Android Question StartServiceAtExact

Cristian Achim said:

Can I set a service to run with StartServiceAtExact to every 20 minutes. Something like StartServiceAtExact(Me, TimeToRun, True) and how can I do this?

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by calling “StartServiceAtExact” as soon as the service has been started by the previous “StartServiceAtExact”.

Alexander Stolte said:

by calling “StartServiceAtExact” as soon as the service has been started by the previous “StartServiceAtExact”.

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I will try. Thank you!

Cristian Achim said:

I will try. Thank you!

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It seems to work. The problem was from a some piece of code that has generate an error and kill the app, error which did not manifest itself until I reinstalled the emulator and I updated sdk. Thank you again!

On Android 8 (Samsung Galaxy A6) And Android 12 (Samsung Galaxy S10+) it does not work, work only in Android 14. Some advice please?

First step is to switch to receivers: Receivers and Services in 2023+

Android will not let your app run every 20 minutes, especially not if the user kills the app. In that case it will not start your app at all.

Cristian Achim said:

Hi,

Can I set a service to run with StartServiceAtExact to every 20 minutes. Something like StartServiceAtExact(Me, TimeToRun, True) and how can I do this?

I tried to verify on three devices and after a short period of time, after application is closed from recent list, the service not start again.

Thank you!

B4X:

Sub Service_Start (StartingIntent As Intent)

Dim Fix, M20, M40, NextHour As Long
Dim Now As Long = DateTime.Now

Dim Per As Period
Per.Hours = 1

Dim NextRun As Int

Fix = DateUtils.SetDateAndTime(DateTime.GetYear(Now), DateTime.GetMonth(Now), DateTime.GetDayOfMonth(Now), DateTime.GetHour(Now), 0, 0)
M20 = DateUtils.SetDateAndTime(DateTime.GetYear(Now), DateTime.GetMonth(Now), DateTime.GetDayOfMonth(Now), DateTime.GetHour(Now), 20, 0)
M40 = DateUtils.SetDateAndTime(DateTime.GetYear(Now), DateTime.GetMonth(Now), DateTime.GetDayOfMonth(Now), DateTime.GetHour(Now), 40, 0)

NextHour = DateUtils.AddPeriod(Fix, Per)

If Now >= Fix And Now < M20 Then
NextRun = DateUtils.PeriodBetween(Now, M20).Minutes + 1
Else If Now >= M20 And Now < M40 Then
NextRun = DateUtils.PeriodBetween(Now, M40).Minutes + 1
Else If Now >= M40 Then
NextRun = DateUtils.PeriodBetween(Now, NextHour).Minutes + 1
End If
   
Dim TimeToRun As Long
TimeToRun = DateTime.TimeParse(DateTime.GetHour(DateTime.Now) & ":" & DateTime.GetMinute(DateTime.Now) & ":00") + NextRun * DateTime.TicksPerMinute

StartReceiver(NTF)

StartServiceAtExact(Me, TimeToRun, True)

Service.StopAutomaticForeground
End Sub

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Hi Erel,

I finished this code two days ago and I tested on five Samsung devices with a service that is running a receiver every hour to 00, 20 and 40 minutes.
After I removed the application from recent list, the situation is:

Galaxy A6 - Android 8 - It works perfectly
Galaxy S10 - Android 12 - It always runs, although there may be a delay of several hours
Galaxy S10+ - Android 12- It always runs, although there may be a delay of several hours
Galaxy S21 Ultra - Android 14 - It works perfectly
Galaxy S24 Plus - Andoid 14 - It works perfectly

Thank you!