I want to set notification for an event which will repeat every day. So the notification should come everyday at event time. How to set any notification in NotificationManager so that it repeats after certain period of time.
If you are using AlarmManager class, it's more easier that to setup a service.
alarmManager class has a setRepeating method that repeats your alarm call at given interval after given time.
Like..
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
Intent AlarmIntent = new Intent(CONTEXT, RECEIVERCLASS.class);
ID,AlarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,YOURCALENDAR.getTimeInMillis(), AlarmManager.INTERVAL_DAY, Sender);
In the setRepeating argument, you can set the YOURCALENDAR member to the time you want......
You kinda need a Service
for this, if I got your question right
for this u have 2 made one service class that notify your event.
when any event occurs just call start notification on event. if u not get proper idea that comment on this ans. i'll explain in detail.
Related
I want to trigger a daily alarm in my application. I can see the alarm being triggered daily at the correct time for 2 or 3 days but it does not trigger after that. For example if I set alarm to trigger at 08:00 AM, it will trigger at 8 AM daily for 2 or 3 days and after that there is no alarm triggered. There is no app crashing or anything, it simply does not trigger. I have a BroadcastReceiver registered (in AndroidManifest.xml) for this alarm and i can see logs being printed daily at the correct time but only for 2 or 3 days. After that there is no activity and the app just seems to die down.
Please find my code below :
final AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
final long intervalDay = 60*60*24*1000L;
final long alarmTime = calendar.getTimeInMillis();
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, alarmTime, intervalDay, pendingIntent);
I have also used alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, alarmTime, AlarmManager.INTERVAL_DAY, pendingIntent); but it did not make any difference (didnt expect it to make any though).
I do not want to use alarmManager.setInexactRepeating() as it does not trigger the alarm at exact time but there is slight delay.
Any help appreciated !!
Thanks.
That's because android cannot hold the alarm content for more than 2-3 days. Though there is no sure shot solution that i know.
I fixed it by cancelling and resetting alarm everytime alarm is triggered.
Something like this.
Instead of using setRepeat use set or setExact to trigger for once:
if(android.os.Build.VERSION.SDK_INT<Build.VERSION_CODES.KITKAT) {
alarmManager.set(AlarmManager.RTC_WAKEUP, alarmtime, pendingIntent);
} else {
alarmManager.setExact(AlarmManager.RTC_WAKEUP, alarmtime, pendingIntent);
}
Then in onRecieve() method of your alarmReciever after performing your task, reset the alarm again for next followed by cancelling all pending intents:
PendingIntent pendingIntent = PendingIntent.getBroadcast(context.getApplicationContext(), reminderModal.get_remindID(), intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) context.getApplicationContext().getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(pendingIntent);
pendingIntent.cancel();
Hope it helps.
I have created a configure activity for my widget, where the user can choose from various update frequencies.. Until now I started the alarm in the OnEnabled() method, like this:
Intent intent = new Intent(CLOCK_WIDGET_UPDATE);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC, System.currentTimeMillis(), 1000 * 60,
pendingIntent);
The settings are saved in shared preferences with a unique name (widgetId) and in this OnEnabled() method I can't retrieve the settings here because I can't get the widgetId yet.
There's an another problem, the user can change the frequency anytime, but this method is called just once, at the beginning. So I think I need to start the alarm in OnUpdate(), but I don't know how to do it, I don't want to make multiple instances of an alarm accidentally so I would like to ask for some advice.
To answer your second problem, calling setRepeating multiple times will not create multiple alarm as far as you provide same PendingIntent and same request code along with PendingIntent.FLAG_UPDATE_CURRENT flag. I would also suggest to use setInexactRepeating instead of setRepeating. So you can use the same code in OnUpdate() too with new frequency. Go through docs of FLAG_UPDATE_CURRENT and setInexactRepeating for more detials.
I dont now if question already exists but i really need help. I need to upload data in intervals (hour, daily etc.). Interval information comes from the spinner (put to SharedPreferences) and when the interval is picked, timer(Handler) needs to start count. The main problem is how to make broadcast receiver to sart on spinner itemchecked, from main activity? Maybe its better way to start it with service, but how to start broadcast on spinner item selected in service. I hope someone understands the problem.
You could write the code that handles the uploads as a service and then start that service via the AlarmManager
http://developer.android.com/reference/android/app/AlarmManager.html
Intent intent = new Intent(this, myUploadService.class);
PendingIntent pintent = PendingIntent.getService(this, 0, intent, 0);
AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarm.setRepeating(AlarmManager.RTC_WAKEUP, yourWakeUpTime, interval, pintent);
so the intent will be your service.
yourWakeUpTime is the time when the service should start first.
interval will be the time selected from your spinner.
I want to create a broadcast receiver that will get notified when an alarm is started.
For example I set the alarm to 10 am and I go to sleep, then when the alarm is fired I want to have an receiver that will be notified.
Is it possible to do this ?, is there any intent that is fired on alarm start ?
For setting alarm use Alarm-manager class. You can set alarm using pending intent and using calendar you can set the time. Check the following code, in this AlarmReceiever is broadcast receiver which receives intent from pending intent at specific time that you can set in set method as second parameter .
Intent alaram=new Intent(FirstActivity.this,AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(FirstActivity.this, 0, alaram,PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP,cal.getTimeInMillis(),pendingIntent);
//cal.setTimeInMillis(System.currentTimeMillis());
cant you use pendingIntent too!! just saying
It appears that there is no standart alarm used by alarm applications. So either you have to look up used alarm in your logs and use it ( this will be alarm application dependent, and
surely not portable ) or just use alarm manager and schedule your own alarm
This works fine:
Intent intent = new Intent(HelloAndroid2.this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(HelloAndroid2.this, 0,
intent, PendingIntent.FLAG_ONE_SHOT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (12 * 1000), pendingIntent);
This doesn't work. I hear the alarm only time.
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (12 * 1000), 3 * 1000, pendingIntent);
I have also tried this, no luck:
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.SECOND, 5);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 7000, pendingIntent);
What is the problem?
From the PendingIntent doc for FLAG_ONE_SHOT:
this PendingIntent can
only be used once. If set, after
send() is called on it, it will be
automatically canceled for you and any
future attempt to send through it will
fail.
So after the pendingIntent is fired the first time, it will be cancelled and the next attempt to send it via the alarm manager will fail
Try using FLAG_UPDATE_CURRENT
Looking at your code samples in order:
In your first sample you are using AlarmManager.set - this is strictly for one-off alarms so yes, it will only fire once. If you want to use AlarmManager.set then the last thing the code triggered should do is to set a fresh alarm (which should also use a fresh PendingIntent).
In your second example you are using a repeating alarm. You do not need to create a fresh PendingIntent each time this fires as the OS takes care of the repeating aspect of the alarm.
There is no reason why your alarm should not repeat every 3 seconds, so I would start looking at the BroadcastReceiver implementation you have written to handle the alarm.
Check that you've implemented it properly. Comment out all the code in the onReceive() method and instead just have it writing a log message. Once you see your log message appearing in the logcat every time the alarm fires, add your code back in (keeping the log message), and another log message to the end of the method. This allows you to see how long the method takes to execute - you want it to be finished before the alarm fires again to avoid any unexpected side effects.
As an aside, if you want a repeating alarm, android.os.Handler is a much more efficient approach although alarms set through AlarmManager do fire very accurately.