Adobe Flash ActionScript 3.0 ERROR 1009 When using UILoader

Question

I did a lot of search and can't find the answer, please kindly help me. So I created one flash game called Snake Games and then another Flash which I use UILoader to load the snake game, however when I try to run that Flash game and check whether that flash will load the snake game, I encountered error

TypeError: Error #1009: Cannot access a property or method of a null object reference.

at Main/addFood()

at Main/init()

at Main()

Here's the Main.as script inside the Snake Games http://pastebin.com/raw/Z5ZBtLQn

Please kindly help me.

Thank you.

Answer 1

In your case the source of null error is "Stage is unavailable". You need to alter your snake game constructor to first check stage, then call init() like this:

    public function Main(){
        if (stage) init();
        else addEventListener(Event.ADDED_TO_STAGE,init);
    }
    function init(e:Event=null):void {
        removeEventListener(Event.ADDED_TO_STAGE,init);
        // rest of init() code