Android Studio Collapse definitions and methods

Question

How can I collapse all definitions and methods within the Android Studio editor?

Visual Studio has that option on Edit-->Outlining, but I cannot find

Answer 1

If you want turn off all collapsing you need uncheck all fields in the Settings > Editor > General > Code Folding

Also you can use hot keys

ctrl + shift + + — expand code blocks

ctrl + shift + - — collapse code blocks