I have created a pending intent that fires a repeating alarm every minute. The alarm works fine but when I cancel the alarm, it still fires. I have read other posts about this and I made sure that everything is as suggested, mainly to use FLAG_UPDATE_CURRENT and to use the same code for the intent, when creating and when cancelling. Here is the code I use:
Create the alarm:
final AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
final Calendar c = Calendar.getInstance();
c.setTimeInMillis(System.currentTimeMillis());
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
c.add(Calendar.MINUTE, 1);
alarmManager.setRepeating(AlarmManager.RTC, c.getTimeInMillis(), 1000 * 60, getIntent(context));
Cancel the alarm:
final AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
getIntent(context).cancel();
alarmManager.cancel(getIntent(context));
The getIntent function:
public static PendingIntent getIntent(Context context) {
return PendingIntent.getBroadcast(context, 20, new Intent(ACTION_MINUTE_ALARM), PendingIntent.FLAG_UPDATE_CURRENT);
}
Does anyone know what the problem is?
After a lot of struggle I discovered that there was another service running (different apk) that was also creating exactly the same pendingIntent using a repeating alarm. Removing that service fixed the problem. Therefore, the method described in the original question works. Hope this helps someone.
Related
I have read many articles, but non seems to work for me!
I have to schedule a repeating task with AlarmManager for everyday at 7:15. The following method is set in an activity and registered a broadcast receiver for it!
private void setTask(Context context) {
Calendar updateTime = Calendar.getInstance();
updateTime.setTimeZone(TimeZone.getTimeZone("GMT"));
updateTime.set(Calendar.HOUR_OF_DAY, 7);
updateTime.set(Calendar.MINUTE, 15);
Intent intent = new Intent(context, NotifyUpdate.class);
PendingIntent fireAlarm = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarms = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarms.setRepeating(alarms.RTC_WAKEUP, updateTime.getTimeInMillis(), alarms.INTERVAL_DAY, fireAlarm);
}
The problem is when I run the app the method gets executed immediately regardless of the time set, but not executing at (7:15).
Any Idea?
Try this before setting alarm
Calendar now = Calendar.getInstance();
if (updateTime.before(now)) {
updateTime.add(Calendar.DAY_OF_MONTH, 1); // if its in the past increment
}
alarms.setRepeating(alarms.RTC_WAKEUP, updateTime.getTimeInMillis(), alarms.INTERVAL_DAY, fireAlarm);
You said that you have immediate triggering not depending on time. It's happening because updateTime-object references at time in the past, so the goal is to set an alarm to 7:15 in the future. This will help to avoid immediate triggering.
I want to schedule an alarm according to the desired days.
E.g. sunday,tuesday,thursday.
I have scheduled it according to time but not able to do as week days.
Below is code:
private void StartScheduler(Context context) {
Calendar startTimmer = Calendar.getInstance();
startTimmer.setTimeZone(TimeZone.getDefault());
startTimmer.set(Calendar.HOUR_OF_DAY,sHour);
startTimmer.set(Calendar.MINUTE,sMinute);
startTimmer.set(Calendar.SECOND,00);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent StartAlarmTime = new Intent(Schedule_details.this, MyAlaramStartReceiver.class);
PendingIntent pendingIntent1 = PendingIntent.getBroadcast(context, 0, StartAlarmTime, 0);
alarmManager.set(AlarmManager.RTC_WAKEUP, startTimmer.getTimeInMillis(),pendingIntent1);
Log.d("<<My-Start-Alarm>>", "ALARM Set To Start At: " + startTimmer.getTime().toLocaleString());
}
any help would be greatly appreciated........!
You can just write a wrapper around the class to convert the time you set into weekdays and then set your alarm accordingly
EDIT:
check this out http://developer.android.com/reference/android/app/AlarmManager.html
This has Half-Day Interval_hour etc which might help you
in my task application, i want to create alarm service for multiple items. Here is the code i followed to create service. Lets assume, if there are more than 5 items present in list. then we will sent alarm service for 5 different times.
What if the user comes and edits the time?, how to update the system and make sure it triggers at new instance?. What if the user delete the task, how to quickly removes the registered alram for the deleted task?
What about uninstalling the app?, how to clear all the entries?, what if the system re-boots?
This is the code i'm following to register the task in alram services
Calendar Calendar_Object = Calendar.getInstance();
Calendar_Object.set(Calendar.MONTH, 8);
Calendar_Object.set(Calendar.YEAR, 2012);
Calendar_Object.set(Calendar.DAY_OF_MONTH, 6);
Calendar_Object.set(Calendar.HOUR_OF_DAY, 14);
Calendar_Object.set(Calendar.MINUTE, 25);
Calendar_Object.set(Calendar.SECOND, 0);
Step 2:
We need to create an alarm which help us to invoke the BroadCastReceiver on our specified time.
