[flexcoders] FlexNativeMenu crash in the LayoutManager
This is in Flex 3.2: We have a rare crash in one of our components. We have no repro case, but we were able to catch it in the debugger once and get a callstack. Ive included the callstack at the bottom of this message. The error is: -: TypeError: Error #1034: Type Coercion failed: cannot convert mx.controls::flexnativem...@234d7df1 to flash.display.DisplayObject called from: mx.managers.layoutClasses::PriorityQueue/removeLargestChild Trying to figure out how this could happen... No component on this page actually even uses FlexNativeMenu... So that's odd. But we do use it in other parts of our application. We use it declared in mxml and we use it declared in .as. But, we don't do anything strange with it, and certainly not on this page. Tried to do research on exactly what removeLargestChild does, and why it would be trying to remove a FlexNativeMenu, but no dice. Anyone have any clues as to what I should dig in for here, or what the LayoutManager may be trying to do here? -ctm callstack: Main Thread (Suspended: TypeError: Error #1034: Type Coercion failed: cannot convert mx.controls::flexnativem...@234d7df1 to flash.display.DisplayObject.) mx.managers.layoutClasses::PriorityQueue/removeLargestChild mx.managers::LayoutManager/validateClient mx.core::UIComponent/validateNow mx.core::Container/createOrDestroyScrollbars mx.core::Container/createScrollbarsIfNeeded mx.core::Container/createContentPaneAndScrollbarsIfNeeded mx.core::Container/validateDisplayList mx.managers::LayoutManager/validateDisplayList mx.managers::LayoutManager/doPhasedInstantiation Function/http://adobe.com/AS3/2006/builtin::apply [no source] mx.core::UIComponent/callLaterDispatcher2 mx.core::UIComponent/callLaterDispatcher
RE: [flexcoders] FlexNativeMenu crash in the LayoutManager
Actually a context menu isnt being used on this screen.. but it is on previous screens. I will try littering those with validateNows just in case.. maybe one of them is still alive for some reason or something... We are having some issues with the flex4 upgrade, so its delayed, doh. From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Alex Harui Sent: Thursday, July 22, 2010 4:49 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] FlexNativeMenu crash in the LayoutManager That's a bug in Flex 3.x. It is fixed in Flex 4. Is a context menu being used in this scenario? You might try calling validateNow() before doing the rest of the work of the context menu option. On 7/22/10 11:44 AM, Christopher McArthur cmcart...@riotgames.com wrote: This is in Flex 3.2: We have a rare crash in one of our components. We have no repro case, but we were able to catch it in the debugger once and get a callstack. Ive included the callstack at the bottom of this message. The error is: -: TypeError: Error #1034: Type Coercion failed: cannot convert mx.controls::flexnativem...@234d7df1 to flash.display.DisplayObject called from: mx.managers.layoutClasses::PriorityQueue/removeLargestChild Trying to figure out how this could happen... No component on this page actually even uses FlexNativeMenu... So that's odd. But we do use it in other parts of our application. We use it declared in mxml and we use it declared in .as. But, we don't do anything strange with it, and certainly not on this page. Tried to do research on exactly what removeLargestChild does, and why it would be trying to remove a FlexNativeMenu, but no dice. Anyone have any clues as to what I should dig in for here, or what the LayoutManager may be trying to do here? -ctm callstack: Main Thread (Suspended: TypeError: Error #1034: Type Coercion failed: cannot convert mx.controls::flexnativem...@234d7df1 to flash.display.DisplayObject.) mx.managers.layoutClasses::PriorityQueue/removeLargestChild mx.managers::LayoutManager/validateClient mx.core::UIComponent/validateNow mx.core::Container/createOrDestroyScrollbars mx.core::Container/createScrollbarsIfNeeded mx.core::Container/createContentPaneAndScrollbarsIfNeeded mx.core::Container/validateDisplayList mx.managers::LayoutManager/validateDisplayList mx.managers::LayoutManager/doPhasedInstantiation Function/http://adobe.com/AS3/2006/builtin::apply [no source] mx.core::UIComponent/callLaterDispatcher2 mx.core::UIComponent/callLaterDispatcher -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui
RE: [flexcoders] Set Width of An Item Renderer Component Based on Visible Property of the Control
the includeInLayout property may also be helpful to you in this case, try:
includeInLayout={outerDocument.fncVisible()}
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf
Of Angelo Anolin
Sent: Thursday, May 20, 2010 2:46 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Set Width of An Item Renderer Component Based on Visible
Property of the Control
Hi FlexCoders,
I have declared an in-line item renderer in my datagrid:
mx:DataGridColumn headerText=Test textAlign=center sortable=false
mx:itemRenderer
mx:Component
mx:HBox horizontalAlign=center
mx:LinkButton id=lnk1 label=Link 1
visible={outerDocument.fncVisible()} width={???}/
mx:LinkButton id=lnk1 label=Link 1 /
mx:LinkButton id=lnk1 label=Link 1 /
/mx:HBox
/mx:Component
/mx:itemRenderer
/mx:DataGridColumn
as you may see, I am determining the visibility of the link button via a
function. What I want to achieve is that if the linkbutton contrl is
invisible, the width should be 0, but if it is visible, then width should be
100.
How do I pass in a function for the width of the control whether it's
visibility is set to true or false?
