I'm a beginner in Android programing, and I'm working with android studio...now i wander what is the best way for installing open sources libraries from gitHub. my question is from organization principles point of view- should i create a new package for every library and put all the library source code as is in that package? should the package be in the source.main.java folder?? (the one that the android studio creates automaticly). sorry for the dumb question...it's just that im taking my first baby steps in a big scale program and i don't want to loose my head in the future because of bad organization practices.
There's no right answer to this question. A few wrong ways to do it, but common sense will guide you.
My advice:
Start by having the source of this open source code checked into your company's source control system somewhere and capable of being built or re-built as needed. Not necessarily in your project, but just getting the code checked in so it can't be lost or confused with the original author's ever evolving changes on GitHub.
As to how you consume it, you have several options.
Build the open source in it's own project (checked into source control, but separate from your main project). Then just take the drop of compiled files (.class, .jar, .lib, etc...) and check that into your main project. This is the most flexible option if you don't think you are ever going to need to change the open source code that often. Has the side benefit of being managed for several projects.
Drop the source code as-is directly into your project. This means you will always be rebuilding the code. This gives the most flexibility with evolving and changing the the code specific to your project needs.
There's probably hybrid solutions of these options as well.
The bottom line is that whatever you use needs to be copied and building in your own system. Because the code you pulled down from GitHub could go away or change significantly at any time.