// MyView is my current Activity, and AlarmReceiver is the BoradCastReceiver
Intent myIntent = new Intent(MyView.this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(
MyView.this, 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
/*
The following sets the Alarm in the specific time by getting the long value of the alarm date time which is in calendar object by calling the getTimeInMillis(). Since Alarm supports only long value , we're using this method.
*/
alarmManager.set(AlarmManager.RTC, Calendar_Object.getTimeInMillis(),
pendingIntent);
Use this method to set Alarm :
public static void startAlarm(Context context, int alarm_code, String time) {
String[] arrTime = time.split(":");
intent = new Intent(context, AlarmReceiver.class);
intent.putExtra("CODE", alarm_code);
PendingIntent mAlarmSender = PendingIntent.getBroadcast(context,
alarm_code, intent, 0);
Calendar cal_alarm = Calendar.getInstance();
cal_alarm.setTimeZone(TimeZone.getDefault());
cal_alarm.set(Calendar.HOUR_OF_DAY, Integer.parseInt(arrTime[0]));
cal_alarm.set(Calendar.MINUTE, Integer.parseInt(arrTime[1]));
AlarmManager am = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
am.setRepeating(AlarmManager.RTC_WAKEUP, cal_alarm.getTimeInMillis(),
AlarmManager.INTERVAL_DAY, mAlarmSender);
}
Here,"int alarm_code" is your unique code for particular item.
And for update alarm first cancel the existing alarm and set new alarm for new time.For that use this method :
public static void cancelAlarm(Context context, int alarm_code) {
AlarmManager am = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context, AlarmReceiver.class);
intent.putExtra("CODE", alarm_code);
am.cancel(PendingIntent.getBroadcast(context, alarm_code, intent, 0));
}
Here,"int alarm_code" will be your unique code which you have used to set alarm.So that alarm with particular alarm_id will be cancel.You can also delete alarm with this method.
Same way you can clear all the alarms passing alarm_code to the given function.
You have to register receiver for system reboot and in onReceive of register you have to set all alarms again.
Hope this will help you.
I am using AlarmManager for my Timer. I have 2 classes.
In the first class (MainActivity) I am starting my alarm with the next code:
public void startAlarm(long Seconds) {
Intent myIntent = new Intent(MainActivity.this, MyAlarmService.class);
pendingIntent = PendingIntent.getService(MainActivity.this, 13141337,
myIntent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.SECOND, (int) Seconds);
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
pendingIntent);
}
In another class (AlarmSound), where the alarm goes off and the phone vibrates, I'm calling my cancel Alarm method.
public void stopAlarm(){
Intent intentstop = new Intent(AlarmSound.this, MyAlarmService.class);
PendingIntent senderstop = PendingIntent.getBroadcast(AlarmSound.this,
13141337, intentstop, 0);
AlarmManager myalarm = (AlarmManager) getSystemService(ALARM_SERVICE);
myalarm.cancel(senderstop);
Log.w("Karl","stopAlarm?");
}
Is this the correct way to do this? Because my alarm constantly goes off on android 4.1.
Thanks in advance!
Your Cancel wont work. The pending Intents have to match - since they have a different context (MainActivity and AlarmSound) this cancel wont work. You have to also use getService on both.
You can
a) try to recreate a matching pending Intent
b) get the pendingIntent that started the Service in the Service and use that to cancel
But usually every Alarm just goes off once if you dont use setRepeating().
Are you sure you are terminating your Service correctly with stopself() and are giving it the right flag in the onStartCommand() Method?
I need to prompt alarm according to the time values in DB. I came through lot of examples but confusing me. Could any body help to set a repeating alarm for given time like 2011-07-03 02:00:00:000 . and it should repeat for 5mints interval.
I suggest you create a service. The service can read the database and set the alarm using AlarmManager class. You can use the AlarmManager's set() or setRepeating() methods based on your use. http://developer.android.com/reference/android/app/AlarmManager.html#set%28int,%20long,%20android.app.PendingIntent%29
here is a sample of AlarmManager usage.
long triggerAtTime = SystemClock.elapsedRealtime() + triggerAfterTime;
AlarmManager mgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(context, YourAlarmReceiver.class);
PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
mgr.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtTime, pi);
YourAlarmReceiver class (usually) can be a BroadcastReceiver where your logic goes on what happens when the alarm is triggered.
There is no public API for the Calendar application, though since it is a native UI for a Google Calendar, you could push an event over to the Google Calendar via its GData API.
You can use AlarmManager class
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.SECOND, 10);
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);