I have a button in flash and I want to generate an automatic color for my square.
I have this function
private function btnClick(event:MouseEvent):void
{
var mycolor :ColorTransform = new ColorTransform();
mycolor.color = (Math.random() * 0xFFFFFF);
parcare.transform.colorTranform = mycolor;
}
I get this error
: 4 Error: Access of undefined property parcare. parcare.transform.colorTranform = mycolor;
Do you know how can I solve it?
Thank you!
this is a scope problem, the random colour generating is fine
the onClick function is outside of the scope of the rest of your class. You need to find a way for the function to know what the variable parcare is.
There is no easy way of fixing it for you without seeing more code.
look a at this question for more info To pass a parameter to event listener in AS3 the simple way... does it exist?
To create a random hex color is:
'#'+Math.floor(Math.random()*16777215).toString(16);
And As A function is:
function random() {
var a = '#'+Math.floor(Math.random()*16777215).toString(16);
return a;
}
Related
I have this annoying issue that I hope someone might be able to help me with.
I have a mute button that I created and I have another movieclip inside of that button. All I want it to do is when I toggle the mute the movieclip inside will go to the according frame.
However, every time I try to call the movieclip inside of the button, this error comes up:
Access of possibly undefined property mcMuteToggle through a reference with static type flash.display:SimpleButton.
The instance name for the movieclip within is "mcMuteToggle".
Why not make movieClips that act like buttons?? Since I dont think actual button (simpleButton) types can deal with sub-MovieClips (especially if they too have code). Even if possible don't do it, I can predict a mess whereby Button does things it shouldn't do depending on what code you have in those MClips.
Try an alternate button method, just for a test... You didnt show any test code to work with so I will make assumptions..
1) Make a shape (rectangle?) and convert to MovieClip (or if all coded, then addchild shape to new MovieClip). Let's assume you called it mc_testBtn.
2) Make that MC clickable by coding mc_testBtn.buttonMode = true;
3) Add your mcMuteToggle inside the mc_testBtn
(or by code: mc_testBtn.addChild(mcMuteToggle);
Now you can try something like..
mc_testBtn.addEventListener (MouseEvent.CLICK, toggle_Mute );
function toggle_Mute (evt:MouseEvent) : void
{
if ( whatever condition )
{
mc_testBtn.mcMuteToggle.gotoAndStop(2); //go frame 2
}
else
{
mc_testBtn.mcMuteToggle.gotoAndStop(1); //go frame 1
}
}
This is likely due to strict mode. You can either disable it in the ActionScript settings dialog, access it with a different syntax myButton['mcMuteToggle'], or make a class for the symbol that includes a property mcMuteToggle.
You can also check to make sure the symbol is actually on the stage and that clip is actually in the button:
if('myButton' in root) {
// ...
}
if('mcMuteToggle' in myButton) {
// ...
}
i think u just overwrite that codes. You u can use something like this:
var soundOpen:Boolean = true;
var mySound:Sound = new Sound(new URLRequest("Whatever your sound is"));
var mySc:SoundChannel = new SoundChannel();
var mySt:SoundTransform = new SoundTransform();
mySc = mySound.play();
mcMuteToggle.addEventListener(MouseEvent.CLICK, muteOpenSound);
function muteOpenSound(e:MouseEvent):void
{
if(soundOpen == true)
{
mcMuteToggle.gotoAndStop(2);
/*on frame 2 u need to hold ur soundClose buton so ppl can see :)*/
soundOpen = false;
mySt.volume = 0;
mySc.soundTransfrom = st;
}
else
{
mcMuteToggle.gotoAndStop(1);
soundOpen = true;
mySt.volume = 1;
mySc.soundTransfrom = st;
}
}
This is working for me everytime. Hope u can use it well ;)
I have a MovieClip inside library, linkaged to MyObject and it contains a textField.
I don't know how I can access this textField without using the getChildByName method.
