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  • make reference to an empty query in flex

    - by Adam
    a bit of a dumb questions I'm sure I'm trying to allow user to set an item to be default. I've got a function that run a query to first find the current default item. Then runs a second query that unsets the current default item. Then a third query runs to set the new user selected item to be the default. This seem to work fine when a default item has been perviously selected, but when I try to set the default item initially I get the good old "Cannot access a property or method of a null object reference." error. This is because the first query that runs returns no items I'm sure. So I need to write an if statement that if the first query returns nothing to skip the second and go right to the third. The only problem is I can't make a reference to a null object. So how do I go about writing this statement. Thanks

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  • Why can't I get textWidth from my Text component?

    - by Adam
    var txtIt:Text = new Text(); txtIt.text = full_array[t][0]; txtIt.width = 700; txtIt.buttonMode = true; txtIt.mouseChildren = false; txtIt.selectable = false; txtIt.y = t * 30; trace(txtIt.textWidth); myCanvas.addChild(txtIt); Why can't i get the textWidth for the component? I can get it for textFields.

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  • Datagrid selects the wrong custom cell in my datagrid...

    - by Markus
    Hi everybody, I am working on a problem since a week soon, but I still couldn't make it work as expected. I have a DataGrid which has HBox with a CheckBox an a Label as itemRenderer (see Code below). When I tap in to the Cell the standard itemEditor pops up and lets you enter the content of the label. Thats the standard behavior. I works fine except for 2 problems: If I enter to much text, the horizontal srollbar pops up, and the cell is filled with that scrollbar. As you see I tried to set the horizontalScrollPolicy to off, but that doesnt work at all... I tried to do that for all the different elements, but the failure is still existent. When I have filled more than one row, there is an other mistake happening. If I tap on a row, the datagrid selects the one below that row. That's only if one line is already selected. If I tap outside the datagrid and then, tap at any row the itemEditor of the right row will show up... Is there anything now wright in the setup of my set data method? __ package components { import mx.containers.HBox; import mx.controls.CheckBox; import mx.controls.Label; public class ChoiceRenderer extends HBox { private var correctAnswer:CheckBox; private var choiceLabel:Label; public function ChoiceRenderer() { super(); paint(); } private function paint():void{ percentHeight = 100; percentWidth = 100; setStyle("horizontalScrollPolicy", "off"); super.setStyle("horizontalScrollPolicy", "off"); correctAnswer = new CheckBox; correctAnswer.setStyle("horizontalScrollPolicy", "off"); addChild(correctAnswer); choiceLabel = new Label; choiceLabel.setStyle("horizontalScrollPolicy", "off"); addChild(choiceLabel); } override public function set data(xmldata:Object):void{ if(xmldata.name() == "BackSide"){ var xmlText:Object = xmldata.TextElements.TextElement.(@position == position)[0]; super.data = xmlText; choiceLabel.text = xmlText.toString(); correctAnswer.selected = xmlText.@correct_answer; } } } Thanks in advance! Markus

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  • How to set skin at runtime in Flex 4

    - by Ben
    Hi, I have a bunch of custom controls based on a SkinnableContainer. When adding the control at design time, I can specify a skin by using the skinClass attribute on the tag. I need to add some of these elements during runtime, and I can't figure out how to specify the skinClass for my controls. eg. var something:CustomThing = new CustomThing(); /* mistery code here to attach the skin ? */ addElement(something); How do I do this? Thanks!

