I\'m new to Android development and the development tools around it. I have checked out a project from svn using TortoiseSVN client (can\'t manage to do it from within Andro
Saw your problems.
Solutions:
First Download Subversion 1.8.13 ( 1.8 ) client Download link (https://subversion.apache.org/packages.html) at the time of this post the android studio version is less than 1.4 in my case 1.3.2 so you must avoid the issues here subversion command line client version is too old so just download the 1.8 preferably.

Then unzipped in a folder. There will have one folder "bin".
Then
Go to settings - > Version control -> Subversion
Copy the url of your downloaded svn.exe that is in bin folder that you have downloaded.
follow the picture:

Don't forget to give the end name like svn.exe last as per image.
Apply -> Ok
Restart your android studio now.
Happy Coding!