Flex :: Multiple Asynchronous Calls To Populate An Object?
Aug 28, 2010
I'm developing a Flex application and am having some trouble working with asynchronous calls. This is what I would like to be able do:
[Bindable] var fooTypes : ArrayCollection();
for each (var fooType : FooType in getFooTypes()) {
fooType.fooCount = getFooCountForType(fooType);[code]....
The issue I'm running into is that both getFooTypes and getFooCountForType are asynchronous calls to a web service. I understand how to populate fooTypes by setting a Responder and using ResultEvent, but how can I call another service using the result?
In one of our project we are using flex for front end, blazeds/java in the backend. Its an existing code where services are prewritten. I have to make calls to 3 services in the backend (basically 3 remote objects) and get their result and store the result in an object and show the data of this object in a view. Now in front end we are using Flex and Parsley Framework. I was thinking of the following approaches.
1) Making commands for each service call and storing the result in a shared object (model) and then displaying this model in the view. In this approach the problem is some services are needed in some other web pages, but they donot need the same model. How should i handle this scenario ? Should i make a asynchronous remote call and fetch the result and then again dispatch and event with the event object storing the result.
2) Making a service call , wait for the result then make another call and wait for the result and then make other call, not sure if this is the right way ?
I'm on Flash Builder 4.5 and I'm using remote object with amfphp and when I call two method (method1 and method2) at the same time the response of method2 always arrives after method1's response even though method2 is much more faster to return the result.re's the scenario:I set a remote object which refers to a remote php class "Newletter" which contains the sendNewsletter and getProgress methods.Here's the code:-sendNewsletter() reads the email archive and send the newsletter. After each email has sent it writes a log into the database.-getProgress() reads the log wrote by sendNewsletter, counts how many email have been sent, compares it with the total number of the email that have to be sent and return the progress percentageFrom the flex interface the users select a Newsletter to be sent and click on a "send" button which calls a function that calls the sendNewsletter() and then instantiate a loop of calls to getProgress (as you can see when getProgress returns something it calls the setProgress which updates a progress bar and calls getProgress again until the progress percentage reach 100%.
So right after I call sendNewsletter() I call getProgress() on the same remoteClass().sendNewsletter() can take several minutes to complete (in my tests for sending 4 email it takes about 4 seconds so I think that sending thousands of email will take much more!!) and the trouble I'm encountering here is that getProgress() result arrives only after sendNewsletter() concludes its execution while what I would like to achieve is:
I have to populate an Advanced Data Grid which have the following fields: Continent->State->Society-->Actual Value-->Estimate Value I want to simulate a financial market so i have to change some of the values by asynchronous request from an HTTPService; If necessary i'll post the .as file, but it is generated automatically by Flex Builder.
Here's the code of the client side Flex/Air application:
Is there a way to have a synchronous call to a URL to retrieve the HTML code? If not, is it possible to turn an asynchronous call into a synchronous one using some trick? I can't believe Adobe wouldn't implement this option. I tried looping until the result is back but then the status function never fires making my loop infinite.
ranting.turn("ON");
I'm a ColdFusion developer and recently started working on a project in Flex. I am getting more and more frustrated with AS and Flex lately. It seems that whatever I'm trying to do is either really hard or impossible while it usually can be done with one line of code in ColdFusion. I'm still learning these languages and I'm sure my lack of knowledge is the reason but for some reason I can't get ahead with my project. It looks like the learning curve is much steeper than it should be.
ranting.turn("OFF");
Anyways, here's my code for testing this functionality. The main application file looks like this:
This works OK except the function returns false before the HTTP call returns its result. If I un-comment the while loop the onStatus function will never be called and therefore end up with an infinite loop. Not sure why this happens.
I have a flash site that calls a JavaScript function to track events inside of the application, the _gaq is already implemented in the section of the html and it works perfectly fine with one account:
function customTracker(clickEventName) { _gaq.push (["_trackPageview", clickEventName]); }
but now my customer wants to include special events from 3rd party companies and needs these to track into a different GA account. Before I try this out on the live server I wanted to ask if this would work:
function customTracker(clickEventName) { _gaq.push(["_setAccount", "UA-XXXXXXXXX-X"]); // the regular account _gaq.push (["_trackPageview", clickEventName]);
I have a web service written in ColdFusion. In this web service, there are two functions; one is to return all the questions in a quiz and the other one is to return all the answer selections to the questions in a quiz.
[Bindable] private var questionArray:ArrayCollection; private var cfquiz:RemoteObject;
[code]....
I have the codes above. loadQuestions is called at creationComplete to retrieve the questions. Things are working fine. What I want to do is to call another function within the same web service, returnAnswers, to return the answer options for a question. Since I have cfquiz associated to the web service already, I was using cfquiz to call returnAnswers. However, there is an event listener associated to cfquiz already, resultHandler is being called when returnAnswers comes back with the results.is it possible to check which function returns the results within resultHandler? If so, how? And second, what is the best way to handle calls to multiple functions within the same web service?
If I have one parent class that instantiates 5-10 different child classes, each of which need to load multiple assets etc, how can I check within that parent class to make sure all of the 5-10 children are loaded & ready to go before telling the program to continue?
The tricky part is that the exact number of those 5-10 classes that are instantiated is determined at runtime, so I can never be certain which I should be waiting on and which not to be waiting on. And just to be clear, these are different modules of sorts, not multiple instances of the same exact class.
