Android Question help: crash in release - OK in debug

[Zeev Goldstein]

hi,

me again...

my app runs presently in usb debug mode - no errors and all is fine

when i run it in release mode i get this error and the app crashes


java.lang.Exception: Sub ips_tag_data was not found.
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:219)
at anywheresoftware.b4a.BA$2.run(BA.java:387)
at android.os.Handler.handleCallback(Handler.java:907)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:216)
at android.app.ActivityThread.main(ActivityThread.java:7625)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)
java.lang.Exception: Sub ips_tag_data was not found.
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:219)
at anywheresoftware.b4a.BA$2.run(BA.java:387)
at android.os.Handler.handleCallback(Handler.java:907)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:216)
at android.app.ActivityThread.main(ActivityThread.java:7625)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)

any ideas ?
thanks

 

[DonManfred]

any ideas ?

Yes. Post the code you are using. We can not guess it.
Anything related to ips_tag_data is important

 

[Zeev Goldstein]

Thanks but that would be very problematic, the code is huge (many thousands of lines)
I'm trying to implement Johan's TapCard library.

In debug it works fine
Only in release I get the error

 

[agraham]

Release obfuscated or not? Have you tried both options?

 

[Zeev Goldstein]

Yes, tried them both

BTW - what's the difference and which is recommended to use and to upload to google play store?

 

[agraham]

Forum search still works quite well

Code Obfuscation

This tutorial is relevant for B4A and B4J. During compilation B4A generates Java code which is then compiled with the Java compiler and converted to Dalvik (Android byte code format). There are tools that allow decompilation of Dalvik byte code into Java code. The purpose of obfuscation is to...

www.b4x.com

 

[Zeev Goldstein]

Thank you!

 

[josejad]

the code is huge (many thousands of lines)

Just guessing, do your code have some sub called ips_tag_data?

 

[Zeev Goldstein]

No.

 

[agraham]

From the stack trace it looks like an event or maybe CallSubDelayed is trying to invoke a Sub called ips_tag_data. It is being called off the message loop and not directly from your code.

 

[Zeev Goldstein]

Thanks
But I don't have such a sub in my code (maybe Johan has one in his code)

How do you explain the fact that it doesn't happen in debug mode?

 

[agraham]

No idea seeing we haven't seen a single line of code.

 

[Zeev Goldstein]

I will try to compare his sample to my code maybe I'll find something
I will update...

 

[agraham]

If you look in the b4aTapCard demo project the TapCard object is initialized with the event prefix "ip" and there exists an event Sub called ips_tag_data

'this event bring back tagName, the Tag itself (HEX), the Tag length (HEX), and the Tag values (HEX) to the B4A project (from the library)
Sub ips_tag_data (tagname As String, tags As String, taglengths As String, tagvalues As String)

    EditText2.Visible = True                 'make edittext2 visible
    tgname.Add(tagname)                      'add a tag name
    tg.Add(tags)                             'add the tag
    tglength.Add(taglengths)                 'add the tag length
    tgvalue.Add(tagvalues)                   'add the tag value
    
End Sub

I've poked around in the library to try to see where this _tag_data event is raised but I can't find it But it does look like the library may be raising this event in the expectation of there being an matching event Sub.

 

[Zeev Goldstein]

Thanks
I'll drill this down and revert, maybe I missed something... ?

But how can we explain the fact that in debug mode is works with no errors, only in release mode?

 

[agraham]

You asked that already. I don't know, the whole thing looks puzzling to me at the moment.

 

[Zeev Goldstein]

?

 

[Zeev Goldstein]

Update:
This was my errot
Found it and working on the fix.

Thank you.
This thread can be ignored.

 

[Johan Schoeman]

You should use the original B4A project and work from there "forwards". Most things are there for a reason such as subs that handle events being raised. If you dont include the event subs and the inline Java hooks it will crash.

 

[Zeev Goldstein]

Dear Johan,
So good to hear from you, indeed I figured it out as I was trying the older code version. Now it works.
I didn't dare to contact you directly as I felt it's on my side.
As said now it works.

But now I have 2 other questions:

1
Can I somehow make it to work only from my app and not to become like as service?

2
Is there a way to dispose the object and run it on demand from my code?

I want basically that the TapCard will work only from my app

Hope you're doing well these days...
Cheers