * * @param context application context * @param instance to set state to */ public static void setMissedState(Context context, AlarmInstance instance) { LogUtils.i("Setting missed state to instance " + instance.mId); // Stop alarm if this instance is firing it AlarmService.stopAlarm(context, instance); // Check parent if it needs to reschedule, disable or delete itself if (instance.mAlarmId != null) { updateParentAlarm(context, instance); } // Update alarm state ContentResolver contentResolver = context.getContentResolver(); instance.mAlarmState = AlarmInstance.MISSED_STATE; AlarmInstance.updateInstance(contentResolver, instance); // Setup instance notification and scheduling timers AlarmNotifications.showMissedNotification(context, instance); scheduleInstanceStateChange(context, instance.getMissedTimeToLive(), instance, AlarmInstance.DISMISSED_STATE); // Instance is not valid anymore, so find next alarm that will fire and notify system updateNextAlarm(context); } /** * This will set the alarm instance to the PREDISMISSED_STATE and schedule an instance state * change to DISMISSED_STATE at the regularly scheduled firing time. * * @param context application context * @param instance to set state to */ public static void setPreDismissState(Context context, AlarmInstance instance) { LogUtils.i("Setting predismissed state to instance " + instance.mId); // Update alarm in db final ContentResolver contentResolver = context.getContentResolver(); instance.mAlarmState = AlarmInstance.PREDISMISSED_STATE; AlarmInstance.updateInstance(contentResolver, instance); // Setup instance notification and scheduling timers AlarmNotifications.clearNotification(context, instance); scheduleInstanceStateChange(context, instance.getAlarmTime(), instance, AlarmInstance.DISMISSED_STATE); // Check parent if it needs to reschedule, disable or delete itself if (instance.mAlarmId != null) { updateParentAlarm(context, instance); } updateNextAlarm(context); } /** * This just sets the alarm instance to DISMISSED_STATE. */ public static void setDismissState(Context context, AlarmInstance instance) { LogUtils.i("Setting dismissed state to instance " + instance.mId); instance.mAlarmState = AlarmInstance.DISMISSED_STATE; final ContentResolver contentResolver = context.getContentResolver(); AlarmInstance.updateInstance(contentResolver, instance); } /** * This will delete the alarm instance, update the application notifications, and schedule * any state changes that need to occur in the future. * * @param context application context * @param instance to set state to */ public static void deleteInstanceAndUpdateParent(Context context, AlarmInstance instance) { LogUtils.i("Deleting instance " + instance.mId + " and updating parent alarm."); // Remove all other timers and notifications associated to it unregisterInstance(context, instance); // Check parent if it needs to reschedule, disable or delete itself if (instance.mAlarmId != null) { updateParentAlarm(context, instance); } // Delete instance as it is not needed anymore AlarmInstance.deleteInstance(context.getContentResolver(), instance.mId); // Instance is not valid anymore, so find next alarm that will fire and notify system updateNextAlarm(context); } /** * This will set the instance state to DISMISSED_STATE and remove its notifications and * alarm timers. * * @param context application context * @param instance to unregister */ public static void unregisterInstance(Context context, AlarmInstance instance) { LogUtils.i("Unregistering instance " + instance.mId); // Stop alarm if this instance is firing it AlarmService.stopAlarm(context, instance); AlarmNotifications.clearNotification(context, instance); cancelScheduledInstanceStateChange(context, instance); setDismissState(context, instance); } /** * This registers the AlarmInstance to the state manager. This will look at the instance * and choose the most appropriate state to put it in. This is primarily used by new * alarms, but it can also be called when the system time changes. * * Most state changes are handled by the states themselves, but during major time changes we * have to correct the alarm instance state. This means we have to handle special cases as * describe below: * * <ul> * <li>Make sure all dismissed alarms are never re-activated</li> * <li>Make sure pre-dismissed alarms stay predismissed</li> * <li>Make sure firing alarms stayed fired unless they should be auto-silenced</li> * <li>Missed instance that have parents should be re-enabled if we went back in time</li> * <li>If alarm was SNOOZED, then show