I'm new to ActionScript and Flex but I was wondering, when do you create an MXML component and when do you simply code it in ActionScript? Does it matter either way, what are the pros & cons to both?
Does an MXML Component essentially create it's own class when compiled?
I've been trying to create a custom mxml component that extends another custom mxml component (i.e.MyMXMLComponent -> BaseMXMLComponent -> Group). I've been reading that trying to add visual children to MyMXMLComponent caused error with Flex 3 but that's no longer the case with Flex 4.
What I want to know is whether this is a supported/fixed/documented feature of Flex 4? or just some undefined behavior in Flex 4 that may get changed with future updates?
if this is supported and documented feature, does anyone have link pointing to adobe document stating it as such?
I've been messing around with SWF Decompiler's latest and found that my Flex3 project's main MXML file is found verbatim in the SWF (in addition to the compiled class). How can I make sure this is not included?
View 8 RepliesIs is possible to bind class properties to mxml components ? E.g.: I have a class A.as with a String property nameValue. What I want to achieve is always having the latest value of a mx:Text component in nameValue.
View 2 RepliesIs it possible to access a declared component as an IFactory within an MXML class? I've used this style of declaring factories many times for Skin Parts, but I've never figured out how to access those factories from within the MXML.
Here's an example of what I would expect to work:
<fx:Declarations>
<fx:Component id="labelDisplay">
<s:Label fontSize="12" fontWeight="bold"/>
[Code].....
I'm trying to create simple custom component with two labels with this MXML:
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="250" height="30">
<mx:String id="result" />
<mx:Label x="5" y="7" id="titleLabel" text="{label}" width="120"/>
<mx:Label x="125" y="7" id="resultLabel" text="{result}" width="120" textAlign="right" color="#A41D00"/>
</mx:Canvas>
It is working well at runtime, bud I have troubles making it working at design-time. How can I make databinding work at the design time? If it is impossible, how should I code the label text assignments?
I've never been very good at writing AS3 classes as I rarely use them, but I needed a frame-based timer class so I decided to write my own. However, I don't know how to do everything in it that I want to, so could someone help me fill in the blanks and polish the rest?
ActionScript Code:
package com.estevangalvez {
import flash.events.*;[code].......
I was wondering how I apply an edited actionscript class to a component?
I've made a few changes to the TileLayout class (spark.layout.supportClasses.LayoutBase), but am unable to apply this new layout format to my group in my application... is it treated like a different tag within the layout tag?[code]...
I've always just developed my projects in as3 instead of mxml and I usually just setup my application to run a main actionscript file as my main doc root, sort of like how you do it in flash but in flash builder I do something like this:[code] how can I call place a call to that function hitme() within the call_from_outside() function between the <fx:Script> tags?The reason why I'm doing this is because I have some flash swfs that I load into another swf file and I can access the top level public functions of those flash swfs, however the top level of the flash builder/flex swfs is the main mxml file not my fake as3 class root. Of course I should think there is a way for me to access the as3 class methods of the mxml component but for keeping things with the same structure, I can bypass having to modify my loader scripts.
View 1 RepliesThere are lots of examples of how to create skinnable components in AS3 using the new Spark component architecture, however I've yet to find any such examples using MXML.What I'm mainly referring to is defining the skin parts and skin states. It seems as though the SkinPart metadata is supposed to be associated with properties and as such can't be used in MXML, is this correct?
View 1 RepliesI have a label component in a mxml file like below
<mx:Label x="700" y="409" text="Label" id="lble" width="131" height="41"/>
if i want to access it and change its text content within a method defined in action script class that i have written, how to do it?
lble.text="test";
I have a number of GUI dialogs defined using MXML. Assuming these mxml objects have been compiled into my application, is there any way to instantiate these objects using ActionScript, sort of like this?[code]...
View 1 RepliesI am trying to override a Button class, i have a few properties which i wish directly initialise with the mxml description of the component, like :[code]which function is triggered ( in order to override it ) when all properties with mxml description is fully initialised with their values ?
View 1 RepliesA Flex components values are initlized by init methord. In an application flow, How to refresh a mxml component data value ; as init is callled at the start up it self only.
eg. of mxml componet may be as simple as button label or text as complex as repeater whose data provider is a web service ( means a fresh quesy should be made to pull the data and refresh the dataprovider of repeater )
I'm trying to do this using only mxml, no <script> tags, although I don't necessarily need a solution that's only mxml. It was more of an educational exercise to see if I could do it all in mxml. I have a custom component that has a slider and textinput and their value/text properties are bound together. I'm surfacing a few properties of the slider in my component so that it can sort of be treated like a slider.
[Code]...
I have 3 mxml components. In Component 1, I let the users fill in some data. In Component 3 I want to use the data, but I can't find a way to make it work.
View 1 RepliesI'm having some problems importing a class, the message that Flash gives me is this; The class being compiled, 'ImageLoader', does not match the class that was imported, '[URL]'. The only line of code in my flash movie is this: import com.martijndevisser.*; And yes, the class is in that folder The class is from here: [URL] I've used the class before and it works fine, I just dont know what to do?
View 4 RepliesI have two components. One is called "InsideComp" and one is called "OutsideComp". OutsideComp has InsideComp as one piece of its component, and in my main MXML file, I have embedded an instance of OutsideComp. How do I access a public variable of InsideComp within my main MXML file?In Actionscript, I could just do something like:OutsideComp.InsideComp.valToChange = 5; But I dont know how to do it in MXML. I know this is probably an easy question.
