remove this child and add new child AS3 - actionscript-3

Question

i've been stuck on this for quite a while,
i'm working with a Main.as and LivrmScreen.as
and basically LivrmScreen.as is a game screen with other movieclip actions going on...
then i have a button on LivrmScreen that i wish to remove LivrmScreen itself and show homeScreen (all the homeScreen functions are in Main.as)
var homeScreen: HomeScreen;
public function LivrmScreen() {
backhomeBtn.addEventListener(MouseEvent.CLICK, onBackhomeBtnClicked);
}
function onBackhomeBtnClicked(evt:MouseEvent) {
homeScreen = new HomeScreen();
stage.addChild(homeScreen);
parent.removeChild(this);
}
this is what i have right now,
i added parent.removeChild because it won't remove when it is just removeChild ...
and because of that i added stage.addChild so that home screen will show up properly.
but then when homeScreen shows up the button's don't actually work ... so its just showing a dead movieclip. why is that???
i also tried to put the onBackhomeBtnClicked function in main.as thinking so that all the homeScreen functions are there and maybe the buttons will work... but in that case i cant even get the screens to remove and add properly

Answer 1

There's a flaw in your code logics. I don't want to go too deep into the OOP principles or tell you to use frameworks that takes care of these kind of things.
Here's a cheap and fast way out:
in Main.as
private function goToLivrScreen(e:Event = null):void
{
var livrScreen:LivrScreen = new LivrScreen();
livrScreen.addEventListener("onClose", onLivrScreenClose);
addChild(livrScreen);
}
private function onLivrScreenClose(e:Event = null):void
{
removeChild(e.currentTarget as DisplayObject);
// add code to show main menu or whatever you wanted
}
in LivrScreen.as
backhomeBtn.addEventListener(MouseEvent.CLICK, onBackhomeBtnClicked);
and handler
private function onBackhomeBtnClicked(evt:MouseEvent):void
{
// remove all listeners from all object that you have so your LivrScreen could be garbage collected
// when done just dispatch the Event that Main.as is waiting for
dispatchEvent(new Event("onClose"));
}
This is a pretty crude way to do it and there can be many improvements, but it will make your code a little cleaner and hopefully, more scalable in case you want to add new screen or change some implementation.