Flex :: Events - 4 States IncludeIn And Component CreationComplete?
Feb 2, 2011
I have a component that, once it's all ready, I need to set the state based on a variable I'm reading in from XML. I tried doing it with creationComplete, but it's apparently not ready, as the state isn't being set with elements rendering properly, but the states & rendering work fine if I do a subsequent state change with a click action on some element.
What should I do in this situation to make sure the state gets set at the right time & elements that should appear due to includeIn exist so they can be rendered? initialize instead of creationComplete doesn't seem to do the trick for the first time the component is created. Any successive calls to the component are fine.
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Sep 15, 2010
In mxml you declare states like this[code]...
How do you acheive the same in an ActionScript class? Apparently it's the same in Flex 3 and Flex 4, whatever it is.
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Feb 7, 2011
i'm trying to change components states through a control bar button (id=btn) in main... so i add an event listener to it ... the code goes like this
import flash.events.EventDispatcher;
import flash.events.MouseEvent;
import mx.core.FlexGlobals;
[code].....
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Feb 8, 2011
Can transitions be added to a source code that uses includeIn and excludeFrom to show/hide elements? It seems that elements are hidden immediately not allowing enough time for the transition to be played.
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Jan 4, 2010
I have written a custom component for drawing a circle in Flex. But When I try to write a click event or mouseDown event for that component, it doesn't work.[code]...
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Jan 21, 2010
I created a flex component that hosts several built in (mx) components such as a listbox and combo box. My component relies on external data, and I need to expose events such as ComboBox.enter and List.click to get certain pieces of data.I was wondering if there is any easy way to do this without having to create my own custom event handlers. I'm simply trying to expose these events with different names so that when my component is used, I can do things such as:
<?xml version="1.0" encoding="utf-8"?>
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[code]........
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Jul 19, 2010
As per the book, 'childAdd' event of parentcontainer should be triggered after triggering of 'PreInitialize' and 'Initialize' event of childcontianer while as per the program out put it seems otherwise.What I found in books is as below:
Container----------Component
Preinitialize
------------------Preinitialize[code].....
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Jun 24, 2011
I'm taking my first stab at writing a custom flex 4 component by extending the UIComponent class. Unfortunately, I cannot get the component to respond to any sort of mouse events.I've tried setting mouseEnabled to true is the component, as well as setting mouseChildren to true in the parent (the stage object). It seems whatever I do, my click events can be detected from the stage, but not with the component.Here is my component class:
package components {
import mx.core.UIComponent;
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[code]......
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Jun 16, 2010
I have built a Air 2/Flex 4 kiosk application with Flash Builder 4. Currently I am implementing a touch screen browser to enable users to navigate company training videos. In an attempt to improve the usability of the website on the touchscreen I have placed the HTML component in an adaption of Doug McCune's DragScrollingCanvas (updated to use the flex 4 'Scroller' component) to allow users to scroll the webpage by dragging their finger across the screen. The mouseDown event is used to start scrolling the viewport.
In addition the webpage was modified to disable text selection with the following css:
[Code]...
As an alternative I also tried adding a group container with the same dimensions as the HTMLLoader to detect the mouseDown events (so that the group container and HTMLLoader have the same Dragable parent container) and was able to capture mouseDown events and scroll the viewport as expected. However as the mouse event is handled by the group container, I am now unable to navigate the webpage.
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Jul 3, 2010
I have made a tile list is Adobe Flex as follows
[Code]...
the problem is the creationComplete event is not fired for each PageImageRenderer, and it is fired only for the tiles visible at start so the rectangles drawn in initComponents() is only drawn for those tiles with valid values, and when I scroll to next row using scrollToIndex() function the rectangles are shown with previous values. and no initComponents() is called for these tiles? however the data.name, data.class are correctly displayed but not the rectangles, why it is so? What is the proper event against which I should call initComponents()?
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Aug 19, 2010
I am using the new Flex4 Spark stuff but I'm stuck at an awful problem. Let me explain a bit of the situation first. I have a container (mx:Canvas) in which I do addElement() of one type instances (DocumentWindow). The document window class is supposed to be the holder for a view according to the type of the document. The DocumentWindow class extends TitleWindow. I also have a task bar which is a mx:Canvas with buttonBar inside so that the windows should be switchable. So in 2 words I got windows holder and a taskbar. The strange thing comes now: When I put a DocumentWindow with type "doc" (which loads swf made by swftools) the window appears in the windows holder and as task on the taskbar.
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[Code]...
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Apr 4, 2011
I'm working with a large flex applications and I have noticed that one of our largest components (with lots of child canvases) takes about 6 seconds between the initialize and creationComplete events. I've been doing some reading and have found that having lots of nested canvases can cause slowdowns, but i'm not sure if this is where the slowdowns would be?
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May 16, 2011
I didn't get the difference between those two event.What is the difference between them ?
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Jul 26, 2011
I have a creationComplete="myMethod(event)" in my s:Application, and it runs fine on my 3 flex (Flash Builder 4) development machines. However it is not working on the 2 end user machines I tried it on today!
It is not executing the creationComplete at all, but it is running the application and it seems like all the other code is running fine - with the exception of possibly some other creationComplete code for other components in the app.
On my machines I have tested it under IE 8 and 9, FireFox and Chrome - on all 3 machines.
On these two machines it has the problem on both IE 7 and IE 8. I even installed FireFox new and it also has the issue. After installing the latest flash player and deleting all browser history/cookies it still has the problem.
