I am not sure if there has been any bug fixes since this was asked, but I am using the current structure for a project in Android Studio 0.5.2:
root-module
|--.idea
|--app
|----build
|----src
|------main
|--------assets
|----------SomeFont.ttc
|----------AnotherFont.otf
|--------java
|----------source code here
|--------res
|------AndroidManifest.xml
|----build.gradle
And then obtain it by calling
Typeface.createFromAsset(mContext.getResources().getAssets(), "SomeFont.ttc");
Word of caution though, there is a bug (https://code.google.com/p/android/issues/detail?id=9904) that prevents typefaces from being garbage collected properly. Use a singleton!