Function to turn local variable into class variable

Question

How to add these two functions to android studio, to turn a existing (not accessible) variable into a private/public? The screenshot is faked and not real, but it is the aim of my question.

To turn a local variable into private/public I have to do the following steps:
- Cut [variable-class] [variable-name]
- Write [private/public]
- Change cursor position to class-head
- Paste [variable-class] [variable-name]
- Copy [variable-name]
- Change cursor position to class-method
- Paste [variable-name]

Answer 1

Ctrl+Alt+F will extract your local variable into the class field.
To learn other available refactorings, you can read the Intellij Idea Reference Card.