Go to class CTRL + N
Go to file CTRL + Shift + N
Navigate open tabs ALT + Left-Arrow; ALT + Right-Arrow
Look up recent files CTRL + E
Go to line CTRL + G
Navigate to last edit location CTRL + SHIFT + BACKSPACE
Go to declaration CTRL + B
Go to implementation CTRL + ALT + B
Go to source F4
Go to super Class CTRL + U
Show Call hierarchy CTRL + ALT + H
Search in path/project CTRL + SHIFT + F
Programming Shortcuts:-
Reformat code CTRL + ALT + L
Optimize imports CTRL + ALT + O
Code Completion CTRL + SPACE
Issue quick fix ALT + ENTER
Surround code block CTRL + ALT + T
Rename and Refractor Shift + F6
Line Comment or Uncomment CTRL + /
Block Comment or Uncomment CTRL + SHIFT + /
Go to previous/next method ALT + UP/DOWN
Show parameters for method CTRL + P
Quick documentation lookup CTRL + Q
Delete a line CTRL + Y
View declaration in layout CTRL + B
To find Usage of selected Text ALT + F7 or goto Edit -> Find -> Find Usages
To check unused res files in android studio - Control + Alt + Shift + i and type "Unused resources"