Android Question My app crashes

Baris Karadeniz · Mar 20, 2017

My app crashes after working some time. I couldn't find why it crashes. Is there anyone who can help me? I can send my app.

KMatle · Mar 20, 2017

Baris Karadeniz said:
Is there anyone who can help me? I can send my app.

Hi Baris. We are not able to test your app for hours ('till the app crashes). It's abolutely necessary that you learn how to debug your apps. Of course we help with errors you can't fix on your own

For sure there is a log when it crashes. So please check it first (uncheck filtered logs) and see. Run it in debug or get the logs in Release by setting

B4X:

#BridgeLogger: True

(Update the B4A Bridge to the newest version)

Baris Karadeniz · Mar 20, 2017

There is no crash in debug mode. There is a crash in release mode. Where should I write #BridgeLogger: True ?

ilan · Mar 20, 2017

It sounds like a memory issue.
What is it for an app?

If u put this line to the manifest it may solve your problem

B4X:

SetApplicationAttribute(android:largeHeap,"true")

BUT this is not the right way to solve the problem you should find the reason why your app consume a lot of memory and try to fix it.

MarcoRome · Mar 20, 2017

Baris Karadeniz said:
Where should I write #BridgeLogger: True ?

Where you want but is good practise put this in first line module Main of course:

B4X:

#Region  Project Attributes
    #ApplicationLabel: B4A Example
    #VersionCode: 1
    #VersionName:
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: unspecified
    #CanInstallToExternalStorage: False
#End Region

#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: True
#End Region


#BridgeLogger: True

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.

End Sub

Baris Karadeniz · Mar 20, 2017

My app is for gps. It sends information to the server. It uses camera and webwiew. My app is given attached.

Erel · Mar 20, 2017

If you don't see the logs in release mode with #BridgeLogger then you need to switch to USB debug mode (ADB).

Baris Karadeniz · Mar 20, 2017

Here is the log. I think crash occurs at; ** Service (starter) Create **

** Service (starter) Start **
** Service (starter) Start **

tigrot · Mar 20, 2017

Are u starting starter somewhere? Seems a loop.

Baris Karadeniz · Mar 20, 2017

Yes I start starter. You can see the codes below;

B4X:

Sub BtnSystemOnOff_CheckedChange(Checked As Boolean)
    If TextFieldimei.Text.Length = 15 Then
        If Starter.GPS1.GPSEnabled = True Then
            If BtnSystemOnOff.Checked = True Then   
                BtnSystemOnOff.Color = Colors.Green
                systemon = True
                StartService(Starter)
                Event = ""
            Else
                BtnSystemOnOff.Color = Colors.Red
                systemon = False
                StopService(Starter)           
            End If
        Else
            Msgbox(lblgpstextdisable, warningtitle1)
        End If
    Else
        Msgbox(warning1, warningtitle1)
    End If
End Sub

Erel · Mar 21, 2017

You should never start or stop the Starter service.

Baris Karadeniz · Mar 21, 2017

Where should I write the code below?

B4X:

StartServiceAt("", DateTime.Now + 6 * DateTime.TicksPerSecond, True)

Erel · Mar 21, 2017

Use a different service for this. The starter server should never be explicitly started.

BTW, I've removed most of the logs text. It makes this thread unreadable. It is better to post such logs as a text file.

Baris Karadeniz · Mar 21, 2017

Which service can I use instead of StartServiceAt?

Erel · Mar 21, 2017

Any service you like: Project - Add New Module - Service Module.

DonManfred · Mar 21, 2017

Any other than the starter service.

tigrot · Mar 21, 2017

I made this error just a few months ago, so I have learnt this rule by myself: never "disturb" a running Starter service!

Baris Karadeniz · Mar 21, 2017

tigrot said:
I made this error just a few months ago, so I have learnt this rule by myself: never "disturb" a running Starter service!

How did you solve this problem?

DonManfred · Mar 21, 2017

Baris Karadeniz said:
How did you solve this problem?

Dont start or Stop the starter-Service. Most probably you should use another service if you need to restart/start/stop it

Baris Karadeniz · Mar 22, 2017

I added new service module named as "Starter2". I wrote the code below (StartServiceAt ....) into Starter2;

B4X:

#Region  Service Attributes
    #StartAtBoot: False
   
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.

End Sub

Sub Service_Create

End Sub

Sub Service_Start (StartingIntent As Intent)
    StartServiceAt(Starter, DateTime.Now + 6 * DateTime.TicksPerSecond, True)
End Sub

Sub Service_Destroy

End Sub

To start the "Starter2" I wrote the code below into the Main;

B4X:

ub BtnSystemOnOff_CheckedChange(Checked As Boolean)
    If TextFieldimei.Text.Length = 15 Then
        If Starter.GPS1.GPSEnabled = True Then
            If BtnSystemOnOff.Checked = True Then   
                BtnSystemOnOff.Color = Colors.Green
                systemon = True
                StartService(Starter2)
                Event = ""
            Else
                BtnSystemOnOff.Color = Colors.Red
                systemon = False
                StopService(Starter2)           
            End If
        Else
            Msgbox(lblgpstextdisable, warningtitle1)
        End If
    Else
        Msgbox(warning1, warningtitle1)
    End If
End Sub

But it doesn't work.

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