This question has been asked before for WINDOWS, but I can't find an answer for Linux.
My AVD Manager is greyed out (button) on the Android Studio bar. The 'Android' menu is also missing from Tools. Thus, I can't run an app on an emulator.
My downloaded SDK for 17 is in: ~/android-sdk/, but the package manager that downloads APIs from Google has put 22 in ~/Android/Sdk/. Both have the tools directory, and both can launch the AVD Manager from the command line.
But, I can't figure out how to make these show up in Android Studio so I can compile, launch, and test APKs against different versions on the emulator.
I feel like there is an environment variable that is not set, but can't seem to figure out which one it is.