Android Tutorial [java] Creating libraries for B4A

[Avansys]

See the guide I pointed you to.
Guide - Using onActivityResult

There is already a PayPal library available.

Yeah, I know, but this library have some errors, so I want to try make a new library

 

[Avansys]

And respect of read the link, I read it, but I didn't understand it
Is there an example easier than the last example?
Or maybe, Is there other form for do it?

 

[Erel]

There isn't any other tutorial. Which error did you encounter?

 

[steynpjm]

Now that we have B4J, how does it influence this thread? Is Eclipse still needed?

 

[Erel]

You still need to write Java code in order to build a library (either for B4J or B4A).

You can use SLC tool to build the Java code to the XML / Jar files. This is easier than configuring Eclipse to do it.

 

[Avansys]

I found my error, I didn't add the paypal .jar =), but now I get this problem:

java.lang.NoClassDefFoundError: com.richard.avansys.APayPal
at com.avansys.testultracable.ventanapagos._globals(ventanapagos.java:461)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
at com.avansys.testultracable.ventanapagos.initializeGlobals(ventanapagos.java:230)
at com.avansys.testultracable.ventanapagos.afterFirstLayout(ventanapagos.java:86)
at com.avansys.testultracable.ventanapagos.access$100(ventanapagos.java:16)
at com.avansys.testultracable.ventanapagos$WaitForLayout.run(ventanapagos.java:74)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3824)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
at dalvik.system.NativeStart.main(Native Method)

I followed the Youtube instructions, but I get this problem. In my test library I have a class that does a simple sum.

 

[Erel]

This error means that the class file is missing from the jar. See my answer in the PayPal library thread. The tablets issue should have been resolved.

 

[Erel]

There is a missing step in the video. See the first post.

 

[msa]

Tanks

 

[kepler]

Hello,

I've tryed the simple method showned, but I was only able to retrieve the xml file, not the jar....

What am I doing wrong?

Kind regards,

Kepler

 

[Alberto Iglesias]

Erel,

Can you put the your autohotkey script that creates the jar file and copies it to the libraries folder?

I need to use the Eclipse right now and this will be very useful.

Thanks

Alberto Iglesias

 

[Erel]

The simplest way it with SLC. It can be run from the command line.

Create a batch file that builds the project and then copy the files to the libraries folder.

 

[Alberto Iglesias]

I normally use the SLC, but with with library I need to use the .so files embedded in this library, I don´t know if with SLC is it possible, then I take a look in eclipse way.

What you recommend with this scenario?

B4A Library + libxxxxxx.so
How to compile with SLC?

And where is .so file is saved? The structure for that?

Thanks​

 

[Erel]

SLC supports so files.

Start a new thread for this and I'll post the folders structure.

 

[Alberto Iglesias]

Created..

https://www.b4x.com/android/forum/threads/slc-tool-and-structures.58467/

Please, if you describe this structures, a lot of developers thank you!!!

Thanks

 

[Alberto Iglesias]

Someone knows how to embedded a .jar file inside a library?

I mean, to create a library developed in Java with dependence on another, but at the end of compilation only requires a single .jar and .xml that need B4A

Example:

I create a MyLib.xml and MyLib.jar

But the MyLib.jar depends on Third.jar.


I don´t want to send separately a different library, want you to be embedded in MyLib.jar.

it's possible?

Thanks

 

[DonManfred]

it's possible?

as far as i know no.

 

[Erel]

Note that you should have started a new thread for this question.

You can always merge libraries. jar files are just zip files.

 

[cimperia]

I think it's possible. You use Jar to extract both jars and then Jar again to combine then in one Jar.

jar -xvf MyLib.jar
jar -xvf Third.jar

rm MyLib.jar Third.jar

jar -cvf MyLib.jar

 

[Dany Rocha]

I need help to create a library to work with this TPS-586 device.
I want to use to create B4a app to work with thermal printer and RFID card reading.

Erel I need your help.

Link Attached this whole sdk documentation.
https://www.sendspace.com/file/g1mher

Link Produtc
http://en.telpo.com/product2-612-617-2407-2.html