Flex :: Web Application Gets Progressively Slower And Freezes
Aug 26, 2010
I have a Flex web application where I am visualizing data (for different countries) in the form of charts. The data is in the form of CSV files. There are individual files for individual charts i.e. one file has all data pertaining to one chart for all countries.I have a left navigation menu that allows one to see data on a country by country basis. As I view more and more countries, the web application becomes progressively slower till it freezes completely. The problem goes away if I refresh the browser and empty the cache.I am using the URLLoader class in flex to read the CSV data into a string and then I am parsing the string to generate the charts.I realize this is happening because more and more data is somehow accumulating in the browser.
I have a NavigatorContent which is displayed when the user selects an item in a DataGrid. This NavigatorContent contains a form and an accordion displaying the related objects.
When the user presses the Save button in the NavigatorContent the form and the children should be saved to the database by calling the server through BlazeDS:
saveObjectToDB() { //Map the form values to the object object.field1 = object_field1.text;
[Code]....
The object that i pass to the accordion children is public and [Bindable] in the NavigatorContent and in the accordion children and is initially passed from the main DataGrid. May this be a problem relating to this issue?
I have built an application in flash, it is rather a large application that runs pretty smoothly, however it is a long list of graphs that run further than the application window so I use a vertical scrollbar and a mask to display them. The problem is everything becomes choppy the further you scroll down, any Tweens or movement and the framerate in general just appears to be much much lower.
When you get to the bottom it is unbearable although there is the same amount of movieclips and same amount of detail throughout the scroll, so I don't see why there should be this massive performance hit for going down a bit.
I'm trying to send about 1 MB of binary data to server via URLLoader. But when I call method load of this class, my application hangs for about 1-1.5 seconds, then uploading runs normally.
I have a dashboard I created using Flash CS5 using CS5.5 and ActionScript 3.It seems that while this dashboard is running, the FPS gets slower and slower over time (over several hours) I am thinking that I might have a memory leak but I am not sure how to find out.The project is a Flash Projector exe that loads 8 independent swfs.Each swf file essentially calls a web service and gets XML dataThey then dynamically create a bunch of TextFields,assigns an event listener (Event.ENTER_FRAME) and animates across the screen.When the TextField goes off the screen, I clean up the Text field by removing the EventListenerremoving the TextField and setting the TextField to null.
I was in the middle of developing a Flex applcation, and then I recently switched from Windows XP to Mac. My app is noticeably less responsive on my Mac than on Windows, and today I proved it's not a hardware issue, because I ran the App on my Mac and a Window XP on Virtual Box side by side, and IS much more responsive on XP. Things like repainting in response to window resizing, selecting/unselecting list items, scrolling up and down(I do have complicated list-item-renderers). Has anyone seen this as well? Is flex/flash just not as well supported on Mac? Or are there tweaks I can do to improve performance on the Mac?
i have a datagrid which grows in size depending on the result of a call to my db. The call to the database returns an object with 30+ values for each row. When the number of rows returned exceeds about 80-90 the datagrid renders odd. It displays the first 50-60 rows fine but then it displays blank rows and they even continue to display outside the border of the datagrid.what is happening? Im using mxml webservice to retrieve the data.
<mx:DataGrid dataProvider="{resultsData}" rowCount="{resultsData.length}" allowDragSelection="false" id = "confRoomLookupResults" width="948"
I'm creating a flex-based video player, using the FLVPlayback component (imported from Flash Pro CS3). I've reskinned all of the player controls and linked them in, and it's all working really well...However, if you try to seek beyond the point where the video has loaded (it's using progressive download), the video completely freezes. You can no longer pause, play, seek to somewhere else, or anything. I understand it can't actually play a point in the video that hasn't been downloaded, but the whole thing seems to just become unresponsive
I am having some weird trouble with getting my Flex Builder 4.5 environment set up and working. I am currently debugging with the stand alone version of the debugger, though I have the same problem using the versions for Firefox and/or Chrome. It works fine as long as I do not include any break points, if I do include break points (anywhere in the code) the debugger just goes unresponsive until I terminate the process from FB.
Drawing a simple line is easy - here's some sample code here from Kirupa:
[Code]....
My First Question is - how can you get it to show the drawing of the line - almost like an animation? This example instantly shows the line - I want the appearance that you're watching the line being drawn. Do you animate the lineTo variable and just keep refreshing? My Second Question is - can you do the same with a Bezier curve? In the end, I'm trying to draw random bezier lines from the left to the right in varying thicknesses and shapes (being able to see them being drawn from left to right).
So I built a videochat client that uses the adobe stratus protocol. Its very simple and just connects two users. However, after about a minute of video chatting the clients freeze and the browser crashes.what might have caused this? Is there some sort of cache that I need to clear every so often or a possible memory leak? I am not sure where to start
My air program freezes after running for some time without any error. The app will freeze (non responsive) and the debugger will claim the program has terminated with status 0.
