Bug? Why is my app crashing in 10.2

[MitchBu]

My app is working just fine in B4A 10, but in 10.2, I get the java error below.

I am not versed enough in the Java errors to find out what may be going on.

Is there any way to know where I should look in my B4A code ?

java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/core/content/ContextCompat;
at anywheresoftware.b4a.objects.RuntimePermissions.GetAllSafeDirsExternal(RuntimePermissions.java:134)
at com.bujardet.checkprinter.main._sdpresent(main.java:22241)
at com.bujardet.checkprinter.main$ResumableSub_Register_Click.resume(main.java:7931)
at anywheresoftware.b4a.shell.DebugResumableSub$DelegatableResumableSub.resumeAsUserSub(DebugResumableSub.java:48)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:197)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)
at anywheresoftware.b4a.shell.DebugResumableSub$DelegatableResumableSub.resume(DebugResumableSub.java:43)
at anywheresoftware.b4a.keywords.Common$13.run(Common.java:1704)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:7000)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)
Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.core.content.ContextCompat" on path: DexPathList[[zip file "/data/app/com.bujardet.checkprinter-ExeAsGmAJCpbmsmQOZzglw==/base.apk"],nativeLibraryDirectories=[/data/app/com.bujardet.checkprinter-ExeAsGmAJCpbmsmQOZzglw==/lib/arm, /system/lib, /system/vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
... 21 more

 

[josejad]

Try searching, in the last days some people has reported the same,
Try to update your SDK, follow again the setup instructions

B4X RuntimePermissions Failing completely in 10.2

I just installed 10.2 partly to see if it would solve this problem. But now I get a new error - all RuntimePermissions that I use are failing with the same error. This error occurs on RP.Check(RP.PERMISSION_WRITE_EXTERNAL_STORAGE) RP.Check(RP.PERMISSION_CALL_PHONE) and...

www.b4x.com

B4A v10.2 is available for download

I'm happy to release B4A v10.2. This update adds support for the latest version of Firebase, Crashlytics and Android SDK. B4ASdkManager updated to support latest version of Android SDK command line tools. Firebase libraries updated to support latest version of Firebase SDK. OkHttp updated...

www.b4x.com

 

[MitchBu]

Tracking the error by stepping, I was able to find where it exactly occurs:

Sub SDPresent() As Boolean
    Log("---SDPresent")
    Dim rtp As RuntimePermissions
    Dim s() As String = rtp.GetAllSafeDirsExternal("")
    Return(s.Length > 1)
End Sub

It is triggered by Dim s() As String = rtp.GetAllSafeDirsExternal("")

 

[MitchBu]

Try searching, in the last days some people has reported the same,
Try to update your SDK, follow again the setup instructions

B4X RuntimePermissions Failing completely in 10.2

I just installed 10.2 partly to see if it would solve this problem. But now I get a new error - all RuntimePermissions that I use are failing with the same error. This error occurs on RP.Check(RP.PERMISSION_WRITE_EXTERNAL_STORAGE) RP.Check(RP.PERMISSION_CALL_PHONE) and...

www.b4x.com

B4A v10.2 is available for download

I'm happy to release B4A v10.2. This update adds support for the latest version of Firebase, Crashlytics and Android SDK. B4ASdkManager updated to support latest version of Android SDK command line tools. Firebase libraries updated to support latest version of Firebase SDK. OkHttp updated...

www.b4x.com

Yes, it is the same error with RuntimePermissions. I will try to update the SDK.

Thank you José.

 

[JohnC]

This is a long shot, but maybe try adding this to your manifest:

<application android:requestLegacyExternalStorage="true"  >

 

[MitchBu]

I am growing desperate.

I read Erel's advice at https://www.b4x.com/android/forum/t...ailing-completely-in-10-2.122539/#post-765534 :

You are using a very old Android SDK.
Carefully follow the installation instructions and it will work: https://www.b4x.com/b4a.html

So I renamed my current Android folder to Was-Android, created a new C:\Android folder, and carefully followed exactly the instructions.

Now I get the below error. I have no clue about what I should be doing

Apparently the error could be related to the content of my project, since the default "Hello world" doe not trigger it.

 

[josejad]

What version of android.jar have you set up in path?

• Download B4A Full Version
• Open B4A.
• Choose Tools > Configure Paths.
• Set the path to "javac.exe" if it is empty (C:\java\jdk-11.0.1\bin\javac.exe or C:\Program Files\Java\jdk1.8.0_211\bin\javac.exe).
• Set the path to "android.jar" (C:\Android\platforms\android-30\android.jar).

 

[Erel]

Probably this: Set the path to "android.jar" (Tools - Configure Paths): C:\Android\platforms\android-30\android.jar

 

[MitchBu]

Thank you José, thank you Erel. That was it.

Now, I encounter yet another issue. What could it be ? I don't call print at the launch of the app.

----

Logger connected to: samsung SM-T585
--------- beginning of main
*** Service (starter) Create ***
Starter.Service_Create
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
Samsung device
Air motion: false
Button: false
java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v4/print/PrintHelper;
at anywheresoftware.b4a.objects.PdfDocumentWrapper$Printer.Initialize(PdfDocumentWrapper.java:119)
at com.bujardet.checkprinter.main._activity_create(main.java:941)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at com.bujardet.checkprinter.main.afterFirstLayout(main.java:105)
at com.bujardet.checkprinter.main.access$000(main.java:17)
at com.bujardet.checkprinter.main$WaitForLayout.run(main.java:83)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:7000)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v4.print.PrintHelper" on path: DexPathList[[zip file "/data/app/com.bujardet.checkprinter-CkGWiPyRYLQ-YYHxMlqXCg==/base.apk"],nativeLibraryDirectories=[/data/app/com.bujardet.checkprinter-CkGWiPyRYLQ-YYHxMlqXCg==/lib/arm, /system/lib, /system/vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
... 18 more
** Activity (main) Resume **

 

[Erel]

Errors with android/support are related to the switch from Android Support Library to AndroidX sdk. The solution is to run the jetifier tool or download the printer library again as it was already jetified: https://www.b4x.com/android/forum/threads/printing-and-pdf-creation.76712/#content

 

[MitchBu]

Errors with android/support are related to the switch from Android Support Library to AndroidX sdk. The solution is to run the jetifier tool or download the printer library again as it was already jetified: https://www.b4x.com/android/forum/threads/printing-and-pdf-creation.76712/#content

That was it. Now I can use 10.2

Thank you Erel