Call api for every 1 minute(60*1000 milliseconds) upto 10 hours

Question

I am working on the app that runs in background and need to call api for every 1 minute(60*1000 millisecond) without any fluctuations. I have tried Scheduler,timer and things but it is not working proper. For example, my scenario is to call the api on 09:11:36 am(first api call),09:12:36 am(second api call) and so on and at the end the final api call will be at 11:20:36 pm. I used below code :

Handler minuteHandler = new Handler();
minuteHandler.postDelayed(runnable, 60000);
final Runnable runnable = new Runnable() {
@Override
public void run() {
 // your runnable code
 minuteHandler.removeCallbacks(runnable);
 minuteHandler.postDelayed(runnable, 60000);
 }
};

and

new Timer("threadname", true).scheduleAtFixedRate(new TimerTask() {
        @Override
        public void run() {
   // your runnable code              
        }
    }, 0,60*1000);

etc., My question is that it is possible to achieve in android(all OS vesions).

Where is the code you posted? Activity? Service? Some JobScheduler? — Pawel, Jul 27 '18 at 13:29
Hi @Pawel, I have tried the code in activity all well as in service. — Prasanth, Jul 27 '18 at 13:33
Why do you need such a thing? You probably won't achieve that on any phone since battery will be dead in no time. — egoldx, Jul 27 '18 at 13:35
Hi @egoldx! Sorry, the things can't be exposed and the battery draining issues are not a problem for me in this scenario. — Prasanth, Jul 27 '18 at 13:41
@Prasanth do you want to make api call even when the application is destroyed? or just as long as the application is in foreground or in the recent task? — MRah, Jul 27 '18 at 14:04
@MRah, Need to call api in foreground and as well as in background(in recent tasks), the application is not destroyed. — Prasanth, Jul 27 '18 at 14:08
@Prasanth take a look at this method and answer I have given regarding JobSchedulers https://stackoverflow.com/questions/38344220/job-scheduler-not-running-on-android-n/47760789#47760789, Check out the Doze mode discussion, you will have a good idea. I will post something for you as AlarmManager is best suited for your operation in my opinion, take a look and let me know then I'll create a sample for you — MRah, Jul 27 '18 at 14:14
@MRah Thanks. I will check this and let you know the feedback — Prasanth, Jul 30 '18 at 04:51
@MRah I have tried the code as per your reference link, the scheduler works fine but the call back not triggering on particular time interval. — Prasanth, Jul 31 '18 at 06:40
@Prasanth the job scheduler I posted will not help you in this case, it's because the next time api call happens is INTERVAL+JOB_DONE TIME, you have to restart the job immediately and then make the call. also it's not for doze mode, so for you setAlarmClock() is the best solution — MRah, Jul 31 '18 at 15:40
@MRah While using setAlarmClock() the alarm not triggers on the exact time. — Prasanth, Aug 13 '18 at 05:55
@Prasanth, did you log the lag time? Can you post it if it's available, I am going to look into this in more details today and update you — MRah, Aug 13 '18 at 15:07

Jia Li · Answer 1 · 2018-07-27T13:49:40.947

0

Try AlarmManager.setAlarmClock (API 21) or setExactAndAllowWhileIdle (API 23) with a foreground service. This is the only thing I found working in background in Android's Dose mode.

Please note, Handler stops when your activity is paused or stopped and resumes when activity is resumed.

Not sure about Timer. but, I am sure it won't work in background when device is sleeping.

edited Jul 27 '18 at 13:49

answered Jul 27 '18 at 13:47

Jia Li

488
2
8

Thanks @Jia Li, I will check. – Prasanth Jul 27 '18 at 13:49
BTW, prior to API 21, try AlarmManager.setExact. It doesn't work in Dose mode but Dose mode doesn't exist before API 21. – Jia Li Jul 27 '18 at 13:52
Yes, Alarm manager not works in this case, I have tried already. – Prasanth Jul 27 '18 at 13:54
What is not working? You cannot start service with AlarmManager? or, you cannot do it every 1 min? – Jia Li Jul 27 '18 at 13:59
the problem i am facing is the second/minute fluctuations when the device is locked. – Prasanth Jul 27 '18 at 14:01
what about wake up the device a few secs before the due time. So the device has enough time to wake up? – Jia Li Jul 27 '18 at 14:07
Yes, In this i have used wakelock and full wake lock only supports this use case(the device screen gets on/off while triggering wake lock and the battery drains asap) – Prasanth Jul 27 '18 at 14:12

score 0 · Answer 2 · answered Jul 27 '18 at 13:52

0

you can achieve that using service till api level 26 but in api level 27 service will automatically kill by the os.

answered Jul 27 '18 at 13:52

Siddhesh Golatkar

295
1
6

1

Thanks Siddhesh. I have tried using service and handled the service without killing .My question is that need to call api for every 1 minute(60*1000) without any fluctuations. – Prasanth Jul 27 '18 at 13:56

Call api for every 1 minute(60*1000 milliseconds) upto 10 hours

2 Answers2

Linked