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  • Coldfusion returning typed objects / AMF remoting

    - by Chin
    Is the same possible in ColdFusion? Currently I am using .Net/Fluorine to return objects to the client. Whilst in testing I like to pass strings representing the select statement and the custom object I wish to have returned from my service. Fluorine has a class ASObject to which you can set the var 'typeName'; which works great. I am hoping that this is possible in Coldfusion. Does anyone know whether you can set the type of the returned object in a similar way. This is especially helpful with large collections as the flash player will convert them to a local object of the same name thus saving interating over the collection to convert the objects to a particular custom object. foreach (DataRow row in ds.Tables[0].Rows) { ASObject obj = new ASObject(); foreach (DataColumn col in ds.Tables[0].Columns) { obj.Add(col.ColumnName, row[col.ColumnName]); } obj.TypeName = pObjType; al.Add(obj); } Many thanks,

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  • Syntactical analysis with Flex/Bison part 2

    - by Imran
    Hallo, I need help in Lex/Yacc Programming. I wrote a compiler for a syntactical analysis for inputs of many statements. Now i have a special problem. In case of an Input the compiler gives the right output, which statement is uses, constant operator or a jmp instructor to which label, now i have to write so, if now a if statement comes, first the first command (before the else) must be give out when the assignment of the if is yes then it must jump to the end because the command after the else isnt needed, so after this jmp then the second command must be give out. I show it in an example maybe you understand what i mean. Input adr. Output if(x==0) 10 if(x==0) Wait 5 20 WAIT 5 else 30 JMP 50 Wait 1 40 WAIT 1 end 50 END like so. I have an idea, maybe i can do it whith a special if statement like IF exp jmp_stmt_end stmt_seq END when the if statement is given in the input the compiler has to recognize the end ofthe statement and like my jmp_stmt in my compiler ( you have to download the files from http://bitbucket.org/matrix/changed-tiny) only to jump to the end. I hope you understand my problem.thanks.

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  • AdvancedDataGrid LockedRowCount not working

    - by online19
    I am trying to lock the 1st row in my ADG. This 1st row is the SummaryRow. When I set the lockedRowCount property to 1, it still does not freeze the 1st row. I have tried with different numbers, but it is still not working. In fact, when I try to trace the value for lockedRowCount, it traces it as 0. Can anyone provide suggestion on how to do this with the lockedRowCount property or if you can provide me with another workaround, that'll be great. Thanks :)

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  • MessageBroker.getMessageBroker(null) getting null pointer Exception

    - by Shital
    I am creating Dynamic Destinations MessageBroker broker = MessageBroker.getMessageBroker(null); MessageService service = (MessageService) broker.getService("message-service"); MessageDestination destination = (MessageDestination) service.createDestination("Group1"); if (service.isStarted()) { destination.start(); } But I am getting Null Pointer Exception MessageBroker broker = MessageBroker.getMessageBroker(null); Can Anyone Help Me

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  • invalidateList(); in flex3.0

    - by Ankur Sharma
    please tell me what invalidateList(); function does? i have one line of code, in which this function is getting called on arraycollection object like dg.invalidateList(); where dg is the id of datagrid, dataprovider for this dg is colors which is an arraycollection?? plzz tell me wht the invalidateList() function is doin? thanx

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  • Flex 4 app with mate design question

    - by chchrist
    Hi all, I have a view with a DropDownList component and a DataGroup component. The dropdownlist has to be updated from a remote php object and on change to call another remote object service in order to update the datagroup's provider. So I am thinks to dispatch an event from my view and the in my EventMap to call the service and inject the result to the drop down. When the dropdown changes I'll dispatch another event and in the EventMap I'll call another service and I'll inject the result to the datagroup. Is there another more sophisticated way? Thanks in advance

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  • HBox Image as BorderSkin

    - by Maurits de Boer
    I've designed a pretty 6pixel border for an HBox. It's a .png file and I tried setting it as the border skin like so: HBox { border-skin: Embed('../graphics/skins/border.png'); } However, when I run the application, the image is used for the background instead of the border. How do I fix this?

