CODEWITHSUNDEEP
androidluacoronasdk
Scholastic_Neko
Scholastic_Neko

Reputation: 39

How to use "back" hardware button in Corona?

I want to cause a pause-menu scene when I touch back button located on the bottom panel (with "home", "menu") but I don't understand how to do it. This can be implemented in Corona SDK?

Upvotes: 1

Views: 1067

Answers (1)

GoojajiGreg
GoojajiGreg

Reputation: 1183

You add a listener for key events to the Runtime in the scenes that should respond to key events. This is essential for the back key; without it, the system will back out of (i.e. exit) the app. Assuming a scene object, you could do:

function scene:key(event)

    if ( event.keyName == "back" ) then

          -- handle the back key press however you choose
    end
end

Runtime:addEventListener( "key", scene )

For more information about key events, see the Corona documentation.

As for the “pause menu scene”, you probably want to use an overlay. From the documentation on composer.showOverlay():

This function loads an overlay scene above the currently active scene (the parent scene), leaving the parent scene intact. When an overlay is shown, an overlay-specific scene event parameter, event.parent, will be dispatched to the overlay scene.

This parameter provides you with a reference to the parent scene object so that you may call functions/methods within it.

Upvotes: 3

Related Questions