The problem is that f4v files that are not playing progressively. they fully download before starting to play.Here's the code (newly modified without success) for a simple module that plays 3 different f4v's on radio buttons. In theory they should stream progressively in a flvplayback instance called qualtestplayer when a radio button is pushed. [code]...
I would like to load the content of a server side script progressively. This is the php script:
[Code]....
If you open the above script in your browser, it will print a new line every second. How could I program a similar behavior in AS3? What I want to do is load the script content progressively, in the same way as the browser does.
I am using a logo in .png form. I would like to have the logo very small at first and then get bigger frame by frame as it goes down the timeline. I created a keyframe on frame 1 and then another keyframe on frame 40. I then made the logo on frame 1 a small size, and I have the logo on frame 40 a large size. I am not sure how to tween them to produce the effect. It won't let me select the "shape" tween. I tried "classic" tween and motion tween (makes you convert to symbols), but no dice.
I have a custom FLVPLayback class that isn't progressively downloading - it's downloading the entire video into the browser cache before the FLVPlayback gets added to the display list. I'm really stumped. Anyone know what's up?The code:
My video files are not playing progressively off the host server. They do in simulate download: Here's the code for one simple module that plays 3 different f4v's on radio buttons. In theory they should stream progressively in a flvplayback instance called qualtestplayer when a radio button is pushed. But they fully download before starting to play.
I'm trying to develop a simple mxml Flex application to start Skype from the AIR/Flashplayer runtime. Is it possible to get back events from a native Windows application? In the simple example of Skype, the OS returns control to the Flex app when Skype exits. But what about native applications which have their own event model and wants to communicate with the Flex event model. For example, a Face detection system which shows "Hello" on a Flex app when the camera detects a face. Can this be done in the current Flex framework?
I am working on an Adobe AIR Application. The size on Application window is 800X600 and is contains border container and border container contains many controls. What I want is to if user re-sizes the application then that container should also be re-sized according to scale. i.e If user maximizes or minimizes the window then that border container should also be maximized or minimized respectively.
how can i delete storage directory instances or folder while uninstalling any air application. In my application when i first time run my application, application copy some data from application directory to application storage directory. now i want to delete all data and application directory folder also while uninstalling application.
I am doing that because when i launch any update then application is accessing old data which conflict with my application new features.
I'm new to flex. Now I'm writing an flex application. I plan to split my application into some MXML files(Application as the root tag). How can I switch from one mxml to another?BTW, what is the best practice for design large flex application? Just one MXML Application and many MXML component or many MXML Application?
I want to read xml data to a mxml application from a xml file on my filesystem. The example I found was for AIR,link2, link3. But I want to target the Flash Player runtime. If I use the the tag, I can do it; however the xml compiles into my swf. How can I retain the xml file in my release build?
i used systemManager.addEventListener in sub application...... it is working well....but when i load sub application into main application through swfloader it doesnot working..
I have a native (Obj-C, standard Xcode project) application and I'd like to integrate a partners iOS application (or specifically, it's functionality) into it as just another view in my application. The problem is that their application is a Flex/Air app. I really don't understand the Adobe compilation process on how it gets from a bunch of flex code down to an IPA. I don't see intermediate projects, shared objects, etc on the disk to produce that IPA. It looks like it doesn't rely on the Apple tool chain... as I understand it, you can produce the IPA on Windows as well. Is there any way to build that Flex app in such a way that I can import it into Xcode so I can link against it and use it as a library from within my application? While I specifically used iOS as an example since that is the most important platform, we'll want to apply this solution to our respective Android and Blackberry 6 apps as well.
I have an AIR application with a system tray icon. When clicked it shows and activates the app. This is working as expected when the app is hidden (docked), however if I select another application so my app is in the background clicking on the system tray icon does nothing.
Oddly I also have a contextual menu on the system tray icon, which has an option to restore, this calls the same event handler as ScreenMouseEvent.CLICK, yet works.
I expect it's something to do with the contextual menu changing the focus, perhaps it's a bug in how AIR works with the system tray, perhaps it's just something I'm missing. Would be good to know if that's the case.
I've been trying to launch a separate Air Application through my current Air Application.Both apps are compiled using the Adobe Air 2.0 SDK. The methods I have found so far involve passing the Publisher ID in addition to the Application ID, but I believe the Publisher ID became redundant past Air 1.5.3? Below is my current implementation whic seems to correctly ascertain the Air Application's version number, but when I try to launch it, nothing seems to happen.
private static var _air:Object; private static var _loader:Loader; private static var appID:String = "someOtherAirApplication";[code].....
I have changed the app-config.xml (app descriptor) on the application I am trying to load to allow browser invocation.The version number of the app descriptor of my application I am trying to load is "V1" which the versionDetectCallback seems to pickup. If this is the case I would expect to be able to launch it but this doesn't seem the case.
I want to load a flex application in mobile flex application and also i want it to interact with the parent application. Right now I am trying to load the swf with swfLoader in mobile app, but it gives me security error. And also should I want the parent application to be generic in terms of child application as in down the line if someone wants he can have another child application with same name run.
