Android Question 'JavaObject.RunMethod' - NoClassDefFoundError

[BjoernB]

Hi everyone!

we're running B4A on 2 PCs in 2 different Versions -
the older one, 13.10 using Android SDK 34
the newer one, 13.40 using Android SDK 36

on the older one, everything works pretty fine - the new one keeps getting an Error in the following code:

Public Sub Scan (Formats As List) As ResumableSub
    Dim builder As JavaObject
    builder.InitializeNewInstance("com/google/mlkit/vision/codescanner/GmsBarcodeScannerOptions.Builder".Replace("/", "."), Null)
    Dim f(Formats.Size - 1) As Int
    For i = 1 To Formats.Size - 1
        f(i - 1) = Formats.Get(i)
    Next
    builder.RunMethod("setBarcodeFormats", Array(Formats.Get(0), f))
'    builder.RunMethod("enableAutoZoom", Null)
    Dim options As JavaObject = builder.RunMethod("build", Null)
    Dim scanning As JavaObject
    Dim ctxt As JavaObject
    ctxt.InitializeContext
    Dim CamScan1 As JavaObject = scanning.InitializeStatic("com/google/mlkit/vision/codescanner/GmsBarcodeScanning".Replace("/", ".")).RunMethod("getClient", Array(ctxt, options))
    Dim o As JavaObject = CamScan1.RunMethod("startScan", Null)
    Do While o.RunMethod("isComplete", Null).As(Boolean) = False
        Sleep(50)
    Loop
    Dim res As ScannerResult
    res.Initialize
    If o.RunMethod("isSuccessful", Null) Then
        res.Success = True
        res.Barcode = o.RunMethod("getResult", Null)
        res.Value = res.Barcode.RunMethod("getRawValue", Null)
    End If
    Return res
End Sub

this is an example code from b4a itself, it's not from us.

CamScan1.RunMethod(startScan", Null) keeps crashing with the Error java.lang.NoClassDefFoundError
Full Error Code will be posted below.

do you have any Ideas what we can do to fix this?
by now, we're compiling the apk on the other PC, the old version, but that's just a Workaround.


Full Error:

*** Receiver (httputils2service) Receive ***
** Activity (login) Pause, UserClosed = true **
** Activity (main) Resume **
Abschn All get ok
** Activity (main) Pause, UserClosed = false **
java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/arch/core/executor/ArchTaskExecutor;
at androidx.lifecycle.LifecycleRegistry_androidKt.isMainThread(LifecycleRegistry.android.kt:23)
at androidx.lifecycle.LifecycleRegistry.enforceMainThreadIfNeeded(LifecycleRegistry.jvm.kt:297)
at androidx.lifecycle.LifecycleRegistry.addObserver(LifecycleRegistry.jvm.kt:172)
at androidx.activity.ComponentActivity.<init>(ComponentActivity.kt:256)
at com.google.mlkit.vision.codescanner.internal.GmsBarcodeScanningDelegateActivity.<init>(com.google.android.gmslay-services-code-scanner@@16.1.0:1)
at java.lang.Class.newInstance(Native Method)
at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:95)
at android.app.Instrumentation.newActivity(Instrumentation.java:1328)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4038)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4325)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:101)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2574)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8762)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:604)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1067)
Caused by: java.lang.ClassNotFoundException: androidx.arch.core.executor.ArchTaskExecutor
... 21 more

Thanks and greetings,
BjoernB

 

[teddybear]

Try adding these lines to main module:

#AdditionalJar: kotlin-stdlib-2.1.0
#AdditionalJar: androidx.arch.core:core-common
#AdditionalJar: androidx.arch.core:core-runtime

 

[valerioup]

#AdditionalJar: com.google.android.gms:play-services-code-scanner
#AdditionalJar: com.google.android.gms:play-services-base

#AdditionalJar: androidx.lifecycle:lifecycle-runtime
#AdditionalJar: androidx.lifecycle:lifecycle-common
#AdditionalJar: androidx.activity:activity
#Jaraggiuntivo: androidx.arch.core:core-runtime

I had the same problem, if you add this it works for you.

 

[BjoernB]

#AdditionalJar: kotlin-stdlib-2.1.0
#AdditionalJar: androidx.arch.core:core-common
#AdditionalJar: androidx.arch.core:core-runtime

this one unfortunately didn't work

#AdditionalJar: com.google.android.gms:play-services-code-scanner
#AdditionalJar: com.google.android.gms:play-services-base

#AdditionalJar: androidx.lifecycle:lifecycle-runtime
#AdditionalJar: androidx.lifecycle:lifecycle-common
#AdditionalJar: androidx.activity:activity
#Jaraggiuntivo: androidx.arch.core:core-runtime

but after replacing "#Jaraggiuntivo" with "#AdditionalJar", this one did! Thank you!