How to go back to the previous screen instead of exiting the app on back key pressed

Question

In my Android app when back key pressed the app closed. I want it to go back to the previous screen instead of exiting the app.

While I am using AS3, flash CS5.5.

So what is the code that does that.

Thanks for help.

Answer 1

Intercept Hardware key, and perform your inner logic:

stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown, false, 0, true);

function onKeyDown(e: KeyboardEvent):void{
    //Back is 94, for Menu key, use 95
    if(e.keyCode == 94){
        //Stop default behaviour
        e.preventDefault();
        //perform your logic
    }
}