How to show tooltip description in Android Studio?

Question

The key in my Eclipse(ADT linux):

'Name': 'Show Tooltip Description'
'Description': 'Displays information for the current caret location in a focused hover'
'Binding' : 'F2'

Any similar key in Android Studio?

Answer 1

The strange thing about Android Studio and tool tips is that Android doesn't call them tool tips. Instead "quick documentation on mouse move." Oh my.

Anyways, for Android Studio 2.1.2 IDE installed on Mac OS X, enable tool tips by:
-"Android Studio" menu
-"Preferences..." menu item
-open "Editor" twirl
-Click on the "General" twirl, not to be confused with twirling open the "General" twirl (this kind of stuff is bad UX design).
-"Other" section
-third field down in the section which is a checkbox labeled "Show quick documentation on mouse move."

Oh BTW, this setting is disabled by default which is very strange.

Answer 2

For Android Studio 3.6.3 IDE installed on macOS, enable tool tips by:

Preferences > Editor > General > Code Completion > Show the documentation popup in 0 ms