Apparently, the 3rd section works when object is on stage (without using addChild). But when using addChild I think there has to be some kind of casting; which I don't know how.
var childElement: MyObject = new MyObject();
childElement.name = "theChildElement";
container.addChild(childElement);
btn.addEventListener(MouseEvent.CLICK, changeText);
function changeText(event: MouseEvent): void
{
var targetBox:MovieClip = container.getChildByName(childElement.name) as MovieClip;
targetBox.textField.text = "hello"; // THIS WORKS
// This works too:
// MovieClip(container.getChildByName("theChildElement"))["textField"].text = "hello"; // THIS WORKS TOO.
// THIS DOESN'T WORK. why?
// container["theChildElement"]["textField"].text = "hello";
}
As confusing as it may seem, instance name, and name are not the same. From your code you should always be able to get to your MC by it's variable name. To get your last like to work you could just use this.
childElement["textField"].text = "hello";
There is a difference between Symbols created by the Flash IDE, which aggregate other DisplayObjects and programmatically created DisplayObjects.
When a DisplayObject is created in the Flash IDE, it's instance name can be used to resolve the instance as a property - which means it can be accessed via []. The [] can be used to access properties or keys of dynamic declared classes - like MovieClip. This necessary because you'll most likely down cast to MovieClip instead of using the symbol class created by Flash. That is not possible when simply using addChild, addChildAt or setChildAt from the DisplayObjectContainer API.
It is always the save way to access it via getChildByNameand check for null because otherwise your app, website or whatever is doomed for 1009 errors as soon as someone is changing the symbols.
I'd create a bunch of helper methods, like
// not tested
function getChildIn(parent:DisplayObjectContainer, names:Array):DisplayObject {
var child:DisplayObject, name:String;
while (names.length > 0) {
name = names.shift();
child = parent.getChildByName(name);
if (!child) {
// log it
return null;
}
if (names.length == 0) {
return child;
}
}
// log it
return null;
}
function getTextFieldIn(parent:DisplayObjectContainer, names:Array):TextField {
return getChildIn(parent, names) as TextField;
}
function getMovieClipIn(parent:DisplayObjectContainer, names:Array):MovieClip {
return getChildIn(parent, names) as MovieClip;
}
Your third method doesn't work because you are trying to call the ChildElement by it's name
without using getChildByName method. On the other hand, you shouldn't call your textField textField, because that's already an actionScript property.
Your should rather call it 'displayText' for example.
For a textField called 'displayText' contained in childElement :
function changeText(event:MouseEvent): void
{
childElement.displayText.text = "hello";
}
I'm trying to do a little project for my class and though I know how to do it the long way I'd prefer to do it in a more intuitive way so that I can avoid having to copy and paste a load of essentially the same code. The idea is to have a function which will create an instance of a class object with it's own unique name, set it's position/size/etc, and then add that child to the stage. Looking at this (what I have now) might help out a little bit.
//Set up variables for all deco pieces
var decoGreen:GreenBall;
var decoRed:RedBall;
var decoStar:Star;
var decoFlower:Flower1;
var decoYellow:YellowBall;
var decoBlue:BlueBall;
//Functions to allow easier object placement
function makeDeco(posX:Number, posY:Number, decoName:String, rootClass:Object):void
{
decoName = new (rootClass)();
decoName.x = posX;
decoName.y = posY;
addChild((decoName));
}
makeDeco(90,320,"greenBall",GreenBall)
Now obviously this code doesn't work and it's pretty rough right now but I think it's sufficient to understand what I'm trying to accomplish here. Thanks for any and all who attempt to decipher my mess! :D
You are pretty close from what I can tell and if I understand your question, it would simply be using the getDefinitionByName class
function makeDeco(posX:Number, posY:Number, decoName:String):void
{
var DecoClass:Class = getDefinitionByName(decoName) as Class;
var deco:DisplayObject = new DecoClass();
deco.x = posX;
deco.y = posY;
addChild((deco));
}
makeDeco(90,320,"greenBall")
You don't need to define the variables initially like you did, granted they've all set to "Export as actionscript" in the library. For example calling a string of "greenBall" would mean you have a movie clip in the library with a class name of greenBall
I am trying to migrate as2 to as3 code. The normal solution to my problem involves using the first parameter of the createEmptyMovieClip() as the name of your movie clip. In several instances I have a dynamic value for this first parameter- so my question is How should I go about doing this?
