Android Question GPS reading, after a few hours it turns off - how to understand the reason for the shutdown?

amorosik said:

But first I would like to understand if that was the reason, and then if it was the operating system that shut down or not

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sfsameer said:

The GPS has to be in a background service, because :
1- Android will either stop or intercept the apps that use too much memory
2- Android has a feature called battery optimization which will prevent your app to work properly if you use these type of functions in the UI and not in the background service

We have built a tracking system for a very large company, and after a while they started reporting this problem.
using the background service solved this issue for us.

a tip :
use lower gps interval example : 5-10 ms to get better results.

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Sub Process_Globals
    Public GPS1 As GPS
    End Sub
    
Sub Service_Create
    GPS1.Initialize("GPS")
    StartGps
    End Sub
    
Public Sub StartGps
    Try
        GPS1.Start(0, 0)
        Main.gps_on=1
        Catch
        Main.gps_on=0
        End Try
    End Sub   
    
Sub GPS_LocationChanged (Location1 As Location)
    Try
        Private pagGps As frmGps
        pagGps = B4XPages.GetPage("gps")
        CallSub2(pagGps, "LocationChanged", Location1)
        Catch
        Log(LastException)
        End Try
    End Sub

amorosik said:

The app is always in the foreground, with the display always active, the phone is normally always connected to a power cable
Gps code (initialization, start, stop, reading,..) is under service module section

B4X:

Sub Process_Globals
    Public GPS1 As GPS
    End Sub
   
Sub Service_Create
    GPS1.Initialize("GPS")
    StartGps
    End Sub
   
Public Sub StartGps
    Try
        GPS1.Start(0, 0)
        Main.gps_on=1
        Catch
        Main.gps_on=0
        End Try
    End Sub  
   
Sub GPS_LocationChanged (Location1 As Location)
    Try
        Private pagGps As frmGps
        pagGps = B4XPages.GetPage("gps")
        CallSub2(pagGps, "LocationChanged", Location1)
        Catch
        Log(LastException)
        End Try
    End Sub

What do you mean 'that use too much memory'?
How can I tell if my app is using 'too much memory'?
And how can i make sure if android shuts down my app for this reason?
The 'battery optimization' feature has been expressly disabled on the app
What do you mean by 'use lower gps interval' ?
Currently with the vehicle in motion, the GPS returns a position approximately every second
Of all these points we only use one point every 60 seconds
How do you get a reading every 5ms (200 readings / sec)?

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amorosik said:

So what does it mean to read the gps device every 5ms?

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