null object reference

Forum|Forum|14 years ago
August 20, 2011
3 replies
1120 views

I'm creating a movie clip button and for the out state I have this:

web_btn.addEventListener(MouseEvent.MOUSE_OUT, at_out);

function at_out(event:MouseEvent):void {

web_btn.gotoAndPlay(30-(web_btn.currentFrame-11));

}

It gives me this error when I click the button:

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

at index_fla::web_mc_37/at_out()

What is it?

ActionScript

This topic has been closed for replies.

M

mayaniak11Author

Participating Frequently

Got it, when I used the code snippet I thought it was mouse roll out and I didn't even looked at the code!

So it's ROLL_OUT and not MOUSE_OUT

Ned Murphy

Legend

MOUSE_OUT is as legitimate as ROLL_OUT, so it's hard to see how that fixed anything, especially since it didn't involvre the line of code you said was causing the problem. It could make a difference if you were using 'event.target' in your code though.

M

mayaniak11Author

Participating Frequently

This is the code for the button:

web_btn.buttonMode = true;

web_btn.addEventListener(MouseEvent.ROLL_OVER, at_over);

web_btn.addEventListener(MouseEvent.ROLL_OUT, at_out);

web_btn.addEventListener(MouseEvent.CLICK, at_down);

function at_over(event:MouseEvent):void {

web_btn.gotoAndPlay("over");

}

function at_out(event:MouseEvent):void {

web_btn.gotoAndPlay(15-(web_btn.currentFrame-6));

}

function at_down(event:MouseEvent):void {

web_btn.gotoAndPlay("down");

}

The function "at_out" reverses the roll_over effect!

Now it's all working, but the only issue is the filesize, and I'm trying to make some functions global for other buttons that by the way have diferent sizes.

I'm gonna try classes!

M

mayaniak11Author

Participating Frequently

The error is in this statement:

web_btn.gotoAndPlay(30-(web_btn.currentFrame-11));

The whole thing works fine, all the effects are correct, the only error is that gives me that error!