AIR on Android: Handling the BACK and MENU Hardware Buttons

Spent a lot of time trying to get this down. The key [no pun intended] in getting this to work is capturing the KEY_DOWN and KEY_UP events and calling preventDefault() and stopImmediatePropagation() on both Events. Code that needs to be executed in place of the default, should be placed in the KEY_UP event.

This was tested on MT4G, Froyo, AIR 2.5.

stage.addEventListener(KeyboardEvent.KEY_DOWN, handleKeyDown);
stage.addEventListener(KeyboardEvent.KEY_UP, handleKeyUp);

function handleKeyDown(event:KeyboardEvent):void
{
       switch(event.keyCode)
       {
              case Keyboard.BACK:
                     event.preventDefault();
                     event.stopImmediatePropagation();
                     break;
              case Keyboard.MENU:
                     event.preventDefault();
                     event.stopImmediatePropagation();
                     break;
              default:
                     break;
       }
}

function handleKeyUp(event:KeyboardEvent):void
{
       switch(event.keyCode)
       {
              case Keyboard.BACK:
                     event.preventDefault();
                     event.stopImmediatePropagation();
                     break;
              case Keyboard.MENU:
                     event.preventDefault();
                     event.stopImmediatePropagation();
                     break;
              default:
                     break;
       }
}

Cheers!

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