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/*
* 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.android.cellbroadcastreceiver;
import static com.android.cellbroadcastreceiver.CellBroadcastReceiver.DBG;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.media.AudioManager;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.IBinder;
import android.os.SystemClock;
import android.os.VibrationEffect;
import android.os.Vibrator;
import android.preference.PreferenceManager;
import android.telephony.SubscriptionManager;
import android.util.Log;
import com.android.internal.annotations.VisibleForTesting;
/**
* Manages alert reminder notification.
*/
public class CellBroadcastAlertReminder extends Service {
private static final String TAG = "CellBroadcastAlertReminder";
/** Action to wake up and play alert reminder sound. */
@VisibleForTesting
public static final String ACTION_PLAY_ALERT_REMINDER = "ACTION_PLAY_ALERT_REMINDER";
/** Extra for alert reminder vibration enabled (from settings). */
@VisibleForTesting
public static final String ALERT_REMINDER_VIBRATE_EXTRA = "alert_reminder_vibrate_extra";
/**
* Pending intent for alert reminder. This is static so that we don't have to start the
* service in order to cancel any pending reminders when user dismisses the alert dialog.
*/
private static PendingIntent sPlayReminderIntent;
/**
* Alert reminder for current ringtone being played.
*/
private static Ringtone sPlayReminderRingtone;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// No intent or unrecognized action; tell the system not to restart us.
if (intent == null || !ACTION_PLAY_ALERT_REMINDER.equals(intent.getAction())) {
stopSelf();
return START_NOT_STICKY;
}
log("playing alert reminder");
playAlertReminderSound(intent.getBooleanExtra(ALERT_REMINDER_VIBRATE_EXTRA, true));
int subId = intent.getIntExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX,
SubscriptionManager.DEFAULT_SUBSCRIPTION_ID);
if (queueAlertReminder(this, subId, false)) {
return START_STICKY;
} else {
log("no reminders queued");
stopSelf();
return START_NOT_STICKY;
}
}
/**
* Use the RingtoneManager to play the alert reminder sound.
*
* @param enableVibration True to enable vibration when the alert reminder tone is playing,
* otherwise false.
*/
private void playAlertReminderSound(boolean enableVibration) {
Uri notificationUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
if (notificationUri == null) {
loge("Can't get URI for alert reminder sound");
return;
}
Ringtone r = RingtoneManager.getRingtone(this, notificationUri);
if (r != null) {
r.setStreamType(AudioManager.STREAM_NOTIFICATION);
log("playing alert reminder sound");
r.play();
} else {
loge("can't get Ringtone for alert reminder sound");
}
if (enableVibration) {
// Vibrate for 500ms.
Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(VibrationEffect.createOneShot(500, VibrationEffect.DEFAULT_AMPLITUDE));
}
}
/**
* Helper method to start the alert reminder service to queue the alert reminder.
*
* @param context Context.
* @param subId Subscription index
* @param firstTime True if entering this method for the first time, otherwise false.
*
* @return true if a pending reminder was set; false if there are no more reminders
*/
@VisibleForTesting
public static boolean queueAlertReminder(Context context, int subId, boolean firstTime) {
// Stop any alert reminder sound and cancel any previously queued reminders.
cancelAlertReminder();
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
String prefStr = prefs.getString(CellBroadcastSettings.KEY_ALERT_REMINDER_INTERVAL,
null);
int reminderIntervalMinutes;
if (prefStr == null) {
if (DBG) log("no preference value for alert reminder");
return false;
}
try {
reminderIntervalMinutes = Integer.valueOf(prefStr);
} catch (NumberFormatException ignored) {
loge("invalid alert reminder interval preference: " + prefStr);
return false;
}
if (reminderIntervalMinutes == 0) {
if (DBG) log("Reminder is turned off.");
return false;
}
// "1" means remind once, so we should do nothing if this is not the first reminder.
if (reminderIntervalMinutes == 1 && !firstTime) {
if (DBG) log("Not scheduling reminder. Done for now.");
return false;
}
if (firstTime) {
Resources res = CellBroadcastSettings.getResources(context, subId);
int interval = res.getInteger(R.integer.first_reminder_interval_in_min);
// If there is first reminder interval configured, use it.
if (interval != 0) {
reminderIntervalMinutes = interval;
} else if (reminderIntervalMinutes == 1) {
reminderIntervalMinutes = 2; // "1" = one reminder after 2 minutes
}
}
if (DBG) log("queueAlertReminder() in " + reminderIntervalMinutes + " minutes");
Intent playIntent = new Intent(context, CellBroadcastAlertReminder.class);
playIntent.setAction(ACTION_PLAY_ALERT_REMINDER);
playIntent.putExtra(ALERT_REMINDER_VIBRATE_EXTRA,
prefs.getBoolean(CellBroadcastSettings.KEY_ENABLE_ALERT_VIBRATE, true));
playIntent.putExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX, subId);
sPlayReminderIntent = PendingIntent.getService(context, 0, playIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
if (alarmManager == null) {
loge("can't get Alarm Service");
return false;
}
// remind user after 2 minutes or 15 minutes
long triggerTime = SystemClock.elapsedRealtime() + (reminderIntervalMinutes * 60000);
// We use setExact instead of set because this is for emergency reminder.
alarmManager.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP,
triggerTime, sPlayReminderIntent);
log("Set reminder in " + reminderIntervalMinutes + " minutes");
return true;
}
/**
* Stops alert reminder and cancels any queued reminders.
*/
static void cancelAlertReminder() {
if (DBG) log("cancelAlertReminder()");
if (sPlayReminderRingtone != null) {
if (DBG) log("stopping play reminder ringtone");
sPlayReminderRingtone.stop();
sPlayReminderRingtone = null;
}
if (sPlayReminderIntent != null) {
if (DBG) log("canceling pending play reminder intent");
sPlayReminderIntent.cancel();
sPlayReminderIntent = null;
}
}
private static void log(String msg) {
Log.d(TAG, msg);
}
private static void loge(String msg) {
Log.e(TAG, msg);
}
}
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