I have created a client with Flex Builder which works in a browser but also in an Air windowed application. I must connect it to a server and it has to do asynchronous request related to changing data of the server.Because of the too much expensive cost of LiveCycleDS license, I was looking for other ways, maybe open source and i found the following solutions:
Adobe BlazeDS Granite Data Services WebORB Community Edition
I want to ask you which is the easy way to create the solution described above, expecially i want to use J2EE application server type.
Are there any known issues (and workarounds) involving multiple calls toExternalInterface.call in ActionScript 2.0?I have 3 functions, each of which calls an external JavaScript function. These 3 functions run nearly back-to-back-to-back. The first time I load the page containing my Flash movie in a browser, I see the effects of all 3 JavaScript functions, as expected. However, once I begin reloading the page a few times, I begin to randomly see the effects of only 1, 2, or 3 of the JavaScript functions. Clearing the browser cache seems to "reset" this cycle, guaranteeing all 3 calls to work again successfully.
Thats the schematic of my the specific area of my program thats causing me trouble. In output i get "C Called" only. I'm guessing that on the return of the super() call to A() then it jumps back to C(), but id expect that the call stack could handle multiple super calls.
I want to download a file in flex. Here is my desired flow User clicks "view" Code goes to backend and get the file as an array of bytes bytes sent from java to flex via a callback flex then opens dialog and user decides where to save the file Unfortunately the last part is not on a user event but on the callback from the server. When I call new FileReference().save(...) it tells me this. An alternative could be
User clicks "view" Flex shows user the dialog and user chooses where to save file Flex goes to backend requesting bytes of file bytes sent to flex and data is saved. For this approach I am unsure how I can make the save asynchronous from the dialog. I want the user to save a file but the data but come from an array of bytes from the backend
I am trying to make sprite sheets for rotation of DisplayObjects, and it seems that the gotoAndStop() calls are not working.Here's an example of what's going on:
I'm trying to call AMFPHP two times on a single ActionScript method and what happen is that only the first call succeed. The second one doesn't return an error, doesn't alertsanything, it is more likely that it doesn't even happens and I'm not sure why.Here is an example:
public function editSomething():void{ if(dgChild.selectedIndex == -1){ Alert.show("You need to select a register in order to edit it.");
I have a gallery page that has a UILoader Two buttons (back/next) and a Dynamic Text box.
When UILoader pulls in the new image i want to populate the text box with the description of that image. I have got the code working to pull the external text in the first time you go to the page but cannot figure out what to do to make it call the function and pass the right argument every time you click the next or back button.
Attached is my code.
var imageNumber = 1; var textNumber = 1; var loader:URLLoader = new URLLoader(new URLRequest("images/description"+textNumber+".txt"));
I'm currently using AMFPHP 1.9 to make a simple flash game which uses a game server.Sometimes, I get this error (BadVersion) when there are simultaneous calls to the server.I've searched the web for some of the answers to this problem, and it seems they were answered back in 2004.Is there an updated version of how to solve this problem?I tried to change the globals.php parameters to use absolute path, like performing the below:
//$servicesPath = "services/"; //change to $servicesPath = "/httpdocs/Flash/AMFPHP/services/";
I have saved out an object using JSON.encode to a text file, is it possible to then create a new MovieClip and populate it with all of the properties from the saved file? If so how would it be done, or is there a better way
is it possible to determining what object calls a function based on an event listener? for example, i have 2 buttons on stage that call the same function when they are clicked. i'd like the function to determine which button was the sender.
I'm trying to setup a DataGrid that contains a column of combo boxes. The values of the combo boxes are defined by data specific to that row. I cannot get this to work though, I'm asking for a solution to this, either fixing what I have below or a recommendation on a different way.One of the columns of my DataGrid has an object derived from a ComboBox for an ItemEditor. The itemEditor is set like this:
In my Flex app, I use one remote object and multiple destinations. Is that a bad idea? It seems to be working just fine except for the one or two fringe cases:It's bad design, but we use the same method name on two different destinations and they seem to conflict when they're called at the same time. Logging errors show a method assigned to one destination as being associated with another.
I have a component called a TableDataViewer that contains the following pieces of data and their associated set functions:[code]This component is nested in another component as follows:[code]Looking at the trace in the logs, the call to set table is coming before the call to set dataSetLoader. Which is a real shame because set table() needs dataSetLoader to already be set in order to call its load() function.So my question is, is there a way to enforce an order on the calls to the set functions when declaring a component?
When Flex application make an asynchronus HTTP request, does it add a special header to the request, like some JavaScript framework does? Something that indicates whether this request is an AJAX call/not.I just want my server side code to return different response format, depending on whether the request is made from browser/flex.
I am getting return type as array from PHP. When I populate in my datagrid, the values are not coming... var appSes:Array = event.result as Array dg.dataProvider = appSes;
I am getting the values, from PHP is there anything other than this i have to do. <local:CheckBoxDataGrid id="dg" allowMultipleSelection="true" x="118" y="142" width="507"> <local:columns> <mx:DataGridColumn dataField="firstName" headerText=" " width="20" sortable="false" itemRenderer="CheckBoxRenderer" > [Code] .....
I want to load data from a external XML file, using a HTTPService, and on the ResultEvent of the same HTTPService i want him to populate a ArrayCollection with the data from the XML.
I think a ArrayCollection is the ideal for this XML.
