Actionscript :: Pass Arguments Into Event Listener Function In Flex
Jun 20, 2011
Since when using sql lite if you try and do a function at the same moment it throws an error, im just trying to make a function that will check if its executing, and if it is try again in 10 milliseconds, this exact function works fine if i dont have to pass any arguments to the function but im confused how I can pass the vars back into the function it'll be executing.[code]
I searched the interweb for DAYS trying to find how to accomplish this via an event listener in AS3, but everything I found suggested creating a custom Event. The problem with this, is you have to decide the arguments you wish to pass in advance, and I wanted to create them dynamically on the fly ( for example: passing a string that a user entered into a textfield to some function for processing ).
So last night I spent hours scouring forums - and UREKA! I finally found something that I was able to tweak to send a variable number of arguments of any data type. I've never posted on a forum, but it was such a breakthru that I had to share it with the world.
Here is the code:
btn1.addEventListener( MouseEvent.CLICK, function onClick(e:Event ) { displayArgs(e, new Array("Larry", "Curly", "Moe") ) } ); btn2.addEventListener( MouseEvent.CLICK, function onClick(e:Event ) {
How do i pass a variable to a function from an event listener which is inside a function Below is a function that is called when after loading some variables
function dataOK(mydataevent:Event):void{ var j:int = 0; do { trace(j);
[Code]....
This is a simplified version of the original code. The above function generates an error because j is undefined in the function. I am wanting to get the variable j when the button is pressed.
How do I pass the variable j to the Button_Click function?
I'm working on a website navigation wherein I want that on clicking the navigation buttons, a movie clip eases out to that clicked button to show the current page. I'm able to move the movieclip to the button's location but I need to remove the event listener once the movieclip stops over the navigation button.
Code: import flash.events.Event; btnStart.addEventListener(MouseEvent.CLICK, startMovie); function startMovie(e:Event):void { ball.addEventListener(Event.ENTER_FRAME, moveBall(btnStart)); } function moveBall(bt:SimpleButton):Function { [Code] .....
I've written an event listener that passes 2 arguments with it. Now, after the condition is met,I've to remove the event listener but with no success..Here's the code:
//Function animateChar called on Enter Frame event with 2 arguments www.addEventListener(Event.ENTER_FRAME, animateChar(184, 86), false, 0, true);
//Here's where animateChar is defined
private function animateChar(__x, __y):Function { return function(e:Event):void { var t = e.target; t.x += (__x - t.x)/speed; t.y += (__y - t.y)/speed; if ((Math.round(t.x) == __x) || (Math.round(t.y) == __y)){ t.removeEventListener(Event.ENTER_FRAME, animateChar); // Not working.. } } }
var service:HTTPService = new HTTPService(); if (search.Location && search.Location.length > 0 && chkLocalSearch.selected) { service.url = 'http://ajax.googleapis.com/ajax/services/search/local'; service.request.q = search.Keyword;
[Code]......
I want to pass the search object to the result method (onServerResponse) but if I do it in a closure it gets passed by value. Is there anyway to do it by reference without searching through my array of search objects for the value returned in the result?
I am creating the columns of a datagrid dynamically at run time and I need to allocate the sort compare function to those columns based on the data type of that column, is there a way I can pass some argument to that compare function which could tell the function what type of column is it going to operate on?
I have an object that has all the elements I would want to pass arguments: var args:Object = { 'dog', 11, myArray }; and I want to be able to pass the contents of args to doSomething without making any changes to doSomething (assume it's someone else's function) and I'd like to do it in a way that doesn't assume I will know anything about the contents of args.
Basically what I'm trying to create is a custom timer that uses frames rather than milliseconds. But I can't figure out how functions like setInterval calls the function you passed along with the arguments. First I create a reference to the function I want to execute after a certain interval and name it fc, then I create a list of arguments my function want to pass using Array, but then how do I put those arguments in fc()?
