java - How to approach Inputprocessing -

i trying build options menu in libgdx using scene2d , im trying find way how approach user input.

i want implement going mainmenu when key on android pressed, not sure how it, since rest of input (pressing button ) handled stage.

if have idea on how approach issue , how handle user input correctly please respond. did not include code since more how approach it, instead of actual problem in code.

thanks, valentin

you need create inputprocessor , implement methods, there no way around because key separate stage. need have way access main menu object inputprocessor; assuming using game , screens, 1 way of doing it:

public class optionsscreen implements screen, inputprocessor {     final mygame game;     public optionsscreen(mygame game) { this.game = game; }     ...     @override     public boolean keyup(int keycode) {         if(keycode == keys.back) {             game.setscreen(game.mainscreen);             return true;         }         return false;     }     ... } 

where game.mainscreen screen of main menu. newly created instance. of course, have enable key before being able catch via gdx.input.setcatchbackkey(true);.

i hope answers question.