Thanks.
image001.jpgimage002.jpg
RE: [flexcoders] mvc pattern for flex
using Swiz here which works well for dependency injection, I would recommend it. However, Ive been hearing a ton of great things about RobotLegs recently. From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Fernando Wermus Sent: Wednesday, May 05, 2010 7:46 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] mvc pattern for flex Hi all, I was looking at Aconcagua. but there is a line of new code since a year and a half. Puremvc seems to be a kind of big compared to Cainrgorm. Which options have you choosen as the best for MVC in Flex? I know Caingorm and I dont like. thanks in advance -- Fernando Wermus. www.linkedin.com/in/fernandowermus
RE: [flexcoders] Flash Builder 4 java heap space error.
Thanks for the detials. Unfortuantely, Ive increased the numbers a great deal, tried a variety of different values, and read through the nice page you linked, and I am *still* getting the errors. And not just me, my entire development team on a large variety of hardware. Any suggestions on what our next steps should be? -ctm From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Oleg Sivokon Sent: Tuesday, April 27, 2010 1:01 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] Flash Builder 4 java heap space error. Increase JVM memory -Xms Am -Xmx Bm (A is the initial memory size B is the maximum size in megabytes) you may do this globally in jvm configuration file, or per application run. I even think that MXMLC will accept -jvmargs parameter to pass arguments to jvm before it starts (MXMLC exe is a launcher, that launches the mxmlc.jar). More here: http://www.caucho.com/resin-3.0/performance/jvm-tuning.xtp Reply to sender mailto:olegsivo...@gmail.com?subject=re:%20[flexcoders]%20Flash%20Build er%204%20 | Reply to group mailto:flexcod...@yahoogroups.com?subject=re:%20[flexcoders]%20Flash%20 Builder%204%20 | Reply via web post http://groups.yahoo.com/group/flexcoders/post;_ylc=X3oDMTJzNjRuaWE3BF9T Azk3MzU5NzE0BGdycElkAzEyMjg2MTY3BGdycHNwSWQDMTcwNTAwNzIwNwRtc2dJZAMxNTUx NDcEc2VjA2Z0cgRzbGsDcnBseQRzdGltZQMxMjcyMzk4NDk5?act=replymessageNum=15 5147 | Start a New Topic http://groups.yahoo.com/group/flexcoders/post;_ylc=X3oDMTJmNWlpaWxxBF9T Azk3MzU5NzE0BGdycElkAzEyMjg2MTY3BGdycHNwSWQDMTcwNTAwNzIwNwRzZWMDZnRyBHNs awNudHBjBHN0aW1lAzEyNzIzOTg0OTk- Messages in this topic http://groups.yahoo.com/group/flexcoders/message/155144;_ylc=X3oDMTM5NW 1hZWM0BF9TAzk3MzU5NzE0BGdycElkAzEyMjg2MTY3BGdycHNwSWQDMTcwNTAwNzIwNwRtc2 dJZAMxNTUxNDcEc2VjA2Z0cgRzbGsDdnRwYwRzdGltZQMxMjcyMzk4NDk5BHRwY0lkAzE1NT E0NA-- (2)
[flexcoders] Flash Builder 4 java heap space error.
Flash Builder 4 is crashing constantly for me with a java heap space error when compiling. It is driving me nuts. Im running on Windows Vista 64bit and 4GB of RAM. When this error occurs FlashBuilder is using about 780MB of RAM, and I have about 1.5GB of ram still free Research online suggests messing around with the vmargs in flashbuilder.ini. Ive tried changing the settings to ones people reccomended online to no effect. Im really not sure what these settings actually mean, so not sure what effect changing them has or what the right numbers are. I tried raising them all and still get a lot of heap errors. Can anyone give me any advice? -ctm
RE: [flexcoders] What is the MXML syntax for this?
Thanks for the response Alex. And this works great for my test example! However, I am curious, is this as deep as you can go, one level? Or is it possible to nest it deeper? Just trying to get an idea of whats allowed and how its actually working. Nesting one level deeper, in a simple test application, I get the error : could not resolve local:imageVar to a component implementation. so, for an example, if you had a ParentContainer, that had a variable named childComponent, that has a variable named imageVar. local:ParentContainter local:childComponent local:imageVar mx:Image source=myTestImage.jpg / /local:imageVar /local: childComponent /local: ParentContainter This gives the could not resolve local:imageVar to a component implementation. error. From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Alex Harui Sent: Wednesday, April 14, 2010 10:06 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] What is the MXML syntax for this? Are you looking for: local:myContainerComponent id=containerComponent local:imageVar mx:Image source=myTestImage.jpg / /local:imageVar /local:myContainerComponent On 4/14/10 12:53 PM, Christopher McArthur cmcart...@riotgames.com wrote: I have a component, that has a property of type Image. I need to assign a new Image component to it. this is trivial to do in action script. But, how do I do it in MXML? Example: mxml: local:myContainerComponent id=containerComponent/ actionscript: var myImage:Image = new Image(myTestImage.jpg); containerComponent.imageVar = myImage; Is there anyway to do that creation of the image, and assignment purely from MXML? The image cant be a child of anything else, so I cant just declare it randomly somewhere in the same container. For context, im using the Flash Component Kit, and the myContainerComponent is a container exported from flash a mx.flash.ContainerMovieClip. And it requires you to assign a component to its content property. Ideally, id like to create and assign this content component using mxml only. -- Alex Harui Flex SDK Team Adobe System, Inc.