the notification but don't update time</li> * <li>If low priority notification was hidden, then make sure it stays hidden</li> * </ul> * * If none of these special case are found, then we just check the time and see what is the * proper state for the instance. * * @param context application context * @param instance to register */ public static void registerInstance(Context context, AlarmInstance instance, boolean updateNextAlarm) { final ContentResolver cr = context.getContentResolver(); final Alarm alarm = Alarm.getAlarm(cr, instance.mAlarmId); final Calendar currentTime = getCurrentTime(); final Calendar alarmTime = instance.getAlarmTime(); final Calendar timeoutTime = instance.getTimeout(context); final Calendar lowNotificationTime = instance.getLowNotificationTime(); final Calendar highNotificationTime = instance.getHighNotificationTime(); final Calendar missedTTL = instance.getMissedTimeToLive(); // Handle special use cases here if (instance.mAlarmState == AlarmInstance.DISMISSED_STATE) { // This should never happen, but add a quick check here LogUtils.e("Alarm Instance is dismissed, but never deleted"); deleteInstanceAndUpdateParent(context, instance); return; } else if (instance.mAlarmState == AlarmInstance.FIRED_STATE) { // Keep alarm firing, unless it should be timed out boolean hasTimeout = timeoutTime != null && currentTime.after(timeoutTime); if (!hasTimeout) { setFiredState(context, instance); return; } } else if (instance.mAlarmState == AlarmInstance.MISSED_STATE) { if (currentTime.before(alarmTime)) { if (instance.mAlarmId == null) { LogUtils.i("Cannot restore missed instance for one-time alarm"); // This instance parent got deleted (ie. deleteAfterUse), so // we should not re-activate it.- deleteInstanceAndUpdateParent(context, instance); return; } // TODO: This will re-activate missed snoozed alarms, but will // use our normal notifications. This is not ideal, but very rare use-case. // We should look into fixing this in the future. // Make sure we re-enable the parent alarm of the instance // because it will get activated by by the below code alarm.enabled = true; Alarm.updateAlarm(cr, alarm); } } else if (instance.mAlarmState == AlarmInstance.PREDISMISSED_STATE) { if (currentTime.before(alarmTime)) { setPreDismissState(context, instance); } else { deleteInstanceAndUpdateParent(context, instance); } return; } // Fix states that are time sensitive if (currentTime.after(missedTTL)) { // Alarm is so old, just dismiss it deleteInstanceAndUpdateParent(context, instance); } else if (currentTime.after(alarmTime)) { // There is a chance that the TIME_SET occurred right when the alarm should go off, so // we need to add a check to see if we should fire the alarm instead of marking it // missed. Calendar alarmBuffer = Calendar.getInstance(); alarmBuffer.setTime(alarmTime.getTime()); alarmBuffer.add(Calendar.SECOND, ALARM_FIRE_BUFFER); if (currentTime.before(alarmBuffer)) { setFiredState(context, instance); } else { setMissedState(context, instance); } } else if (instance.mAlarmState == AlarmInstance.SNOOZE_STATE) { // We only want to display snooze notification and not update the time, // so handle showing the notification directly AlarmNotifications.showSnoozeNotification(context, instance); scheduleInstanceStateChange(context, instance.getAlarmTime(), instance, AlarmInstance.FIRED_STATE); } else if (currentTime.after(highNotificationTime)) { setHighNotificationState(context, instance); } else if (currentTime.after(lowNotificationTime)) { // Only show low notification if it wasn't hidden in the past if (instance.mAlarmState == AlarmInstance.HIDE_NOTIFICATION_STATE) { setHideNotificationState(context, instance); } else { setLowNotificationState(context, instance); } } else { // Alarm is still active, so initialize as a silent alarm setSilentState(context, instance); } // The caller prefers to handle updateNextAlarm for optimization if (updateNextAlarm) { updateNextAlarm(context); } } /** * This will delete and unregister all instances associated with alarmId, without affect * the alarm itself. This should be used whenever modifying or deleting an alarm. * * @param context application context * @param alarmId to find instances to delete. */ public static void deleteAllInstances(Context context, long alarmId) { ContentResolver cr = context.getContentResolver(); List<AlarmInstance> instances = AlarmInstance.getInstancesByAlarmId(cr, alarmId); for (AlarmInstance instance : instances) { unregisterInstance(context, instance); AlarmInstance.deleteInstance(context.getContentResolver(), instance.mId); } updateNextAlarm(context); } /** * Delete