Android Question Decompile lib

rename test.apk to test.zip and extract the java source

That is not how to use the libraries.
So in that rar for example you have the official facebook sdk (also available on their website)
It is a fairly large library. In order to use it, you need a java wrapper. This can be as simple as exposing all the java methods/classes using the wrapper jar/xml or can be more complicated.

@Douglas Farias
Your B4A-Knowledge is like simple "copy-and-paste-coding". In fact: There is NULL knowledge!
I AM sure your are not able to write such a wrapper (i´m not able to do too). Even if it would be as simple as exposing all the java methods/classes

You need Java-Knowledge to write a wrapper. Doesnt matter if it is the simpe or the complicated version...
Without knowledge it is nearly impossible to write such a wrapper.

You asked a FEW times for such a wrapper. Seems that noone WANT or CAN or have the time to do that for you.

I suggest to wait till someone releases this wrapper OR you give out a Job-offer for it and pay for the work.

you do not understand, I'm not really able to do by not having knowledge, in my post I asked if anyone could do.

these libs in. rar are the libs lib scringo b4a
have you tested the scringo?

with it you can log in with twitter or facebook using the official apps in b4a
http://www.b4x.com/android/forum/threads/scringo-for-basic4android-is-live.29068/page-4

my post was as an idea or attempt

why we scringo with facebook and twitter working perfectly in b4a would not be easier for you developers get this lib and make it an official lib forum?

Scringo Lib working at b4a with facebook oficial and twitter 100%
http://www.b4x.com/android/forum/threads/scringo-for-basic4android-is-live.29068/#content

image
http://www.b4x.com/android/forum/attachments/buildroid_vbox86p_4-png.17794/