I headed some problem which can't solve. It's simple. I'm making slideshow, and wanna pictures to be dynamically loaded. List of images is stored in list.xml - a valid xml file. Now, here is piece of the code:
var imgno :Number ; //the var which tells the number of images listed in list.xml var myXML:XML; var myLoader:URLLoader = new URLLoader();
[Code]....
So, the triggered function processXML cannot change value of any variable which stands out of her. Is there a way to export (in this case) information about amount of images listed in list.xml to some of the variables that I can use later (for example imgno).
I have 3-4 swf those i want to load one after another like a slideshow.What i want to do is get the total frames of loaded swf and want to pass that value to Timer object's delay parameter. i have converted total frames to milliseconds so i can use it in timer constructor. But i am not getting the value of that variable outside of my Event.COMPLETE listener method. Here is my code what i have done
I need to be able to communicate between two applications that reside on the same machine. One is using Flex and the other is in C++. I would like to be able to call functions and pass arguments to each other. What is the best way to communicate between them?
I'm moving on to my next massive programming project and I'm trying to decide whether I should code it in as 2.0 or 3.0. I came across the new click event model in 3.0. Right now it's looking like a pain in the butt to me. So now I have to make a function and add it as an event listener? what the hell? What's the benefit? I understand stuff like this makes AS a more complete language but it's kinda annoying.
I am working on a game for my university project and I have run into a bit of trouble. I have the following code here:
function launchBall() { this.stage.addEventListener(KeyboardEvent.KEY_DOWN ,launchBallHandler); function launchBallHandler(e:KeyboardEvent):void { if (e.keyCode==32) {
[Code].....
Its set up so that when a ball goes off screen, it resets to a coordinate and launchBall is called.
LaunchBall then adds the event listener to see when the Space key is pressed and that starts the ball moving again. The problem I have now is I cant seem to get rid of that eventListener. I have tried removeEventListener and that doesn't seem to work. I have tried:
if (ball.xVel>0 && ball.yVel>0) { removeEventListener(KeyboardEvent.KEY_DOWN,launchB allHandler);
just below that code and that doesn't work either. It's not spitting any errors out at me but I am completely stumped.
I just started a course that does a little flash. To teach us they have us build a brick breaker game. I have come to a part were I have to remove all the Listener that were created for the game. Each level is a movie clip and when the level is over the level instance is removed from the child. From what I understand when the level is removed the Event.REMOVED_FROM_STAGE becomes true and the function attached should be called however it is not. Here is the code of the function that sets the listener and the function to be called:
I have a method which registers an event listener to each of the MovieClips in an array I have. The method is inside a class, and so is the listener function. The problem is, I'm getting an error that's says "Access of undefined property handleNavToggle", even though is declared.
fileReference.addEventListener(Event.COMPLETE, uploadCompleteHandler); private function uploadCompleteHandler(event:Event):void {}
Above is one way to add an event listener in Actionscript. By default the callback function needs to have an argument with name event and type Event. Is there a way to declare this function without any arguments :
private function uploadCompleteHandler():void {}
Edit : It's possible to add an event handler without any arguments in mxml. So one student wanted to know, why isn't it possible to do the same in actionscript?
printableInvoice.addEventListener(batchGenerated, printableInvoice_batchGeneratedHandler);Results in this error: 1120: Access of undefined property batchGenerated. I have tried it as FlexEvent.batchGenerated and FlashEvent.batchGenerated.
The MetaData and function that dispatches the even in the component printableInvoice is all right. It I instantiate printableInvoice as an mxml component instead of via action-script it well let put a tag into the mxml line: batchGenerated="someFunction()
I'd like a movie clip called "following_cursor_mc" to follow the cursor, regardless of which of several different frames the playhead may be on. I've reproduced the code below on each frame in which I would like the cursor to be followed by "following_cursor_mc" but these errors are thrown for each of the frames:
I'm trying to return XML from an event complete back to the main function, but can't figure out how to do it.Here's the functions I'm calling:Main File:
public var mySendAndLoad:SendAndLoad = new SendAndLoad(); mySendAndLoad.sendData(url,variables) The mySendAndLoad class: