While following How to install Android Studio on Ubuntu? and Complete Installation Guide for Android SDK / ADT Bundle on Ubuntu to install Android-studio as a solution for Android emulator independent of Virtual Box/VM-ware capability there is a proble that the file we download from Developer.Android.com as sdk-tools-linux-3859397.zip does not contain the add-ons and platforms and I can find just the tools folder .
Below image is from Complete Installation Guide for Android SDK / ADT Bundle on Ubuntu that shows the files used to be in downloading folder.
So when I try to run Android studio I get this message that No Android SDK is found.
In next step installing/updating components, it says that Android SDK is installed.
Next step says that Android SDK is up to date but SDK tools directory is missing.
And nothing works properly. ! Please specify a Android SDK Location.

Trying SDK location for android studio on ubuntu 14.10's solution, I couldn't find any "SDK Readme.txt"