We have been digging, learning Android Studio from mid of 2015 and it's still an awesome journey. The IDE is somewhat on par with Xcode. However the emulator is still sucks, you need to have an actual device to do development.
We are currently make an app using drawer, with recycler view.
I decide to open source the app.
You may find at github https://github.com/irekasoft/DrawerMenu-iRekaSoft