and unregister all instances unless they are snoozed. This is used whenever an alarm * is modified superficially (label, vibrate, or ringtone change). */ public static void deleteNonSnoozeInstances(Context context, long alarmId) { ContentResolver cr = context.getContentResolver(); List<AlarmInstance> instances = AlarmInstance.getInstancesByAlarmId(cr, alarmId); for (AlarmInstance instance : instances) { if (instance.mAlarmState == AlarmInstance.SNOOZE_STATE) { continue; } unregisterInstance(context, instance); AlarmInstance.deleteInstance(context.getContentResolver(), instance.mId); } updateNextAlarm(context); } /** * Fix and update all alarm instance when a time change event occurs. * * @param context application context */ public static void fixAlarmInstances(Context context) { // Register all instances after major time changes or when phone restarts final ContentResolver contentResolver = context.getContentResolver(); final Calendar currentTime = getCurrentTime(); // Sort the instances in reverse chronological order so that later instances are fixed or // deleted before re-scheduling prior instances (which may re-create or update the later // instances). final List<AlarmInstance> instances = AlarmInstance.getInstances(contentResolver, null /* selection */); Collections.sort(instances, new Comparator<AlarmInstance>() { @Override public int compare(AlarmInstance lhs, AlarmInstance rhs) { return rhs.getAlarmTime().compareTo(lhs.getAlarmTime()); } }); for (AlarmInstance instance : instances) { final Alarm alarm = Alarm.getAlarm(contentResolver, instance.mAlarmId); if (alarm == null) { unregisterInstance(context, instance); AlarmInstance.deleteInstance(contentResolver, instance.mId); LogUtils.e("Found instance without matching alarm; deleting instance %s", instance); continue; } final Calendar priorAlarmTime = alarm.getPreviousAlarmTime(instance.getAlarmTime()); final Calendar missedTTLTime = instance.getMissedTimeToLive(); if (currentTime.before(priorAlarmTime) || currentTime.after(missedTTLTime)) { final Calendar oldAlarmTime = instance.getAlarmTime(); final Calendar newAlarmTime = alarm.getNextAlarmTime(currentTime); final CharSequence oldTime = DateFormat.format("MM/dd/yyyy hh:mm a", oldAlarmTime); final CharSequence newTime = DateFormat.format("MM/dd/yyyy hh:mm a", newAlarmTime); LogUtils.i("A time change has caused an existing alarm scheduled to fire at %s to" + " be replaced by a new alarm scheduled to fire at %s", oldTime, newTime); // The time change is so dramatic the AlarmInstance doesn't make any sense; // remove it and schedule the new appropriate instance. AlarmStateManager.deleteInstanceAndUpdateParent(context, instance); } else { registerInstance(context, instance, false /* updateNextAlarm */); } } updateNextAlarm(context); } /** * Utility method to set alarm instance state via constants. * * @param context application context * @param instance to change state on * @param state to change to */ private static void setAlarmState(Context context, AlarmInstance instance, int state) { if (instance == null) { LogUtils.e("Null alarm instance while setting state to %d", state); return; } switch (state) { case AlarmInstance.SILENT_STATE: setSilentState(context, instance); break; case AlarmInstance.LOW_NOTIFICATION_STATE: setLowNotificationState(context, instance); break; case AlarmInstance.HIDE_NOTIFICATION_STATE: setHideNotificationState(context, instance); break; case AlarmInstance.HIGH_NOTIFICATION_STATE: setHighNotificationState(context, instance); break; case AlarmInstance.FIRED_STATE: setFiredState(context, instance); break; case AlarmInstance.SNOOZE_STATE: setSnoozeState(context, instance, true /* showToast */); break; case AlarmInstance.MISSED_STATE: setMissedState(context, instance); break; case AlarmInstance.PREDISMISSED_STATE: setPreDismissState(context, instance); break; case AlarmInstance.DISMISSED_STATE: deleteInstanceAndUpdateParent(context, instance); break; default: LogUtils.e("Trying to change to unknown alarm state: " + state); } } @Override public void onReceive(final Context context, final Intent intent) { if (INDICATOR_ACTION.equals(intent.getAction())) { return; } final PendingResult result = goAsync(); final PowerManager.WakeLock wl = AlarmAlertWakeLock.createPartialWakeLock(context); wl.acquire(); AsyncHandler.post(new Runnable() { @Override public void run() { handleIntent(context, intent); result.finish(); wl.release(); } }); } public static void handleIntent(Context context, Intent intent) { final