Android Question setup LogCat to monitor all about app crash

[peacemaker]

Hi, All

I use LogCat standardly

    logcat.LogCatStart(Array As String("-v","raw","*:F","B4A:v"), "logcat")

I save the log partially, some latest KBs, and today i have found that my app (camera app alway on the screen), that must work "forever" ... was just restarted. No any crash, as i can understand:

~l374915241:timServer = ok 24.04.2020 20:41:32.036 (+03:00)
~l477667715:API_UPDATE: t3
~l577340108:API_SAVE: logs: Data saved OK (logs)
~i:** Receiver (alive) OnReceive **
~i:*** Service (starter) Create ***            'HERE IS APP RESTART' !!!! but WHY ?!
~l1719464202:Using FileProvider? true
~i:** Service (starter) Start **
~i:** Service (alive) Create **
~i:** Service (alive) Start **
~i:Service started in foreground mode.
~l2715990785:Alive: 24.04.2020 20:41:37.389 (+03:00)
~l576815746:ph_ConnectivityChanged: CONNECTED,MOBILE
~i:** Service (alive) Start **
~l6715990785:Alive: 24.04.2020 20:41:38.037 (+03:00)
~i:*** Service (ftpsrv) Create ***
~i:** Service (ftpsrv) Start **
~i:** Activity (main) Create, isFirst = true **
~l773080207:Is detector operational: false
~i:** Activity (main) Resume **
~l8712189705:numberOfCameras= 3
~l9712189710:facing: 0, 0
~i:** Activity (main) Pause, UserClosed = false **
sending message to waiting queue (CallSubDelayed - Show_Log)
~l079961477:Download_Settings 24.04.2020 20:41:39.932 (+03:00)
~l177536643:API_LOAD: commands
~i:*** Service (httputils2service) Create ***
~i:** Service (httputils2service) Start **
sending message to waiting queue (activity_permissionresult)
running waiting messages (2)
~i:** Activity (main) Resume **
~l2712189705:numberOfCameras= 3
~l3712189710:facing: 0, 0
~l4712189705:numberOfCameras= 3
~l5712189710:facing: 0, 0
~l6712255248:Preview Orientation: 0
~l773342340:PreviewSize=1920x1080
~l873407876:CaptureSize=4608x3456
~l973538951:camEx.GetPreviewSize=[Height=1080, IsInitialized=false, Width=1920
~l973538951:]
~l074915231:Send_Table: t3
....

And it's unclear what happened.
The alive Service is:

#Region  Service Attributes
    #StartAtBoot: true
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Dim AliveSecPeriod As Int = 30
End Sub

Sub Service_Create

End Sub

Sub Service_Start (StartingIntent As Intent)
    Log("Alive: " & others.Get_Stamp)
    If IsPaused(Starter) Then
        StartService(Starter)
    End If
    If IsPaused(Main) Then
        StartActivity(Main)
    End If
    AliveSecPeriod = 30
    Starter.timAutoStart.Interval = Starter.DefaultMsecAutoRestart
    CancelScheduledService(Me)
    StartServiceAtExact(Me, DateTime.Now + DateTime.TicksPerSecond * AliveSecPeriod, True)
    Service.StopAutomaticForeground 'Call this when the background task completes (if there is one)
End Sub

Sub Service_Destroy

End Sub

Sub ExitTemporarily(TimeoutForSeconds As Int)
    Starter.timAutoStart.Enabled = False
    Starter.timAutoStart.Interval = TimeoutForSeconds * 1000 
    Starter.timAutoStart.Enabled = True
    CancelScheduledService(Me)
    StartServiceAtExact(Me, DateTime.Now + DateTime.TicksPerSecond * TimeoutForSeconds, True)
    ExitApplication
End Sub

But i need to save the log all the time on the remote app, to analyze it later when and if any trouble is occured.
How to setup the LogCat better ?

 

[Erel]

Don't assume that your app with the camera will run forever. It will not work.

Instead make it restart every hour using a secondary app.

 

[peacemaker]

It was working about 3 months. Now yes - periodical restart is used - there is very rare situation when the QR-code recognition is not started.
But anyway how to use LOgcat inside the app to control such situations ?

 

[Erel]

I don't understand what you are trying to do with LogCat.

 

[peacemaker]

To understand what hapenned those time, why app was restarted when the app's log has nothing. Maybe to setup logging more wide, not only of my app (also add system messages) ? How ?