[flexcoders] What is the MXML syntax for this?
I have a component, that has a property of type Image. I need to assign a new Image component to it. this is trivial to do in action script. But, how do I do it in MXML? Example: mxml: local:myContainerComponent id=containerComponent/ actionscript: var myImage:Image = new Image(myTestImage.jpg); containerComponent.imageVar = myImage; Is there anyway to do that creation of the image, and assignment purely from MXML? The image cant be a child of anything else, so I cant just declare it randomly somewhere in the same container. For context, im using the Flash Component Kit, and the myContainerComponent is a container exported from flash a mx.flash.ContainerMovieClip. And it requires you to assign a component to its content property. Ideally, id like to create and assign this content component using mxml only.
[flexcoders] Component Lifecycle Change in Flex4?
We are porting our project from Flex3 to Flex4. One of the common patterns we used for our components in Flex3, was to listen for the CreationComplete event, and then set some initial properties on that components children (defined in MXML). This worked fine in Flex3, however with the Flex4 SDK, these children are often still null in the creationComplete. Is there a better place to do this type of work now? -ctm
[flexcoders] How do you tell when a new component is actually displayed?
I need to be able to tell when a newly instantiated component, is actually being rendered to the screen so you can see it. Usually, I want to do this for complex screens. You navigate to the screen and it shows a loading screen, once that's rendered, I do some blocking action, like adding a complex list to the screen or doing some calculations. The problem Im having is there doesn't seem to be anyway to tell. Listening for after the first updateDisplayList, it isnt rendered yet, the first ExitFrame, it still isnt rendered, onAddedToStage, etc. (trying callLaters after all of these). Is there any way to tell when a new flex component is actually finished being layed out and is being rendered? -Christopher
RE: [flexcoders] Flex Builder Out of Memory Errors
Yeah, I get this constantly too. I have 4GB of ram, and Flexbuilder never goes above 700Mb, but still get the errors constantly. Ive also tried everything I can find on google adjusting the memory settings, tried values all over the place, and nothing, constnatly out of memory crashes. Our entire dev team gets this and we have a range of winXP, Macintosh, vista, and windows 7. Upgraded to Flash Builder 4, and no dice, still constant crashing =( From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of d9_tech Sent: Friday, March 19, 2010 2:31 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Flex Builder Out of Memory Errors It's pretty frustrating that Flex Builder regularly crashes with Out of Memory errors during compile and sometimes even when design view is refreshing. After searching for solutions and trying all sorts of memory configurations in the Flex Builder config file, our dev team finally gave up looking for a fix, hoping that things would get better in a patch release. Unfortunately, they haven't. With each update of Flex Builder the out of memory errors continue, sometimes manifesting as silent crashes where Flex Builder just disappears. Even after we all got new Alienware computers with 12 GB of RAM, Flex Builder still can't find enough resources for whatever it's trying to do during compile. Today I actually got three Out of Memory error dialogs at once, all piled on top of each other. Can someone from the Flex team please shed light on what's going on and let us know if there is a solution for this problem? thanks, Christian image001.jpgimage002.jpg
[flexcoders] Skinning Spark Components in Flash CS4?
I cant find any information on how to skin Spark components from Flash, perhaps using something similiar to the Flash Component Kit for Flex3. Here are two examples of Flex Components I would like to build in Flash. 1) A normal Button skin. Positioning the text label, and creating all of the up/down/over/etc states and transitions in Flash. 2) A container skin, that has some sort of flash graphic, with a container area, where an image is injected into this container from the Flex code. Both of these are things that we currently do in Flex3. But, there is some jankiness there, and I like a lot of the stuff in Flex 4's spark, so would like to figure out how to do these things with the spark components. Is this possible in Spark? If not what is the expected workflow for the more artist-driven components? I did find this article on doing it through illustrator http://help.adobe.com/en_US/Flex/4.0/html/WS145DAB0B-A958-423f-8A01-12B679BA0CC7 .html But, that didnt make it clear to me how to make it work with a Button skin, or do the image injection I referred to earlier. winmail.dat
RE: [flexcoders] help - code assist stopped working
Im having the same probem. Using Flash Builder 4 Beta 2 code assist does not work, and give the same error as the OP. Tried deleting the codemodel folder as Deane suggested, but unfortunately, saw now no change. Any other suggestions? -Christopher From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Deane Venske Sent: Thursday, March 04, 2010 2:31 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] help - code assist stopped working You need to delete the following folder from your workspace: .metadata\.plugins\com.adobe.flexbuilder.codemodel That will make it work again. This happens so often to me that I've made a batch file: @echo off REM The following will delete the prefs file in Flash Builder 4 Beta 2 that caused content assist to break RMDIR C:\Users\Deane\workspace\.metadata\.plugins\com.adobe.flexbuilder.codemo del /s /q @echo off REM The following will delete the prefs file in Flash Builder 4 Beta 2 that caused content assist to break RMDIR C:\Users\Deane\Adobe ColdFusion Builder workspace\.metadata\.plugins\com.adobe.ide.coldfusion.appcodegeneration /s /q RMDIR C:\Users\Deane\Adobe ColdFusion Builder workspace\.metadata\.plugins\com.adobe.ide.coldfusion.dictionary /s /q RMDIR C:\Users\Deane\Adobe ColdFusion Builder workspace\.metadata\.plugins\com.aptana.ide.editors.codeassist /s /q Change that to your folders and it will work (I use CF Builder too) You need to have the builders closed when running this. Thanks, Deane On 3/4/2010 10:55 AM, Chris Sheffield wrote: I apologize. This is probably more of an Adobe Support issue, but since I'm using beta 2 of FB4, I wasn't sure what kind of support is currently available. Anyway, I was working on a project yesterday and all of a sudden my code assist stopped working in .as files. Still seems to work fine in .mxml files, so not sure what's going on. Has anyone run into this? Is there anything I can do? The error I receive is: Content Assist did not complete normally. Please see the log for more information. java.lang.NullPointerException I haven't checked the log because I have no idea where it can be found. Running on a Mac, btw. I suppose my next step is to simply reinstall the product if I can't find another fix. Thanks, Chris -- Chris Sheffield Read Naturally, Inc. www.readnaturally.com
RE: [flexcoders] My APP momentarily freezes I pass through my A.C. and create my objects.
