IDE: Android Studio for android apps development.

CTRL + ALT + L = REFORMAT CODE in a file.

CTRL + ALT + O = REMOVE unused import.

CTRL + ALT + MAYUS LEFT + O =PROJECT STRUCTURE GRADLE VERSION AND ANDROID GRADDLE PLUGIN VERSION.

LEFT SHIFT + LEFT SHIFT = Searching any file.

CTRL + LEFT SHIFT + F =Searching for any word in any file in project.

SHIFT + 6 = Rename in all occurrences for a variable.

ALT + . = Select import from a suggested list.

extras

ALT + j => Select word occurrences by each word. Its like CTRL + D in sublime text.

ALT+INSERT => Generate code

CTRL + ALT + t = Menu useful options code generate

CTRL + ALT + m = extraer seleccion a metodo