//my code
function someFunction (){
loader_mc = this.createEmptyMovieClip("text"+value, value);
value++;
//do stuff with it
}
//normal non-dynamic solution
function someFunction (){
var text:MovieClip = new MovieClip();
addChild(text);
//do stuff with it
}
In your question, you're already saving a direct reference to the MovieClip. If that's the only reference you need to do your work, then you really don't need to give the MovieClip a name.
If you do need the name, though, you can always assign the MovieClip a name after the fact:
var myClip:MovieClip = new MovieClip();
myClip.name = "text"+value;
parent.addChild(myClip);
This will let you use the getChildByName method:
parent.getChildByName("text"+value);
I experienced a problem with the name property in as3, I created this "dot" movieclip and I exported to a class,
then I anonymously created a bunch of dots using a loop. I assigned numbers as name to each dots
private function callDots(num:Number):void
{
for (var i = 0; i < subImagesTotal[num]; i++)
{
var d:Dot = new Dot();
d.x = i*23;
d.y = 0;
d.name = i;
dotContainer.addChild(d]);
}
}
so far so good, I checked that if I trace the name here, I will get the number I want.
However, it's not giving me the numbers if I trace it in other functions.
I added all of my dots to "dotContainer", and if I click on one of the dots, it will call this function
private function callFullSub(e:MouseEvent):void
{
var full_loader:Loader = new Loader();
var temp:XMLList = subImages[sub];
var full_url = temp[e.target.name].#IMG;
full_loader.load(new URLRequest(full_url));
full_loader.contentLoaderInfo.addEventListener(Event.INIT, fullLoaded);
}
e.target.name is suppose to be numbers like 1 or 2, but it's giving me "instance66" "instance70" and I
have no idea why. Because I did the same thing with loaders before and it totally worked.
Any ideas? Thanks.
christine
The e.target returns the inner most object clicked on, this could be a TextField, another MovieClip or posibly a shape (I'm not 100% of the last one) inside the "Dot".
To prevent this you could try to set the mouseChildren property to false on the Dot's when you add them. This should insure that nothing inside the dots can dispatch the click event, and thus the Dot's should do it.
Perhaps you could also in the event handler verify the target type with code like this:
private function callFullSub(e:MouseEvent):void
{
if(!e.target is Dot)
throw new Error("target in callFullSub is not Dot but: " + e.target.toString());
//The rest of you code here
}
The answer is [e.currentTarget.name] I perform this all the time!
Should return "Dot1" "Dot2", etc.
If the value you wish to return is a number or other data type other than a string (name of object) use [e.currentTarget.name.substr(3,1).toString()]
Should return 1, 2, etc.
Navee
I tried to reproduce your problem first with Flex using runtime created movieClips and then with Flash using Dot movieClip symbols exported for ActionScript. Neither application exhibited the problem.
You may already know names like "instance66" "instance70" are default enumerated instance names. So, whatever is dispatching the MouseEvent is NOT the dot instance. Perhaps you are unintentionally assigning callFullSub to the wrong targets, maybe your containers? Try assigning it to dot instance right after you create them, like this:
private function callDots(num:Number):void
{
for (var i = 0; i < subImagesTotal[num]; i++)
{
var d:Dot = new Dot();
d.x = i*23;
d.y = 0;
d.name = i;
d.addEventListener(MouseEvent.CLICK, callFullSub);
dotContainer.addChild(d]);
}
}
Be sure to temporarily comment out your original assignment.
Try this might work,..
d.name = i.toString();
You have not shown enough of your code for me to be able to give you a DEFINATE answer, I will however say this.
//After you create each loader you need to set its mouseEnabled
//property to false if you do not want it to be the target of
//Mouse Events, which may be superseding the actual intended target;
var full_loader:Loader = new Loader();
full_loader.mouseEnabled = false;
//Also you could name the loaders and see if what comes back when you click is the same.
ALSO! Add this to your Mouse Event handler for CLICK or MOUSE_DOWN:
trace(e.target is Loader); //If traces true you have an answer
I believe that the mouse events are being dispatched by the Loaders.
please provide more of your code, the code where the Loader.contentLoaderInfo's COMPLETE handler fires. I assume this is where you adding the loaders to the display list as I cannot see that now.