If you see my recent posts, I just had this exact same problem, check out the post I just made, if you need more details let me know, i can post the code I used. Since flash is singlethreaded, you can NOT have a progress bar update in a loop. If you want to update a progress bar while you do work, you need to do a little bit of the work, wait a bit, do a little more, wait a bit, etc. Unfortunately, with the flex progress bar component you seem to have wait quite a while for it to update, so I ended up going with a custom one. -Original Message- From: flexcoders@yahoogroups.com on behalf of MonkeyIsland Sent: Thu 3/4/2010 7:59 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] My APP momentarily freezes I pass through my A.C. and create my objects. Hello everyone, I'm having an issue updating my progress bar, it only displays 100% once completed. I've tried timers, callLaters, and anything else I could have thought of but then realized that my progress bar never updates because my app momentarily freezes as I pass through my ArrayCollection and create my objects... Is there a way to prevent my app from freezing? Thanks :) -David
RE: [flexcoders] Trouble with ProgressBar and manual updates.
Unfortunately, same problem with callLater in either pattern.
I was able to solve my issue though, and I did so like this:
-I created my own simple custom component.
-It has one property percentComplete, when this property is set it updates
the property and calls invalidateDisplayList().
-It ovverides updateDisplayList and uses the drawing API to draw a progress bar
there based on percentComplete. And at the end of updateDisplayList It calls
dispatchEvent.
-In my code, instead of listening for a timer, I listen for that event on my
custom progress bar. Every time I hear the event, I addChild and update the
percentComplete.
This works perfectly. Listening for ENTER_FRAME, EXIT_FRAME, RENDER, etc did
not work, so I had to add the custom event.
-Christopher
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Peeyush Tuli
Sent: Thu 3/4/2010 5:27 AM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Trouble with ProgressBar and manual updates.
what happens when you go the other way around... meaning that the add is
done before and progress bar update is sent to calllater?
On Wed, Mar 3, 2010 at 11:56 PM, Christopher McArthur
cmcart...@riotgames.com wrote:
callLater is a great suggestion, thank you. Unfortunately, was not
helpful in this case. Even delaying the adds by a callLater does not allow
the progressBar to update visually.
*From:* flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] *On
Behalf Of *Peeyush Tuli
*Sent:* Tuesday, March 02, 2010 10:18 PM
*To:* flexcoders@yahoogroups.com
*Subject:* Re: [flexcoders] Trouble with ProgressBar and manual updates.
it might be that all the processing is too much to be displayed in the same
frame. So this might help you
http://jimmyflex.blogspot.com/2007/11/dont-forget-power-of-calllater.html
~Peeyush
http://www.mds.asia
http://jimmyflex.blogspot.com/2007/11/dont-forget-power-of-calllater.html
On Wed, Mar 3, 2010 at 6:53 AM, Christopher McArthur
cmcart...@riotgames.com wrote:
Using Flex3 in AIR standalone application.
I have a ton of children I need to add to a Canvas dynamically. When I do
this, it takes a long time. So I wanted to display a loading bar to the
user.
I create a Timer, and every time the timer ticks, I update the loadingBar
and I add the child. I also update a textField with the loading progress as
a debug tool.
What I find is that the textField _always_ updates correctly in realtime,
but USUALLY the progress bar does NOT update at all until the entire
sequence is finished. If I make the tick time long enough, then the progress
bar works, but this time seems very dependent on performance of the
individual machine.
My question is, how do I know what the lowest possible tick time I can use
to make the progress bar update correctly is? Why does it work with the Text
field just fine? Or is there a better pattern I could be using to do this
correctly?
