ActionScript 3.0 :: Problem Setting Event Handler For Button?
Nov 24, 2009
I seem to be having a recurring problem attaching events to a button i have created within 2 other movieclips.I get the following error:TypeError: Error #1009: Cannot access a property or method of a null object reference.So it looks like it can't find the button, in order to attach the event listener. The question is why? I am attaching a similar event to a button on the main timeline and that works fine. So it looks like a scope issue, but I am referring to it properly.
I seem to be having a recurring problem attaching events to a button i have created within 2 other movieclips.I get the following error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
So it looks like it can't find the button, in order to attach the event listener. The question is why? I am attaching a similar event to a button on the main timeline and that works fine. So it looks like a scope issue, but I am referring to it properly.
I'm using Flash Remoting to grab a result set from a SQL Server database. Then, using the total records in the result set, I'm creating the respective number of movie clips on the stage. Each of these movie clips is an instance of the "button_mc" movie clip I have in the library, named "button_0", "button_1", ..."button_n". The library movie clip that I'm using to create the instances contains a standard Flash button.
Anyway, that part is working fine. What I want to do is dynamically generate the onRelease event handler for each of these unique buttons. When I try to do this within the for loop, it sets all the event handlers to the last item in the list. What I want to do with the event handler is change the text of a dynamic text field based on the button name.
e.g. buttonName.onRelease = function() { myDynamicTextField.text = "button_"+i; }
In some ways it makes sense that the event handler is always going to be the last available in the loop, as the handler is called after the loop is completed. However, I'm hoping there's a way to make the handler "stick" after the loop is completed.
for (i=0; i<answerArray.length; i++) { var myOptionButton1:spark.components.RadioButton = new spark.components.RadioButton(); myOptionButton1.label = answerArray.getItemAt(i).Answer_Choice;
I am trying to figure out a way for an action script to change the background color of a particular button state.
I have a puzzle graphic. As the mouse moves over the pieces of the puzzle, the colors change. When the mouse clicks on the puzzle piece I want them to permanently change. However, I cannot figure out how to access the bgcolor property of a button state object, such as the up state.
I have what seems to be a simple task, yet I cannot seem to figure it out. I am busy creating a project in ActionScript 3, and while I am fairly fluent in ActionScript 2, I am being stumped a bit here.
I have a simple dynamic text field inside a button object. This text field has the name of txt_title. I have attached event handlers to change the alpha of the buttons when they are hovered over, however I also want to change the value of the text field within the button, when hovered over. My event listener looks like follows:
I created a screen(calculator) with bunch of buttons,i can handle button event with one handler.But i want to know that can we do a one handler for all buttons......likein java we can perform the task of perticular button by like this
How would I make an image I load using AS3's loader class into a button with an event handler on it? Below is what I have started. And below that is my error I get when I click the message.
AS:
//call function that starts loading my image callButtons(); function callButtons():void {
[code]....
the error I am getting when I click the spanish.png on the stage is: ArgumentError: Error #1063: Argument count mismatch on MyVideoPlayer_CS4_fla::MainTimeline/playSpanish(). Expected 0, got 1.I NEEDED TO ADDED evt:MouseEvent
I have an event listener for a custom event type. This custom event overrides the clone method as required.In this event listener I want to dispatch an instance of a different type of event... a different custom event instance altogether. It also overrides the clone method as required.The problem is I'm getting a type coercion error: TypeError: Error #1034: Type Coercion failed: ...I do not know what is trying to do the casting. My code is:
/* elsewhere in a method */ addEventListener(GestureEvent.GESTURE_SCALE, handlePinched); /* the event handler */
I am writing a program that needs to go to a random frame after clicking a button. However, the program also needs to start on a random frame. When I call the function at the start of the program it gives me an 1120: Access of undefined property event error. The function is originally written as followed:
function randomMatchedTrial(event:MouseEvent) { ... lots of code that probably doesnt matter, but let me know if it does... }
the program starts by calling the function as followed:
randomMatchedTrial(event)
Can event handler functions be called outside of the event listeners they are handling?
I'm adding event handlers to dynamically created movies. The event handler is not active and the cursor does not change to a finger over the clip Here is the applicable code.
Code: function loadSubNav():void{ //Load Thumbnails
I would like to use System.showSettings(0) up front and trapwhen the user chooses Deny instead of Allow in an onStatus eventhandler as I show in attached code.
I want to extend my function to a better design to where I can pass a canvas object into so I don't have to write N functions.. I'm not sure as how to do this properly I've come up with a naive design with a switch but even then if I add another canvas I still need to write new code for the new canvas.
function fadeCanvasOut(event:TimerEvent):void { canvas1.alpha -= 0.1;
We (AS3 coders) all know that one of the great things about the AS3 event model is that handlers are scoped to their containing objects. I'm writing an EventDispatcher for JavaScript, and trying to achieve the same effect.My question could be answered in a couple different ways:A: How does ActionScript 3 set scope within an event handler to the handler's container object, rather than to the event handler's caller (the IEventDispatcher on whom dispatchEvent() was invoked)?
