Uninstall Android Studio completely

These are default locations as of Android Studio 1.0.2 and it is possible to change them by editing ..../android-studio/bin/idea.properties.

1. Delete the android-studio folder;
2. Delete the sdk folder if it is in not inside the android-studio directory;
3. Delete ~/.AndroidStudio, which contains config and system;
4. Delete ~/.android;
5. Delete ~/.local/share/applications/jetbrains-android-studio.desktop, if you created a shortcut using Configure->Create Desktop Entry.

Note: Add on to step#5 above - Sometimes the icon launcher can be in one of the following locations to:

/usr/share/applications
/usr/local/share/applications

If your launcher file is in any of the first two directories, you will require root permissions to remove it.

PPAs
A deeper step of removing Android Studio completely from your Linux Distribution would also include the removal of PPAs related to Android Studio.

In Ubuntu 16.04,

• Go to Software and Updates > Other Software
• Scroll down the list and select to find the ones related to Android-studio
• Click remove and authenticate

This helps stopping updates and the very annoying error message:
The package has not been installed. I can't find the archive for it.

I would suggest to check the installation directory for a readme or an uninstall script but in general: do what you did to install it in reverse order and delete everything you added as a setting or as a file on your system related to that installation.

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Installations done with a tar file are mosttimes uninstalled with the rm command. You go to the directory where you went for this: "Unpack the downloaded Tar file, android-studio-ide--linux.zip, into an appropriate location for your applications" and rm the files and directories created here.

If you did "You may want to add android-studio/bin/ to your PATH environmental" too you will need to undo this alteration by deleting android-studio/bin/ from the file you added this PATH too.

To re-configure you have to delete the following (hidden) folders:

~/.android ~/.AndroidStudio

To show these hidden folders in the file manager press Ctrl+H when in your home directory (aka "~")