Flex :: Update - Why Does UpdateDisplayList Stop Happening
Jul 30, 2010
Overview: The code giving me the problem is deployed here: [URL] The problem I am running into is that a certain sequence of actions (I don't fully understand how or why) is causing my calls to invalidateDisplayList to fail to produce a subsequent call to updateDisplayList. What I know is that during this period, some other visual effects will fail to occur (such as changing the width of a component or the addition of a new child).
Example: The program below draws two columns of horizontal lines. The column on the left is drawn during commitProperties, the column on the right is drawn during updateDisplayList. A certain sequence of actions can cause the right column to stop updating.
To trigger this bug: First add a new item. Now hit the start button and a bar starts filling up. If you press the add row button, the right column and the filling bar both stop growing. The left column continues unfettered. The extra component won't appear until the last line of the if statement in TEComputeRow.tick() doesn't execute for a frame. Click on the stop button to halt the execution of the block inside the if statement in TEComputeRow.tick() and everything goes back to normal.
In flex component life cycle, after we make some change in a components property, invalidation methods schedules a call to methods like commitProperties, updateDisplayList, etc for some later time. I need to call the updateDisplayList instantaneously. Is there some direct way to do this.
Currently, both the labels are changed simultaneously after completion of the loop. Instead I need it to work like this, to first render the updated 'myButton1' label then enter the loop and then update myButton2's label. I know, it is elastic race track issue, but isn't there some way to achieve this ?[code]...
I have a custom component which is an HBox & I'm trying to resize a child which happens to be an image. This is image is inside a VBox which is also a child of the HBox. I have a number of these images so In UpdateDisplayList I call:myimageArray[0-5].setActualSize(50,50);but the image is never resized it just stays a large default size. The images source is a url path and I'm wondering if that is what is causing the problem?
I have an item renderer for a grid that has a fairly basic updateDisplayList function:
override protected function updateDisplayList( w : Number, h : Number ) : void { super.updateDisplayList( w, h ); var labelWidth : Number = Math.min( _labelDisplay.measuredWidth, w );
[Code]....
The next time I scroll the renders update to look like they should - but updateDisplayList is NOT called here (on the renderes). All that happens is that the renderers are re-positioned in the grid. Both the background and the label are displayed incorrectly initially so it's not just the label mis-behaving.
I've created a custom MenuBar to make this happen. But it just doesn't seem to happen. It never renders any of the changes I made to the Graphics.What am I doing wrong?[code]
So updateDisplayList is for laying out, positioning and sizing a component's children. It seems a waste to me, however, to have all that code running every time a render is called, even if no changes have been made to the relevant properties or child properties.The way I get around this for performance's sake (working on mobile) is to set a flag inside of my overridden updateDisplayList that lets a big part of my own sizing/positioning code run only the first time.Is this a bad idea/ big mistake? I just can't see the benefit to letting it run every time otherwise if I don't expect anything that affects sizing/positioning to change.
i have an rtmp folder with videos,I am trying to do a seamless change to next video using nestsream play2 method.have tried using the fast switching of NetStreamPlayTransitions. SWITCH like below.[code]The problem is the switching is not happening.offset=-1 is supposed to be fast switching. The idea is to make a seamless transition to the next video.if we dont use any transition method or use opts.transition = NetStreamPlayTransitions.RESET;its the same as not using any. It just switches normally.RTMP is supposed to provide a relatively faster transition, i am looking for a seamless option .
When i try to override the updateDisplayList to draw a backgroundImage for a tab navigator, the background does not fill till the end of the tab navigator. A space equal to the tab bar height does not get filled by the background. same is the case when I use an Image as backgroundImage. Any idea how to get this resolved?
In my game, if the ball hits the winBox, you get a Win message. The problem is that the ball bounces, and it might hit the box repeatedly. How can I prevent the message from happening twice per session?
if (simContacts.isCurrentContact(winBox,gameBall)) { // Won.
I found this post on the Actionscript.org forums about TweenEvent dispatches not happening consistently.
I've come up against a similar problem in the past. The first thing to check is that the Tween instance does not go out of scope. For example (this is pseudo code).[cod]e...
Am I right in thinking this is happening because it's still trying to execute actions that were happening in frame 1 (fading in of movie clips using transitions) when it goes to frame 2? If so, how do I stop these actions so this error doesn't occur?
I've got a situation where I have 7 movie clips -- 7 buttons.. when you click each button, the corresponding movie clip slides in -- and the previous movie clip slides out....My issue is, if the user clicks (for example) button 2 --- but before the clip is done "tweening in" clicks button 5 -- the clips get all jacked up... not sure how i would say -- "hey.. if a user clicks a button, and there is a tween going on -- wait until tween is complete"and here is my "click function" for each button -- of course this is only the 1st button.. but you get it..
