How to remove an event listener from a different class?

Question

I have 2 class of code, A and BIn class B there is a public static function addEL like thispublic static function addEL (targetObject:Object):void{     //add click event listener on btn_B     targetObject.btn_B.addEventListener(MouseEvent.CLICK, btnB_doSomething);     function btnB_doSomething(event:MouseEvent):void     {          //do something     }}This addEL function is called in class A right after I add a movieClip instance of Class B onto the stage.What I want to do is to use removeEventListener() to remove that handler from class A by pressing a keyIt works fine if I use removeEventListener()  in that addEL function by creating a click event listener in addELbut in this way, I couldn't find a way to trigger it by pressing a key since that function only runs one time.I'm not very familiar with the effective range of the function removeEventlistener(), what is the range limit of it or how does it work?How exactly should I do if I want to remove the handler in a different Class, is it even possible to achieve?I tried to find answer on all different places, but couldn't find a similar situation.

kglad · Accepted Answer

it works like every property and method in a class: add a static function to remove the event listener.

but if you have any more questions about your code, you should explain why you're using static functions because that does not look like the appropriate use of a static function.

typically, you would use:

public function addEL(obj:InteractiveObject):void{
obj.addEventListener(MouseEvent.CLICK,f);

}

public function removeEL(obj;InteractivateObject):void{

obj.removeEventListener(MouseEvent.CLICK,f);

}

private function f(e:MouseEvent):void{

//

}

henryl53269518 · Answer

True, I first use "static" only for some var I need to call anytime to prevent not finding it, then it became a bad habit.

I get it now, it's a bad practice to use a static function only to do some action such as game update.

Maybe I will try not to use "static" for the caller function, thank you.

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