CODEWITHSUNDEEP
actionscript-3
Butterflycode
Butterflycode

Reputation: 809

as3 creating and deleting children

I want to make it when a button is hit it creates a child and then when the child is hit it deletes the child....this works but then when I click the button again the child doesn't get created again.

How can I do this? Here is my code:

var bikeride:MovieClip = new ridingbike();
ridinb.addEventListener(MouseEvent.CLICK, openbike); 
function openbike(evt:MouseEvent):void { 

addChild(bikeride);
} 


bikeride.addEventListener(MouseEvent.CLICK, closebike); 
function closebike(evt:MouseEvent):void { 
    bikeride.removeChildAt(0);
}

Upvotes: 0

Views: 97

Answers (2)

Marty
Marty

Reputation: 39456

Adding to Florent's answer you may want to also remove the event listeners and check if bikeride has a parent before trying to work with it. This avoids null object reference errors and to ensure that bikeride gets garbage collected (removed from memory, freeing resources).

bikeride.addEventListener(MouseEvent.CLICK, closebike); 

function closebike(evt:MouseEvent):void
{
    if(bikeride.parent)
    {
        bikeride.parent.removeChild(bikeride);
    }

    bikeride.removeEventListener(MouseEvent.CLICK, closebike);
}

It is really important to remove event listeners if you're expecting your object to get properly 'deleted'.

Upvotes: 1

Florent
Florent

Reputation: 12420

You can remove the child using:

removeChild(bikeride);;

If you don't store the bikeride instance you can do this:

function closebike(evt:MouseEvent):void { 
    var bike:DisplayObject = DisplayObject(evt.target);
    bike.parent.removeChild(bike);
}

Upvotes: 2

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