As you can see from the code, I tried some things like updateAfterEvent
and invalidateDisplayList to see if I could get it to update faster, but
those did not work (unless I set the tick time high).
code here:
*private* *var* pendingElementsToAdd:Array;
*private* *var* totalElementstoAdd:int;
*private* *static* *const* TIME_BETWEEN_ADDS:Number = 20;
*private* *function* addElements(newElements:Array):*void*
{
* this*.pendingElementsToAdd = newElements;
*this*.totalElementstoAdd = *this*.pendingElementsToAdd.length;
var newEventTimer:Timer = *new* Timer(TIME_BETWEEN_ADDS,
newElements.length);
newEventTimer.addEventListener(TimerEvent.TIMER,
onTimerAddNewElement);
newEventTimer.addEventListener(TimerEvent.TIMER_COMPLETE,
finishAddingElements);
newEventTimer.start();
}
*private* *function* onTimerAddNewElement(event:TimerEvent):*void*
{
*this*.loadingBar.setProgress(*this*.totalElementstoAdd
- *this*.pendingElementsToAdd.length, *this*.totalElementstoAdd);
*this*.loadingText.text = *Elements To Load: * + *this
*.pendingElementsToAdd.length;
event.updateAfterEvent();
*this*.loadingBar.invalidateDisplayList();
*this*.addChild(*this*.pendingElementsToAdd.pop());
}
RE: [flexcoders] Need effect for ViewStack w/o changing the view
when the content changes you can call
fadeIn.play([view1]);
if you want to make it fade out, then fade back in, make a new sequence effect
that contains two fade effects. then call it like above.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of joyh2002
Sent: Thu 3/4/2010 2:09 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Need effect for ViewStack w/o changing the view
Hi all,
I have a viewstack like this:
mx:ViewStack
mx:Canvas id=view1 hideEffect={fadeOut} showEffect={fadeIn} /
mx:Canvas id=view2 hideEffect={fadeOut} showEffect={fadeIn} /
/mx:ViewStack
The hideEffect and showEffect is triggered when I switch the views. How do I
make the same effect when I change the contect of view1 (without changing the
view from view2 to view1)? I'm already on view1, I change the content of view1,
and need the same effect to signal the user that there are changes to the
content. I don't want to create a new view.
Thanks,
Joy
RE: [flexcoders] Trouble with ProgressBar and manual updates.
callLater is a great suggestion, thank you. Unfortunately, was not
helpful in this case. Even delaying the adds by a callLater does not
allow the progressBar to update visually.
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On
Behalf Of Peeyush Tuli
Sent: Tuesday, March 02, 2010 10:18 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Trouble with ProgressBar and manual updates.
it might be that all the processing is too much to be displayed in the
same frame. So this might help you
http://jimmyflex.blogspot.com/2007/11/dont-forget-power-of-calllater.htm
l
~Peeyush
http://www.mds.asia
http://jimmyflex.blogspot.com/2007/11/dont-forget-power-of-calllater.htm
l
On Wed, Mar 3, 2010 at 6:53 AM, Christopher McArthur
cmcart...@riotgames.com wrote:
Using Flex3 in AIR standalone application.
I have a ton of children I need to add to a Canvas dynamically. When I
do this, it takes a long time. So I wanted to display a loading bar to
the user.
I create a Timer, and every time the timer ticks, I update the
loadingBar and I add the child. I also update a textField with the
loading progress as a debug tool.
What I find is that the textField _always_ updates correctly in
realtime, but USUALLY the progress bar does NOT update at all until the
entire sequence is finished. If I make the tick time long enough, then
the progress bar works, but this time seems very dependent on
performance of the individual machine.
My question is, how do I know what the lowest possible tick time I can
use to make the progress bar update correctly is? Why does it work with
the Text field just fine? Or is there a better pattern I could be using
to do this correctly?
As you can see from the code, I tried some things like
updateAfterEvent and invalidateDisplayList to see if I could get it
to update faster, but those did not work (unless I set the tick time
high).
code here:
private var pendingElementsToAdd:Array;
private var totalElementstoAdd:int;
private static const TIME_BETWEEN_ADDS:Number = 20;
private function addElements(newElements:Array):void
{
this.pendingElementsToAdd = newElements;
this.totalElementstoAdd = this.pendingElementsToAdd.length;
var newEventTimer:Timer = new Timer(TIME_BETWEEN_ADDS,
newElements.length);
newEventTimer.addEventListener(TimerEvent.TIMER,
onTimerAddNewElement);
newEventTimer.addEventListener(TimerEvent.TIMER_COMPLETE,
finishAddingElements);
newEventTimer.start();
}
private function onTimerAddNewElement(event:TimerEvent):void
{
this.loadingBar.setProgress(this.totalElementstoAdd -
this.pendingElementsToAdd.length, this.totalElementstoAdd);
this.loadingText.text = Elements To Load: +
this.pendingElementsToAdd.length;
event.updateAfterEvent();
this.loadingBar.invalidateDisplayList();
this.addChild(this.pendingElementsToAdd.pop());
}
RE: [flexcoders] Re: Does DataBinding to a function create a ChangeWatcher?
Thanks for the video, took a while to get through, but answered my
questions throughly.
I am going to forward it to the other Flex developers on my team I found
it so helpful. Now, going to try to find other lectures by Labriola ;0
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On
Behalf Of tntomek
Sent: Monday, March 01, 2010 12:09 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Does DataBinding to a function create a
ChangeWatcher?
Hi Chris,
Check this vid out:
http://tv.adobe.com/watch/360flex-conference/diving-in-the-data-binding-
waters-by-michael-labriola/
--- In flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com
, Christopher McArthur cmcart...@... wrote:
I am doing some performance/memory cleanup in my rather large
application and looking to reduce the number of eventListeners and
changeWatchers I have and was curious about this:
say I have some function
function myFunc():String;
that I data bind to an mx:Label's property label={myFunc()}
I know this is a softbinding that is only udpated once, but is a
ChangeWatcher created in this scenario?