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  • addchild not displaying content

    - by Rajeev
    In the following code i dont have any error but why is that the addchild(video); i.e, the the video captured by webcam is not displayed <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> <mx:Script> <![CDATA[ import org.com.figurew; import mx.controls.Button; import mx.controls.Alert; import flash.display.InteractiveObject; import flash.display.Sprite; import flash.media.*; import flash.net.*; public function addBody():void { var ret:Number = figurew.getInstance().getparam(); if( ret == 1) { Alert.show("Camera detected"); } if(ret == 0) { Alert.show("No camera detected"); } var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(30, 40); video.attachCamera(cam); addChild(video); } else { trace("No Camera Detected"); } } ]]> </mx:Script> <mx:Button label="Test camera" click="addBody();" x="99" y="116"/> </mx:Application > figurew.as package org.com { import flash.display.InteractiveObject; import flash.display.Sprite; import flash.media.*; import flash.net.*; public class figurew extends Sprite { public function figurew() { //getparam(); var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(300, 450); video.attachCamera(cam); addChild(video); } else { trace("No Camera Detected"); } } public function getparam():Number { var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(300, 450); video.attachCamera(cam); addChild(video); return 1; } else { return 0; trace("No Camera Detected"); } } private static var _instance:figurew = null; public static function getInstance():cldAS { if(_instance == null) { trace("No instance found"); _instance = new cldAS(); } return _instance; } } }

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  • How to keep track of objects for garbage collection

    - by Yman
    May I know what is the proper way to keep track of display objects created and hence allow me to remove it efficiently later, for garbage collection. For example: for(i=0; i<100; i++){ var dobj = new myClass(); //a sprite addChild(dobj); } From what i know, flash's garbage collection will only collect the objects without strong references and event listeners attached to it. Since the var dobj is strongly referenced to the new object created, I will have to "nullify" it too, am I correct? Should I create an array to keep track of all the objects created in the loop such as: var objectList:Array = new Array(); for(i=0; i<100; i++) { var dobj = new myClass(); //a sprite addChild(dobj); objectList.push(dobj); } //remove all children for each (var key in objectList) { removeChild(key as myClass); } Does this allow GC to collect it on sweep?

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  • How do I set the dataProvider for an <s:List> component to be an XML file?

    - by Matt Calthrop
    I've got the latest Beta of Adobe Flash Builder 4. I want to use a <s:List> component, and specify the dataProvider as being an XML file. However, after loads of research (including looking at doc links off labs.adobe.com), I still can't figure out how to do it. The XML file will look something like this: <?xml version="1.0" encoding="ISO-8859-1"?> <imageList> <image location="path/to/file1.jpg" /> <image location="path/to/file2.jpg" /> <image location="path/to/file3.jpg" /> </imageList>

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  • To implement a remote desktop sharing solution

    - by Cameigons
    Hi, I'm on planning/modeling phase to develop a remote desktop sharing solution, which must be web browser based. In other words: an user will be able to see and interact with someone's remote desktop using his web-browser. Everything the user who wants to share his desktop will need, besides his browser, is installing an add-in, which he's going to be prompted about when necessary. The add-in is required since (afaik) no browser technology allows desktop control from an app running within the browser alone. The add-in installation process must be as simple and transparent as possible to the user (similar to AdobeConnectNow, in case anyone's acquainted with it). The user can share his desktop with lots of people at the same time, but concede desktop control to only one of them at a time(makes no sense being otherwise). Project requirements: All technology employed must be open-source license compatible Both front ends are going to be in flash (browser) Must work on Linux, Windows XP(and later) and MacOSX. Must work at least with IE7(and later) and Firefox3.0(and later). At the very least, once the sharer's stream hits the server from where it'll be broadcast, hereon it must be broadcasted in flv (so I'm thinking whether to do the encoding at the client's machine (the one sharing the desktop) or send it in some other format to the server and encode it there). Performance and scalability are important: It must be able to handle hundreds of dozens of users(one desktop sharer, the rest viewers) We'll definitely be using red5. My doubts concern mostly implementing the desktop publisher side (add-in and streamer): 1) Are you aware of other projects that I could look into for ideas? (I'm aware of bigbluebutton.org and code.google.com/p/openmeetings) 2) Should I base myself on VNC ? 3) Bearing in mind the need to have it working cross-platform, what language should I go with? (My team is very used with java and I have some knowledge of C/C++, but anything goes really). 4) Any other advices are appreciated.