String action = intent.getAction(); LogUtils.v("AlarmStateManager received intent " + intent); if (CHANGE_STATE_ACTION.equals(action)) { Uri uri = intent.getData(); AlarmInstance instance = AlarmInstance.getInstance(context.getContentResolver(), AlarmInstance.getId(uri)); if (instance == null) { LogUtils.e("Can not change state for unknown instance: " + uri); return; } int globalId = getGlobalIntentId(context); int intentId = intent.getIntExtra(ALARM_GLOBAL_ID_EXTRA, -1); int alarmState = intent.getIntExtra(ALARM_STATE_EXTRA, -1); if (intentId != globalId) { LogUtils.i("IntentId: " + intentId + " GlobalId: " + globalId + " AlarmState: " + alarmState); // Allows dismiss/snooze requests to go through if (!intent.hasCategory(ALARM_DISMISS_TAG) && !intent.hasCategory(ALARM_SNOOZE_TAG)) { LogUtils.i("Ignoring old Intent"); return; } } if (alarmState >= 0) { setAlarmState(context, instance, alarmState); } else { registerInstance(context, instance, true); } } else if (SHOW_AND_DISMISS_ALARM_ACTION.equals(action)) { Uri uri = intent.getData(); AlarmInstance instance = AlarmInstance.getInstance(context.getContentResolver(), AlarmInstance.getId(uri)); if (instance == null) { LogUtils.e("Null alarminstance for SHOW_AND_DISMISS"); // dismiss the notification final int id = intent.getIntExtra(AlarmNotifications.EXTRA_NOTIFICATION_ID, -1); if (id != -1) { NotificationManagerCompat.from(context).cancel(id); } return; } long alarmId = instance.mAlarmId == null ? Alarm.INVALID_ID : instance.mAlarmId; final Intent viewAlarmIntent = Alarm.createIntent(context, DeskClock.class, alarmId) .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // Open DeskClock which is now positioned on the alarms tab. context.startActivity(viewAlarmIntent); deleteInstanceAndUpdateParent(context, instance); } } /** * Creates an intent that can be used to set an AlarmManager alarm to set the next alarm * indicators. */ public static Intent createIndicatorIntent(Context context) { return new Intent(context, AlarmStateManager.class).setAction(INDICATOR_ACTION); } /** * Abstract away how the current time is computed. If no implementation of this interface is * given the default is to return {@link Calendar#getInstance()}. Otherwise, the factory * instance is consulted for the current time. */ interface CurrentTimeFactory { Calendar getCurrentTime(); } /** * Abstracts away how state changes are scheduled. The {@link AlarmManagerStateChangeScheduler} * implementation schedules callbacks within the system AlarmManager. Alternate * implementations, such as test case mocks can subvert this behavior. */ interface StateChangeScheduler { void scheduleInstanceStateChange(Context context, Calendar time, AlarmInstance instance, int newState); void cancelScheduledInstanceStateChange(Context context, AlarmInstance instance); } /** * Schedules state change callbacks within the AlarmManager. */ private static class AlarmManagerStateChangeScheduler implements StateChangeScheduler { @Override public void scheduleInstanceStateChange(Context context, Calendar time, AlarmInstance instance, int newState) { final long timeInMillis = time.getTimeInMillis(); LogUtils.v("Scheduling state change %d to instance %d at %s (%d)", newState, instance.mId, AlarmUtils.getFormattedTime(context, time), timeInMillis); final Intent stateChangeIntent = createStateChangeIntent(context, ALARM_MANAGER_TAG, instance, newState); // Treat alarm state change as high priority, use foreground broadcasts stateChangeIntent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); PendingIntent pendingIntent = PendingIntent.getService(context, instance.hashCode(), stateChangeIntent, PendingIntent.FLAG_UPDATE_CURRENT); final AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); if (Utils.isMOrLater()) { // Ensure the alarm fires even if the device is dozing. am.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, timeInMillis, pendingIntent); } else { am.setExact(AlarmManager.RTC_WAKEUP, timeInMillis, pendingIntent); } } @Override public void cancelScheduledInstanceStateChange(Context context, AlarmInstance instance) { LogUtils.v("Canceling instance " + instance.mId + " timers"); // Create a PendingIntent that will match any one set for this instance PendingIntent pendingIntent = PendingIntent.getService(context, instance.hashCode(), createStateChangeIntent(context, ALARM_MANAGER_TAG, instance, null), PendingIntent.FLAG_NO_CREATE); if (pendingIntent != null) { AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); am.cancel(pendingIntent); pendingIntent.cancel(); } } } }