What about this one
label={myFunc(this.myBindableVar)}
Is there now a ChangeWatcher on myBindableVar?
In general is it more efficient to use the
invalidateProperties/commitProperties pattern instead of dataBinding
when applicable, for the simple cases of binding to local properties?
-Christopher
image001.jpgimage002.jpg
[flexcoders] Trouble with ProgressBar and manual updates.
Using Flex3 in AIR standalone application.
I have a ton of children I need to add to a Canvas dynamically. When I
do this, it takes a long time. So I wanted to display a loading bar to
the user.
I create a Timer, and every time the timer ticks, I update the
loadingBar and I add the child. I also update a textField with the
loading progress as a debug tool.
What I find is that the textField _always_ updates correctly in
realtime, but USUALLY the progress bar does NOT update at all until the
entire sequence is finished. If I make the tick time long enough, then
the progress bar works, but this time seems very dependent on
performance of the individual machine.
My question is, how do I know what the lowest possible tick time I can
use to make the progress bar update correctly is? Why does it work with
the Text field just fine? Or is there a better pattern I could be using
to do this correctly?
As you can see from the code, I tried some things like
updateAfterEvent and invalidateDisplayList to see if I could get it
to update faster, but those did not work (unless I set the tick time
high).
code here:
private var pendingElementsToAdd:Array;
private var totalElementstoAdd:int;
private static const TIME_BETWEEN_ADDS:Number = 20;
private function addElements(newElements:Array):void
{
this.pendingElementsToAdd = newElements;
this.totalElementstoAdd = this.pendingElementsToAdd.length;
var newEventTimer:Timer = new Timer(TIME_BETWEEN_ADDS,
newElements.length);
newEventTimer.addEventListener(TimerEvent.TIMER,
onTimerAddNewElement);
newEventTimer.addEventListener(TimerEvent.TIMER_COMPLETE,
finishAddingElements);
newEventTimer.start();
}
private function onTimerAddNewElement(event:TimerEvent):void
{
this.loadingBar.setProgress(this.totalElementstoAdd -
this.pendingElementsToAdd.length, this.totalElementstoAdd);
this.loadingText.text = Elements To Load: +
this.pendingElementsToAdd.length;
event.updateAfterEvent();
this.loadingBar.invalidateDisplayList();
this.addChild(this.pendingElementsToAdd.pop());
}
[flexcoders] Does DataBinding to a function create a ChangeWatcher?
I am doing some performance/memory cleanup in my rather large
application and looking to reduce the number of eventListeners and
changeWatchers I have and was curious about this:
say I have some function
function myFunc():String;
that I data bind to an mx:Label's property label={myFunc()}
I know this is a softbinding that is only udpated once, but is a
ChangeWatcher created in this scenario?
What about this one
label={myFunc(this.myBindableVar)}
Is there now a ChangeWatcher on myBindableVar?
In general is it more efficient to use the
invalidateProperties/commitProperties pattern instead of dataBinding
when applicable, for the simple cases of binding to local properties?
-Christopher
[flexcoders] A loading progress bar with a WindowedApplication?
My AIR application is a standalone WindowedApplication. On startup, it does not have a loading bar. Looking thorugh many flex articles and example I see a lot of talk of the startup loading bar that works automatically with Flex, however all of these are about web applications. Does the WindowedApplication have one as well? If so can anyone point me in the right direction for how to activate it? -Christopher
RE: [flexcoders] A loading progress bar with a WindowedApplication?
Hmm This throws an NPE in WindowedApplication's override setVisible because this._nativeWindow is null. (however this.nativeWindow is valid). Will try experimenting in a smaller test project. From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Alex Harui Sent: Monday, March 01, 2010 2:34 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] A loading progress bar with a WindowedApplication? WindowedApplication's default behavior is to hide itself until the app is completely ready. If you want to see a progressbar, add the following to the WindowedApplication tag: preinitialize=visible=true On 3/1/10 9:18 AM, Christopher McArthur cmcart...@riotgames.com wrote: My AIR application is a standalone WindowedApplication. On startup, it does not have a loading bar. Looking thorugh many flex articles and example I see a lot of talk of the startup loading bar that works automatically with Flex, however all of these are about web applications. Does the WindowedApplication have one as well? If so can anyone point me in the right direction for how to activate it? -Christopher -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui
[flexcoders] A certain .swc is breaking all of my other .swc containers?!!?
I am using a flash component, exported into a .swc. These components are all containers, with content areas, and in the flex code I put dynamic images into the content area. This works great! But recently, this suddenly broke. Instead of rendering the content areas, it just renders a Fx symbol with a gray background. This is what the content area looks like in flash, but should always be invisible in Flex (not sure if I can attach images to show exactly what I mean on here?). So the weird thing was, the code doing this was never touched, and that swc was never changed. Finally tracked it down to reverting a completely unrelated, with no overlap, different .swc in the project. If this *different* .swc is compiled in, then it breaks ALL of the containers used in the other .swc. I examined it very closely for naming conflicts and there are none. I don't see any kind of error message anywhere (not sure where I would see it though). Ive even stripped the broken .swc completely clean and it still causes the problem. Any clues out there to what this could be? -Christopher
RE: [flexcoders] Re: How to know when a popup component is visible?
