B4J Question B4X (Barcode App runs on B4A and not B4J) - Solved

[LGS]

Hello everyone.
I have a development in B4X that runs without problem in B4A, but not in B4J.
Initially sub drawEAN13 returned (Bitmap), but since B4J doesn't recognize Bitmap, I had to change it to B4XBitmap and with that change it also runs without problem in B4A.

Sub drawEAN13 (data As String, FondoBarras As Int,Barras As Int) As B4XBitmap 'Bitmap

I comment this because in line java, the drawEAN13 procedure is defined as Bitmap
public Bitmap drawEAN13
So it returns a Bitmap
I don't know if this is the source of the error when compiling in B4J

#AdditionalJar: core-3.2.1 is used in B4A and B4J
#AdditionalJar: C:\Android\platforms\android-33\android.jar is used in B4J

Waiting for debugger to connect...
Program started.
Call B4XPages.GetManager.LogEvents = True to enable logging B4XPages events.
Error occurred on line: 17 (EAN13)
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at anywheresoftware.b4j.object.JavaObject.RunMethod(JavaObject.java:132)
    at b4j.example.ean13._drawean13(ean13.java:84)
    at b4j.example.b4xmainpage._creacodigobarra(b4xmainpage.java:162)
    at b4j.example.b4xmainpage._button1_click(b4xmainpage.java:79)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:629)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:234)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:167)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:111)
    at anywheresoftware.b4a.shell.ShellBA.raiseEvent2(ShellBA.java:100)
    at anywheresoftware.b4a.BA$1.run(BA.java:236)
    at com.sun.javafx.application.PlatformImpl.lambda$null$177(PlatformImpl.java:295)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$178(PlatformImpl.java:294)
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$152(WinApplication.java:177)
    at java.lang.Thread.run(Thread.java:748)
[B]Caused by: java.lang.RuntimeException: Stub![/B]
    at android.graphics.Bitmap.createBitmap(Bitmap.java:63)
    at b4j.example.ean13.encodeAsBitmap(ean13.java:123)
    at b4j.example.ean13.drawEAN13(ean13.java:109)
    ... 29 more

I appreciate all the support and suggestions.
I attach sample code

 

[MarcoRome]

i dont think tht android.jar can run on windows systems.
Anyway do you see:

Barcodes - QR Codes, PDF417, Aztec Codes, Code11, Code39, Code93, EAN8, EAN13, and Code128

This is my first attempt at B4J. Have not tried to do anything special to the layout etc. The aim was to get back the correct binary strings to draw Code11, Code39, Code93, EAN8 and EAN13 barcodes with. All the code are in the main module as well as modules for each of the types of barcodes. The...

www.b4x.com

 

[GMan]

Also have a look at this - B4J & B4A
https://www.b4x.com/android/forum/threads/okapibarcode-zint.146910/#post-931160

 

[LGS]

Thanks for the support.

Initially this code was just B4A, then I made a few small changes to try to reuse the code to B4X.
But when compiling in B4J, I got the following error:
src\b4j\example\ean13.java:4: error: package android.graphics does not exist
import android.graphics.Bitmap;

Then in the forum I found the following:
https://www.b4x.com/android/forum/threads/how-do-i-import-android-graphics-bitmap.72656/post-462539

And following that suggestion I am trying to add the android.jar library like this:
#AdditionalJar: C:\Android\platforms\android-33\android.jar

I don't know if it is the correct way to add the library and also if it is possible to use it in B4J.

I'm just trying to adapt the code to B4X (if possible)

Thanks for the contributions ?

 

[Johan Schoeman]

import android.graphics.Bitmap;

Any class imported from android will not work in B4J. There are examples in the B4J forum using the ZXING core classes that can also be used in B4J as none of those classes depend on android classes.

 

[LGS]

Hello Mr Johan.
Ok, understood.
I will have to do independent development for B4J.
Thanks for your support.

 

[LGS]

Mr. Johan.
Following one of your tutorials I was able to create the barcode (EAN13) as I had developed it in B4A.
However I still haven't been able to find the module for (EAN14), which I also need to recreate in B4J.

I would really appreciate if you can help me or direct me to find this module.

Thanks in advance for your customary support. ?

 

[LGS]

B4J - EAN13

 

[Johan Schoeman]

B4J - EAN13
View attachment 140833

Your can try this for EAN 13 and ITF 14

OkapiBarcode (ZINT)

It is based on this Github project. Have stripped it bare and compiled the code to a new Jar (OkapiJHS.jar) so that it will only handle DataMatrix barcodes (a pm request that I have done for a member of the forum). The library brings back X and Y positions as well as width and height of the...

www.b4x.com

 

[LGS]

Thank you very much Mr. Johan.
As always, his support is already customary.
The community is very lucky to have people like you, willing to help at all times.
It works like a charm ?

Blessings ?