In Flash CS5 I have a button with an instance name "btn", which is made up of movie clips with instance names "mv1" and "mv2".
The question is: can I use gotoAndStop or something similar on the movie clips inside the button from the stage in which the button is instantiated. In pseudocode:
btn.mv1.gotoAndStop(3);
btn.mv2.gotoAndStop(7);
This is likely to be a very basic question, but the one I could not find any information on in the last half an hour.
Probably yes, if btn happens to be a MovieClip. For (almost?) any other display class (DisplayObject, DisplayObjectContainer, Sprite etc) this will fail in compilation.
If your compiler refuses to run your code, try this:
var mv1:MovieClip = btn.getChildByName("mv1") as MovieClip;
mv1.gotoAndStop(3);
Yes you can.
btn.mv1.gotoAndStop(3); will work perfectly fine.
Related
I can't attach a simple event handler to a lousy movie clip. Not a single tutorial worked for me and I followed them carefully. Over an hour wasted for nothing... again! Here's what I did:
Layer1: created a symbol(movie clip). Added a rectangle. Draged it onto the layer. Added a name 'obj' in the Properties window. Exported it for ActionScript.
Layer2: Open Action Panel and wrote the following:
obj.addEventListener(MouseEvent.CLICK, move);
function move(event:MouseEvent):void {
obj.x = 200;
obj.y = 200;
}
I don't know what I might be overlooking. I tried with the import flash.events.Event; at the top. Although it wasn't present in the tutorials I've watched(on youtube).
P.S. Needless to say, I'm just starting with ActionScript 3.0 but I am reading about the basics on adobe.com
I think I got it. Adding a name for the movie clip symbol is one thing. But when we drag it onto the stage, then we have to click it. And THEN, in the properties tab of the object on the scene, we give it a (class) name. So that ActionScript can see and use it. Right-clicking on the movie clip in the Library tab and selecting Properties is NOT the properties we're looking for.
Edit: Thanks, akmozo. I just found that out. Took me long enough!
Edit2: Just wanted to point out something - when I save a project in Flash CS4 which has an event handler. The handler didn't work. The code itself, that is. I tried the same project in CS3 and it worked fine. So part of the problem was the program itself(Flash CS4).
I'm banging my head on what seems like a simple as3 problem. I have a flash chart that contains a series of buttons that go to different parts of the timeline on Roll_over.
so for example - the "Market maneuvers" button looks like this
marketManeuversButton.addEventListener(MouseEvent.ROLL_OVER, marketManeuversButtonReaction)
and the function it calls looks like this
function marketManeuversButtonReaction (event:MouseEvent):void{ gotoAndStop('18'); }
The problem is, when I mouseover that button (and many others), it goes to frame '18' and then throws this error:
Error #1009 Cannot access a property or method of a null object
reference
here is my flash file
Any help would be appreciated. Thanks.
When you change frame, flash recreated all objects in frame, and you loose all your data.
Yes, it's simple AS3 problem, just don't use a scene frames at all. Program all in classes, don't use any frames to code any logic except stop(), gotoAndStop(), gotoAndPlay().
In your problem, put all scene in movieclip, exclude control buttons from it to another movieclip and control scene movie clip with control movieclip >____<. It pegleg. Next time just do it right, don't use scene frames.
I have the following piece of code:
var Note1:MovieClip = mcNote1;
//Init
Note1.stop();
The instance name and everything is correct but yet it doesn't stop the movieclip??
Here a short overview of my flash file
You could try a couple things. You could edit your movie clip and insert a Keyframe and add "stop();" to frame 1 of your movieclip. Or you could try "Note1.gotoAndStop(1);" in your main function.
I thought I was being slick by having movieclips that I export for actionscript and then addChild later. I've made this one movieclip that loads html text through as, and it works fine when I drag it to the stage; but if I do
var trackListingBox:trackListingScreen = new trackListingScreen();
addChild(trackListingBox);
it either doesn't run the actionscript, or it's somehow broken. Can children not run their own action script?
Maybe try adding some code to your MovieClip which will fire when the movie clip is added to the stage. Something like this:
this.addEventListener(Event.ADDED_TO_STAGE,onAddedToStage);
function onAddedToStage(e:Event):void {
functionWhichLoadsHTML();
}
They can "run their own actionscript" fine. There's probably a bug in your code in the child clip, but I can't give any advice on it without actually seeing the code.
the problem was that the actionscript was loading before the items it was referring to, thereby giving me errors that items were not found.
I'm using the Flex 3 SDK and the free FlashDevelop IDE.
As I don't have FlexBuilder or Flash CS4 Professional I cannot make MovieClips graphically.
So instead I want to create a simple MovieClip using code or MXML. For example, lets say I want to create a MovieClip with 3 frames, and load a bitmap into each frame to create a simple animation.
Is this possible? I've had a good google around and the only examples I can find are of loading existing MovieClips and adding them to a stage.
You can create a movieclip with this simple code:
var mc:MovieClip = new MovieClip();
stage.addChild(mc);
That is of cause just and empty movieclip, you can draw on it with graphics property (see here).
As far as I know there is no way to create frame with actionscript. Though there might be some undocumented methods. There are some functions that do not appear in the documentation (like the addFrameScript method).
I would say the best way (if you absolutly can not use the Flash CS4), would be to have a series of Loader objects, and the hide and show them on every in sequence.
Just put them in an array and listen for the enterFrame event.
You can load in the bitmaps in the Loader objects.
If you use the links and checkout the examples in the documentation, I think you should be able to figure it out.
As far as I've seen, there is no easy way to create a MovieClip in Flex which behaves in a way one might see as comparable to Flash's implementation MovieClip. But I don't think you really want a MovieClip to begin with. Flex does not really play well with non-flex objects. Yes, it is possible to add something to a UIComponent, but you are much better off working withing the Flex framework than doing workarounds.
I would use the mx:Image tag to load your images. It is generally the cleanest way to load an image into Flex. It will let you embed the object into the SWF at compile time, which means that you will not have to point to an outside file. I will caution about having too many embedded graphics -- that will kill your download time and possibly your performance.
If you are only interested in having an animation move or re-size, then I would use the Move and Resize objects which are native Flex Tweens.
Your best option might be to extend the UIComponent class, add a MovieClip as a child-component, and apply the settings from MXML via proxy. e.g.,
public function set movieFrames(value:Array):void {
for each(var b:Bitmap in value) {
//add bitmap to _movieclip object.
}
}
You want a Sprite not a MovieClip. And use time instead of frames. There's a Timer class and a getTimer() function. Use them.
create a class that extends/implements Sprite.
Add a Loader class.
Google it exactly how it's done. (flashtuts.com or sth like that).