I was unable to find any way to do this either after a lot of experiment I finally gave up. A callLater after creationComplete, or any other of a host of events that it looks like you tried as well still happens before the popup is visible as you found. I ended up just doing a timer of about 1s after creation complete, which is annoying and hacky, but the only reliable solution I could find =( -ctm _ From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Richard Rodseth Sent: Monday, December 07, 2009 2:43 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] Re: How to know when a popup component is visible? Bump. Still trying to find a way to detect that a popup is visible. On Mon, Nov 30, 2009 at 9:55 AM, Richard Rodseth rrods...@gmail.com wrote: Yes, I have tried using callLater(). I was hoping there was an event I could tap into that got dispatched once the window is visible. On Mon, Nov 30, 2009 at 9:21 AM, Chris zomgfore...@gmail.com wrote: Everything is Flash is mostly single-threaded. You'll need to wait until after the window is visible to display start the encoding. Have you attempted using callLater() to start the encoding of the png a frame after the event is dispatched? On Mon, Nov 30, 2009 at 9:47 AM, Richard Rodseth rrods...@gmail.com wrote: This message hasn't showed up yet. Awaiting moderation? Any ideas? On Wed, Nov 25, 2009 at 10:40 AM, Richard Rodseth rrods...@gmail.com wrote: I had a thread going here about how to show progress before a potentially long-running but synchronous operation (in my case encoding a DisplayObject as a PNG or JPEG to add to an AlivePDF PDF. Since I can't seem to force a busy cursor (ironic), one of the suggestions was to pop up a window before starting the encoding. But I've tried listening to creationComplete, render, show, addedToStage etc. etc., and in all cases the popup doesn't appear until the encoding is complete. I was unable to find any event dispatched by the PopupManager either. Help!
RE: [flexcoders] TitleList Sort Data - Animation
I had the exact problem you did, and also someone asked a similiar question
last week and I responded, I would check that response as it applies here as
well
Basically, you are out of luck. ItemChangeEffect does not work with sort or
filter. You will need to create your own custom component. Adobe has an example
of this, the code is pretty special case, but might help you get started
http://www.adobe.com/devnet/flex/samples/flex_store/
___
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf
Of cbs1918
Sent: Tuesday, December 01, 2009 4:51 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] TitleList Sort Data - Animation
I want to have a TitleList with several elements. Then I want to have
components to filter the data, when the data changes the items in the TitleList
should animate into place. When I enable drag/drop on the TitleList and move
elements the animation behaves as expected. However, when I sort/change the
array the animation does not happen. After sorting the array I've found that if
I call invalidateList() on the TitleList then the items update based on the new
order of the array but they just appear in their new position they do not
animate. What am I doing wrong or need to update? I've built a scaled down
version and provided the code below.
Sample.mxml
---
?xml version=1.0 encoding=utf-8?
mx:Application xmlns:mx=http://www.adobe.com/2006/mxml;
applicationComplete=initApp();
mx:Script
![CDATA[
[Bindable]
protected var _arrData:Array;
protected function initApp():void {
_arrData = new Array();
_arrData.push( new SampleDataModel(Item 1) );
_arrData.push( new SampleDataModel(Item 2) );
_arrData.push( new SampleDataModel(Item 3) );
_arrData.push( new SampleDataModel(Item 4) );
_arrData.push( new SampleDataModel(Item 5) );
_arrData.push( new SampleDataModel(Item 6) );
_arrData.push( new SampleDataModel(Item 7) );
_arrData.push( new SampleDataModel(Item 8) );
}
protected function sortItems():void {
_arrData.push(_arrData.shift());
titleLst.invalidateList();
}
]]
/mx:Script
mx:Button label=Sort Items click=sortItems(); /
mx:TileList id=titleLst dataProvider={_arrData} rowCount=2
columnCount=2 itemRenderer=SampleDisplayItem width=250 height=100
dragEnabled=true dragMoveEnabled=true dropEnabled=true
mx:itemsChangeEffect
mx:DefaultTileListEffect fadeOutDuration=250 fadeInDuration=350
moveDuration=500 /
/mx:itemsChangeEffect
/mx:TileList
/mx:Application
SampleDataModel.as
--
package
{
import flash.events.EventDispatcher;
[Bindable]
public class SampleDataModel extends EventDispatcher
{
public var title:String = ;
public function SampleDataModel(...rest)
{
if (rest.length 0) {
title = rest[0];
}
}
}
}
SampleDisplayItem.mxml
--
?xml version=1.0 encoding=utf-8?
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml; width=125 height=100
mx:Label text={data.title} /
/mx:Canvas
RE: [flexcoders] I've got a [Bindable] boolean var - can I setup a eventlistener on it?