I'm loading some images from a database using a PHP script through CodeIgniter, but when I try to add an event handler to do some stuff with these images, Flex compiler is showing me an error:1180: Call to a possibly undefined method cloneCar.Why I can not add an event handler in this context?
I'm using a progress bar component in a movie clip and this progress bar works loading an external movie clip. However, once the external clip is loaded, it seems the "complete" event is not registering with the object listener. This is what I have:
ActionScript Code: this.createEmptyMovieClip("FOB", _root.getNextHighestDepth()); var progressBarListener:Object = new Object();[code].......
The code a little more complicated than this in that there is an array that stores some information and a setInterval command that calls the loadContent function loading each external movie clip. I can past the entire code if necessary.Also the progress bar component is set up as thus: in the main movie (root) there is a movie clip called progressBar. Within progressBar the component resides with a variant name of PB.For some reason, when the external clip is finished loaded, the progressBarListener doesn't seem to be called.
I'm trying to find a way that I can control how a flash movie handles the click event from the HTML page outside the movie.
I run a website where we have advertising space for Flash Ads provided by our customers which, when clicked, open their own website in a new browser window (i.e. target='_blank') - however this causes us a few issues:
1.) We want to track the success of their ads, so we give them a custom URL that their ad should link to instead of linking directly to their site. This URL logs the click before redirecting the browser to the customer's website.
2.) Often the flash files we get use GetUrl() which seams to trigger the popup blockers in IE 7 & 8.
These two points mean we have to provide them with the custom URL for them to include in their flash ad, and/or tell them how to set up the movie to handle the clicks in a way that doesn't trigger the IE popup blocker, and this doesn't make it as seamless as it should be to place an ad on our site.
So, what I'm trying to do is find a way that I can reference the Flash movie object with JavaScript (or similar), and set the click event to open up a specified URL - so if the customer's flash movie doesn't have the right URL set in it, or is triggering IE's popup blocker it doesn't matter because when we display it, we can modify the event handler to use the correct URL and to open up their website without tripping any popup blockers.
I'm editing an xml gallery.you can see how it works now here (thumbnails are different than images, cause it's just for the sake of testing now)[code]...
oki. this all works via for each loop which creates thumbnails dynamically. the event handler for the click on the thumbnail is inside the - also dynamically created via this for each loop - button over each thumbnail. more or less like this[code]...
and now: i'd like to add "next" and "back" buttons,so that the user doesn't always have to click the closing cross and go back to the thumbnails, but that he can also -once he selected an image - simply loop through the gallery image by image.
oki. so first i tried to get the name of the button clicked previously and store it in a variable, a thus this would tell which image should be loaded via loader (say, name instance56 means Image00002 was loaded, so if now user clicks next, Image00003 should follow) . but i'm simplytoo simple to get the variable out of the event handler and for each loop scope. i also tried to do it inside the event handler,but then it gets terrbily messy, and i can never force loader to load the right image.
So I am trying to essentially have one class dispatch an event into the flow when it is added to the stage, and have another class catch the event, but I'm having problems. I set up a little test to simplify/display the problem I'm having. There are 2 classes, and then just some init code on the timeline.
Is there a way to get the handler(s) function(s) of an event listener?
I'm trying to find a way to remove them without knowing what they are.
For example:
ActionScript Code: if (mc.hasEventListener(MouseEvent.CLICK)){ // this object has a MouseEvent.CLICK listener mc.removeEventListener(MouseEvent.CLICK, null ); }
Instead of null, I was hoping to find some function that retrieves the handler function.
I have classes that need to communicate with each other, but are instantiated at different times.Therefore I feel I need to create a universal Event Handler that my classes can add event listeners to,and can receive dispatched events from.
I'm creating a button to play an movie clip using onClipEvent() but I couldn't get it works. It contains a button (text) and a cube (movie clip). On that movie clip I have a button.I want the animation of movie clip play while my mouse is rollOver on my text. Does anyone know how to make that works??[code]
In a kiosk application (with NO mouse action) I try to mimic the action of buttons...with movie clips.I was wondering if that would be possible to create new event handler for MC?So that, by script, I could tell something like:
my_mc.selected = true my_mc.focused = true then have an event handler function like:
And by the way, what's the main differences between addEventListeners and addListener?I have a FLVPlayback component from which i wanna play 4 different flv clips referenced in a xml file.The xml part works fine.So I have my 4 buttons (components) here. When i click the button 1, i want to either send the variable 1 to a function that is build to load the desired flv in the player. The variable would determine which of the flv to play.either that or when i click a button, i want to set directly the .contentPath of my flv player, load it and play it via a simple function that would be referenced to in the addEventListener call hope everything is clear enough.I'm having trouble just making the buttons send different variables to a particular function, according to which of my 4 buttons are pressed.button 1 sends 0button 2 sends 1button 3 sends 2button 4 sends 3that looks pretty simple but seems like i cant even do that by myself.
