I am unable to start my Android Studio for Android development on Mac OS (10.10.1 - Yosemite)
Open the application package for Android Studio in finder, and edit the Info.plist file. Change the key JVMversion. Put 1.6+ instead of 1.6*. That worked for me!.
Cheers!
Edited:
While this was necessary in older versions of Android Studio, this is no longer recommended. See the official statement
"Please note: Do not edit Info.plist to pick a different version. That will break not only the application signature, but also future patch updates to your installation."
Antonio Jose's answer is the correct one.
Thanks aried3r!