assuming your in the same class as changeme: private var changemeWatcher:ChangeWatcher; this.changemeWatcher = ChangeWatcher.watch(this, changeme, changemeChangedFunction); this function will get called every time it changes: private function changemeChangedFunction(event:PropertyChangeEvent):void when you are done, make sure to uregister it with this.changemeWatcher.unwatch(); __ From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of luvfotography Sent: Friday, November 20, 2009 3:02 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] I've got a [Bindable] boolean var - can I setup a eventlistener on it? I've declared a [Bindable] private var changeme:Boolean; Is there a way to execute a function whenever this var changes? thanks,
RE: [flexcoders] triggering itemsChangeEffect when using filters on an ArrayCollection's
So I investigated this a lot myself a while ago, and you are pretty much out of luck. itemsChangeEffect does not work with refresh. You can fake it a bit, by instead of doing a sort or a filter, manually adding/removing/moving elements one at a time in the list, which will trigger the itemsChangeEffect. Unfortunately, this only works for very simple changes, for complex changes the itemEffect will get confused and do the wrong thing. For something like sorting a high scores list with a filter, this will probably NOT work. To solve my very similar problem I had to create a brand new custom component that did this. I basically recreated the features of List that I needed and implemented the animation of them moving around using Move/Fade. The adobe sample that has a similar feature you are requesting also does not use itemChangeEffect, but instead implements a custom component like I did. http://www.adobe.com/devnet/flex/samples/flex_store/ as a side note, I was using itemChangeEffect a lot throughout my ap for the simpler lists, but I ended up encountering so many bugs and problems with it that I have now completely removed it from my application. Bummer, but hopefully they work better in Gumbo when I move to that. -ctm _ From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of fatmanchan2009 Sent: Friday, November 20, 2009 9:12 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] triggering itemsChangeEffect when using filters on an ArrayCollection's Hey Guys So what im basically doing is creating a List Component of players scores. The dataprovider is type ArrayCollection, and i have applied a sort filter on the collection so it sorts by players score, but when the filter is applied and the order of the collection changes, the itemsChangeEffect doesnt get triggered, so no effects occur. So thats the main problem, does anyone have a clue on how to go around this, or a fix for it? Cheers Regards SCHAN (fatmanchan2009)
RE: [flexcoders] dynamically show multiple containers?
Ive done something like this before. Here is how I might try to do it: -First I would create a class called CityData, it would have a stateName:String, and an cityNames:ArrayColleciton of strings. -I would then create an ArrayCollection of cityData and fill it will all of my data. -I would then create filters for cityData using filterFunction and set the filterFuntion based on what checkboxes were checked, to filter in and out the cities needed. -I would update the filterFunction and refresh cityData based on changed events from the checkboxes. -then I would create an mx:List with the cityData as the dataprovider and a custom itemRenderer. -This itemrenderer would have a label databound to the data.stateName, -the item render would also have an mx:List with its dataprovider databound to data. cityNames. does that make sense? You could even generate the checkbox list by using a List, with its dataprovider set to an unfiltered copy of cityData, with an itemRender that displays a checkbox (with the label of data.stateName). -ctm From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of coder3 Sent: Friday, November 13, 2009 2:30 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] dynamically show multiple containers? HI All, There are ways to show different Flex containers, for examples, states or viewstacks. my problems, i have multiple combinations, for example, i need to show a list of cities based on a list of check boxes of states, say i have a list of AZ, CA, WA, if i select all, it shows major cities of three states, then if i unselect CA, it only shows cities of AZ and WA, then if i select CA and unselect WA, it shows cities of AZ and CA, what's the best way to do it? thanks! C -- View this message in context: http://old.nabble.com/dynamically-show-multiple-containers--tp26344571p2 6344571.html Sent from the FlexCoders mailing list archive at Nabble.com. image001.jpgimage002.jpg
RE: [flexcoders] Why never create an item renderer?
Can anyone recommend any good reading material on this? Im having some memory issues with my itemrenderers lately ;) From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Alex Harui Sent: Thursday, September 03, 2009 11:53 PM To: flexcoders@yahoogroups.com Subject: RE: [flexcoders] Why never create an item renderer? It is good enough if you shipped it and got paid J If you want to post the code for a renderer, we can offer opinions on the pros and cons of your implementation. It might be good education for many. I don't have time to judge dozens of renderers so we can just start with one of yours and discuss it. There is usually a trade-off of ease of programming vs performance and memory optimization. The smaller and faster you want it to be, the more work you have to do. If you're only gonna have 7 renderers on screen, it doesn't matter as much as if you are creating DataGrid renderers for a 20x20 grid. Alex Harui Flex SDK Developer Adobe Systems Inc. http://www.adobe.com/ Blog: http://blogs.adobe.com/aharui From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Wesley Acheson Sent: Thursday, September 03, 2009 3:29 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] Why never create an item renderer? I've created a few. I've recreated a few working ones because I want to understand the framework better. I guess my problem is how do I know if the item renderers i've created are Correct. I've far too often seen programming as a religion. I've just as often seen people just make things work. I can't stand by either of these sometimes you need things to just work, however if you don't worry about practices you've got unmaintainable code. So how do I know if what I've written is good enough. Regards, Wesley Acheson On Thu, Sep 3, 2009 at 9:38 PM, Tracy Spratt tr...@nts3rd.com wrote: It is not always given as advice. I give that when I see that a developer does not have his head around the issues. It is usually quite obvious when that is the case. I think it is better advice than RTFM. An example will get a newbie further faster. When that advice does not apply to you, you will know it. Tracy Spratt, Lariat Services, development services available From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Wesley Acheson Sent: Thursday, September 03, 2009 2:36 PM To: flexcoders Subject: [flexcoders] Why never create an item renderer? I've seen this adivse a lot reciently on the list. Don't create an item renderer modify an existing example. I don't really understand why. I mean their not that difficult to get your head arround so long as you reset all internal variables that need to be reset. Why is this always given as advise? Regards, Wesley Acheson image001.jpgimage002.jpg