View 4 RepliesI am trying to create my first real world Flex application. I will have a lot of different data entry / data view screens so I thought I would create many different components to deal with each different type of data that was being returned. I have a MXML application called Layout, and have component called "Navigator" which controls the menu, as well as a ViewStack called "MainContent".
I want the Navigator component to change the ViewStack on the Layout application to that of another Component (each Component is embedded within the Canvas of each ViewStack). I have a click handler on my Navigator which looks like this: Layout.ContentFrame.selectedChild=event.itemRenderer.data.clickValue; However it shows the error "Access of possibly undefined property ContentFrame through a reference with a static type Class." Is my approach a good way of doing it? I have attempted referencing it using FlexGlobals.Layout and topLevelApplication.Layout... neither of which work?[URL]
I have class name : some.path.exampleclass and have to instantiate class (like getDefinitionByName()). Problem is that getDefinitionByName() makes class exampleclass and i need class with FULL name : some.path.exampleclass to pass it to custom component [url]...
View 1 RepliesI compiled a simple AS3 project using Flex 3.5 (also tried Flex 4.1) to create a small swf which draws a simple red square on screen. Nothing too complex that requires special flashplayer support (see code below)
package
{
import flash.display.Sprite;
/**
[Code]....
and tried to load it into a AS2 swf I have compiled using Flash CS4. But that just didn't work. I don't get any errors when loading and the AS2 swf can load any swf, either compiled in AS2 or AS3 by Flash.
I'm not sure whether to post this in a flex forum or here,but since the error is generated from AS3 code, I'll try it here.When I try to load a compiled flex swf with the loader class.As a test I tried 2 very basic programs:See the actionscript code in the attached code..As you can see I just load the swf without doing anything.I've found very few threads about this error, and even less solutions...Does anyone know if it's even possible to load a Flex swf?
View 8 RepliesIn the Flash app I'm building, I have a "main" SWF that will load a variety of "child" SWFs.
All of the AS3 code for both the main SWF and child SWFs is contained in external .as class files.
In other words, each movie has it's own document class .as file.
There are also a number of .as class files for all of the common elements (e..g, UI buttons and controls).
So - for example - both my main SWF and all child SWFs use the "MyCommandButton" class; the code for this class is in MyCommandButton.as, which all SWFs reference (import).
Here's what I don't understand.
(Let's say that the code in MyCommandButton.as draws buttons that are red.)
First, I compile ALL of the child SWFs.
Next, I change MyCommandButton.as, so that the buttons it draws are blue, instead of red.
Then, I compile the main SWF.
When I run the app (main.swf), I would expect all of the buttons in the main SWF to be blue (since that's what MyCommandButton.as specified when main.swf was compiled), and all of the buttons in the child SWFs will be red (since that's what MyCommandButton.as specified when they were compiled.)
Instead, ALL of the buttons are blue, which means the change I made to MyCommandButton.as affected all of the child SWFs, even though I didn't recompile them.
I know that typically, a loader class normally can load in either a swf or an image file (like a jpeg), but there were some swf files that just would not load for some odd reason. So I decided to do some trial and error tests and discovered that the problem was coming from swfs that were compiled from flex.
At this point I decided to try a different approach and compile from flash instead using the .as file as a document class in a blank fla. I received the same effect of it not being loaded. It could not have possibly been a coding problem with the swfs compiled from flex; they were working fine on release-builds.
I've come to the conclusion that the problem is not with flex or flash, but just compiling swf from a document class. I did more research into the problem, and I only found that document class compiled swfs have only 2 frames (first one being the preloader, and the second being everything else). They had some example codes on using the loader class with these swfs, but the code only demonstrates with traces when its loaded; they don't actually explain or show how to make the swf viewable the way it should.
[Code].....
I am dynamically loading external SWFs in a Main Fla in response to clicks on a menu.
The loading code is standard and works fine for all of the SWFs except one. When I try to load it I get the following error: Error #2044: Unhandled IOErrorEvent:. text=Error #2035: URL Not Found.
I am certain that the URL to the problem SWF is correct. The SWF itself doesn't load any other SWFs or images. The problem SWF is linked to an external class file and compiled with it. i.e. in the properties panel of the main timeline of the problem SWF's Fla I have entered the path to the external class.
1. there is no problem compiling this SWF with the class (it works fine by itself)2. if I remove the external class from the properties panel and don't use it the resulting SWF imports without a problem into the Main Fla mentioned before So the problem seems to be the fact that the external class is linked in the properties panel. Is this a path problem?
I have two mxml files. one is main that is application tag mxml file and another is my mxml component file. I have a viewstack in my main mxml whose id is, say, "mainViewStack". Now I want to set selectedChild property of "mainViewStack" from my mxml component file. [code]...
View 4 Replieshow to use mxml component in another mxml component actionscipt code [code]but i am getting error saying "Type was not found or was not compile time constant:warning")
View 3 RepliesHow can i click a button on an .mxml component to open a specific selectedItem on a spark List from another .mxml component!?
View 1 RepliesI have a datagrid in my mxml file, say, samp.mxml.
<mx:DataGrid id="taskDataGrid" dataProvider="{initDG}" variableRowHeight="true"
editable="true" width="100%" paddingBottom="1" paddingTop="1" height="55" >
<mx:columns>
[code].....
How do I say an MXML component is inside some package? Well, it's in a different folder... I know how to do it ActionScript... But when I do in MXML I don't declare the package explicitly because I don't know how, and when I call it to my application, it states that The prefix "package" for element "package:Component" is not bound.
View 2 Replies