All keys are given for windows.
CTRL + F to search for keywords in a single file
You can do it like Find XML Usage | ALT + F7 after selecting XML layout

There is another way (not sure if you will like it). Try removing xml and it will not be deleted the first time. It will show you that all of its uses will be asked to confirm the deletion. You can see all the customs on the terminal, so you can find all of them.

click the browse button to display them all
For any shortcut, File â Settings â Keymap â (you can even select the Eclipse / Visual Studio shortcut types in android studio)
Here are some default shortcuts for Windows
Code Format | CTRL + ALT + L
Add Unrealized Methods | CTRL + I
Show logcat | ALT + 6
Build | CTRL + F9
Build and Run | CTRL + F10
Find | CTRL + F
Find in project | CTRL + SHIFT + F
Find and replace | CTRL + R
Find and replace in the project | CTRL + SHIFT + R
Override Methods | CTRL + O
Show project | ALT + 1
Hide project - logcat | SHIFT + ESC
Collapse all | CTRL + SHIFT + NumPad +
View Debugging Points | CTRL + SHIFT + F8
Expand all | CTRL + SHIFT + NumPad -
Open Settings | ALT + s
Select Target (open the current file in the Project view) | ALT + F1 â ENTER
Worldwide Search | SHIFT â SHIFT (double shift)
Code | Environment | CTRL â ALT + T
Create method form of selected code | ALT + CTRL