Code: Select all // SET THE CURRENT CLIP var currentClip:MovieClip = slide1;
I have a simple jukebox section on site and need a preloader, to let the user know that something actually is happening when they click on play, and wait for mp3 to load. What is best way to create preloader based on the code I am using (which is as simple as can be!) here is the code:
Has anyone seen the issue with the progess bar, when uploading on a system running Windows 7.The progress bars show 100% immediately as the upload is happening, and the site looks like its frozen out - but its not, the upload finishes and the onComplete event is fired! So the upload is working, but not the progress bar.I am not even sure who's problem this is... is it MS, or Adobe
I have what seems a straighfoward situation: I update the source property of an image, when the image is loaded i want to redraw the border skin to fit the new size of the image.
newImgEdit.addEventListener(Event.COMPLETE, loadImgComplete); newImgEdit.source = myurl_ressource; private function loadImgComplete(evt:Event):void {
I am deploying Updates via SCUP and SCCM to hundreds of Computers. Fortunately Adobe provides an SCCM Update Catalog for both Adobe Flash ActiveX and Adobe Flash Plugin. But now my Problem: After publishing the Update via SCCM, the client is not supposed to be interfered with the Update Progress (which is working) I figured the Updater works like this: First SCCM checks if a Update needs to be deployed, if this is the case, The Flash Updater begins. First the old Flash Version is beeing uninstalled. But now: if the Client has a Browser Window (IE, or Firefox) open, the Updater is not able to install the new Flash Version and quits with an Error. This leaves the Client PC without any Flash (because its being uninstalled before) How can I prevent Flash being uninstalled due to the Update progress not working while a Browser window is open?
I've got a movieclip, which has got a dynamic text element.The movieclip uses a package for its codeThe package if obviously derived from the MovieClip classI've got a timer, that updates the dynamic text field every second.When debugging the code, I see that the timer works well. Its updates the value of the dynamic text field.
i've done some simple apps to get the felling of it, nothing involving updating a file or a database.I wanted help, how to do a query to a MySql DB from a Flex application (thats gonna be running in a web server).I didn't saw any duplicated questions, sorry if any exists, just point me to it.
I've created a AS3 class which extends UIComponent so that I can easily add it to my MXML layout. It works fine, but I'm trying to figure out how to update the UIComponent width and height dynamically. I want my super UIComponent to draw a border around the content, so I need get the specific 'content' dimensions in order to do this.
I understand the idea of UIComponent is that you are supposed to specifically set the width and height... but I am literally only extending it so that I am able to use my custom component with MXML easily.Is there a method in which I can get the width and height of a UIComponents 'content'?
I have been trying to find a way to connect Flex to sharepoint in an elegant way that allows me to update lists, build charts, and create widgets with FLEX on the client-side. I have researched this extensively but I am running into circles.
I understand the basics of Flex data connection/webservices/etc... , I just can't seem to get my head around how to use the sharepoint list services.
How can I add new nodes/elements/properties to the existing xml file at runtime in flex. I have a xml file which is used to display components in flex. I want to add/edit component and their properties at runtime.
To add new component I have created an object with all the properties and elements of components. How can I convert this object in xml format and update the existing xml file?
I create a custom component to override the linkButton to make it behave that if an exist value is found, it would shown as "Added".
By default the button label is "Add to cart", I could not make the button become "Added" after trying many trial and error on uHandler which I suppose, COMPLETE, ENTER_FRAME, CREATION_COMPLETE could not even update the label.
public class Btn extends LinkButton{ public function Btn(){ super();
i have the following code: <mx:Repeater id="user" dataProvider="{data}"> <mx:VBox styleName="repeaterVBox"> <mx:Text text="{user.currentItem.a}. {user.currentItem.b}"
[Code]....
the dataProvider 'data' updated itself every 3 seconds, so every 3 seconds that is a flicker of some sort, i see for a really short time an empty area and then it gets redrawn again. is there a way to make the update somewhat faster ?
I have datagrid binded with data acquired from web service which, as you may suspectretrieves data from some db. Datagrid has some editable columns and I want to update db through appropriate web service call without adding button "Update" as a last column in datagrid.
I have a custom <mx:DataGrid /> that is updated with data from a ColdFusion server every 60 seconds. I've noticed that every time the DataGrid updates and redraws the scroll position is reset to the top.
Is there a way I can preserve the scroll position for my DataGrid?
I'm trying to update a combobox/datagrid sorter that came from flex3 to a flex4 version but I keep getting an error that my newbie brain is not processing. The error is "1067: Implicit coercion of a value of type Array to an unrelated type mx.collections:IList."
i have numeric stepper in MXML component.when i entered manually numeric value and press a button to add the current value in my datagrid column row.First time its not effected in datagrid column.But when i clicked second time value effected in my datagrird column. How i can get manually entered value in datagrid column on first click of button.
protected function id_btnAdd_mouseDownHandler(event:MouseEvent):void { { edlColor = new EDLColor(); edlColor.ColorToString = "rgb(0,0,0)";