What might cause the creationComplete to not execute?
Update: I tried using initialize() and no difference.
However, I believe I found the line of code causing the problem:
var isDebug:Boolean = new Error().getStackTrace().search(/:[0-9]+]$/m) > -1;
If I comment that out, it works fine. I need that to know if my app is running in development/debug mode or on an end users machine.
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Nov 12, 2009
I have a simple component I created which I instantiate in my main program like so:[code]I receive the error "Cannot access a property or method of a null object reference" on the second line because newMessage was not fully created prior to hitting the second line of code trying to set my "body" textarea's text. I know I can build a "creationComplete" event handler, but isn't there a simpler way to do this?
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Mar 7, 2011
I tried to send some services to fetch data in the creationComplete handler. Then I need to process the server raw data before displaying some sub components. Where should I put these kind of code?
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Apr 30, 2010
I've coded this small snippet to show what I'm not understanding:
[Code]...
Shouldn't I be able to read loaderInfo inside the creationComplete handler? I'm trying to pass a string from the html to my flash component, that's why I have to get loaderInfo working.
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Dec 17, 2010
In my flex application I use the viewstack.selectedchild() property to change the views.
When I revisit the views by the viewstack.selectedchild() property the initialize method doesnot get invoked..
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Jan 13, 2011
I have created a flex project on flash builder 4. In the MXML I have
xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="init();"
And to check if it runs
[Code]...
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Sep 8, 2011
I have a spark DataGrid component with several columns and I want to have my application default to descending order on the first column in the DataGrid. I would like to use the built-in default sort that occurs when clicking the top header once. I have no need to sort the ArrayCollection I'm working with or change what the comparators are.I also want any user-generated sorting such as clicking on a different column's header to override the default sorting.
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Mar 19, 2012
I have the following Application tag code in my widget:
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns:local="*"
width="100%" height="100%" minWidth="200" minHeight="200" layout="absolute"
creationComplete="init()"
defaultButton="{Send_btn}">
[Code]...
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Aug 23, 2010
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Chimp is a pretty cool library for those interested. It's a little old and there doesn't seem to be much motivation to expand it past UIComponents. So for my purposes it wont do.Again, what do you do for setting up these systems?PDATE: I had to compromise, but it actually worked out pretty well in the end. Instead of destructively laying on permissions (having everything available at first and removing the elements thereafter), the system now works constructively. Here's a sample:
[Bindable]
public var managePage:ManagePage;
[Bindable]
[code].....
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Apr 5, 2011
I'm interested in finding out the best approach to this issue, it's not technically difficult but there must be an elegant solution. Basically i have a form that features mostly text inputs, i would like to change the style of the input boxes based on the current state. I can do this in the mxml on each input...
[Code]...
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Apr 24, 2010
I'm trying to work out how to use states in my Flex app.I've created two states, State1 and Stage 2. Both are based off the base state. I've created a few visual elements for State1, and given each of them includeIn="State1".But when I'm in design mode and click on State2, these elements are still visible?If I try to delete them while State2 is selected, all that happens is RemoveChild is added to the State2 tag.
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Aug 11, 2010
I would like to know if there is a way to add states to a button in flex 4 in addition to the default states that are present.
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Jun 23, 2011
I have a component "child" which has a cancel button. Now this component is placed in a state called "newChildComp" I also have another component called "parent". In the parent component, i have a button that dispatches an event. Here is the event code:
[Code].....
so, basically,i am checking to see if the cancel button component in the Child component, while i am still in the parent Compoent, was clicked, if it was clicked, call the cancelButtonHandler. The problem is by the time the addNewChild handles the event, that cancel button was still null. My question is how do i solve this without using the itemCreationPolicy on the cancel button?
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Jul 23, 2009
I have an app that I am currently using a viewstack to display each page and I am wondering is this the right way to go, or should I use different states (or something else).
The site is powered by a menu bar with the top level items of Home, Tools, Support. Underneath the Tools menu is a submenu with Tool1, Tool2, Tool3. Currently when the user clicks on any of the tools in the Tool submenu I bring up a child container from the viewstack (each child is actually in a separete component).
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Oct 18, 2010
I have the following panel component called AdvancedPanel with controlBarContent:
<!-- AdvancedPanel.mxml -->
<s:Panel>
<s:states>
[Code]....
Using the CustomAdvancedPanel inside an application component shows an empty panel with the "Go to edit" button. But when I click it, the "Extra edit button" becomes visible, but the "Show in edit" button inside the controlBar doesn't.
When the CustomAdvancedPanel is empty, without redeclared states and "Extra edit button" the panel works just fine.
I think it is because the State object declared in AdvancedPanel isn't the same as CustomAdvancedPanel, so the state is different, even if they have the same name. However. I can't use the states of AdvancedPanel inside CustomAdvancedPanel without (re)declare them in mxml.
Is there any way to achieve this kind of state-reuse? Or is there a better way to obtain the same result?
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Mar 8, 2011
I am trying to use global application states to manage roles in my application. How can I use <properties.state> everywhere in my application if I declare it in my top level application?
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May 17, 2011
I'm having a crack at making my first Flex mobile application (although I'm not new to Flex), and I've tripped at the first hurdle.
I cannot get ViewNavigatorApplication to display a view when trying to use firstView with states e.g. firstView.phone, firstView.tablet.
I'm just left with a blank action bar and content area.
If I try setting setting firstView with no state (e.g. firstView="view.HomeView") the view loads fine.
[Code]...
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