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  • How come drawing this line at (0,0) doesn't really draw it at (0,0)?

    - by George Edison
    I have this ActionScript code here: package { import flash.display.Sprite; import flash.display.LineScaleMode; import flash.display.CapsStyle; import flash.display.JointStyle; import flash.display.Shape; import flash.events.Event; public class Main extends Sprite { private var lines:Shape; public function Main():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point lines = new Shape(); addChild(lines); lines.graphics.clear(); lines.graphics.lineStyle(10, 0x000000); lines.graphics.moveTo(0, 0); lines.graphics.lineTo(stage.stageWidth, stage.stageHeight); } } } What I'm expecting this to do is to draw a line from one corner of the screen to the other... but that's not what it does. See here.

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  • [Adobe Air] Can I catch a mouseUp event of an mx:Window that did not fire hte mouseDown?

    - by Irene
    Hi, In an AIR application, I have one mx:TileList with several images. What I need to do is let the user drag and drop one of the images on the desktop, giving a feeling of a desktop widget. Firstly I tried to implement this using dragStart etc, but in the end I think it is easier to handle mouseDown and mouseUp on the TileList. In general the whole setup works as desired. When a mouseDown is detected on the TileList, I create a transparent mx:Window containing the corresponding image, and call the startMove() on the Window to simulate a dragging behavior. If I release the mouse, the Window stops moving as desired. My problem is that now I want some visual feedback during dragging. It works while the Window is moving, however I can't find a way to stop it when the user releases the mouse. The mouseUp is not fired from the TileList, nor from the s:WindowedApplication. I also tried to add a listener to the Window itself, but still with no luck. Some code: private function onMouseDown(e:MouseEvent):void { trace ("down " + e.target); if (e.target is TileListItemRenderer) { // first create a dragWindow dragWindow.startGlow(); // then show some visual feedback dragWindow.moveWindow(e); // and start dragging } } private function onMouseUp(e:MouseEvent):void { trace("up " + e.target); dragWindow.stopGlow(); // <--------- Not called! } <mx:TileList id="photoTileList" mouseDown="onMouseDown(event)" mouseUp="onMouseUp(event)">

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  • Resizing a container when child's visibility is changed?

    - by deux11
    When I set the visible property to false for a child in a container, how can I get the container to resize? In the example bellow, when clicking on "Toggle", "containerB" is hidden, but the main container's scrollable area is not resized. (I do not want to scroll through a lot of empty space.) <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Script> <![CDATA[ public function toggle():void { containerB.visible = !containerB.visible; } ]]> </mx:Script> <mx:VBox height="300" width="200" horizontalAlign="center"> <mx:Button label="Toggle" click="toggle()" width="200"/> <mx:VBox id="containerA" height="400" width="150" horizontalAlign="center"> <mx:Button label="A" height="400" width="100"/> </mx:VBox> <mx:VBox id="containerB" height="400" width="150" horizontalAlign="center"> <mx:Button label="B" height="400" width="100"/> </mx:VBox> </mx:VBox>

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  • FileReference.save() duplicates ByteArray

    - by bartekb
    Hi, I've encountered a memory problem using FileReference.save(). My Flash application generates of a lot of data in real-time and needs to save this data to a local file. As I understand, Flash 10 (as opposed to AIR) does not support streaming to a file. But, what's even worse is that FileReference.save() duplicates all the data before saving it. I was looking for a workaround to this doubled memory usage and thought about the following approach: What if I pass a custom subclass of ByteArray as an argument to FileReference.save(), where this ByteArray subclass would override all read*() methods. The overridden read*() methods would wait for a piece of data to be generated by my application, return this piece of data and immediately remove it from the memory. I know how much data will be generated, so I could also override length/bytesAvailable methods. Would it be possible? Could you give me some hint how to do it? I've created a subclass of ByteArray, registered an alias for it, passed an instance of this subclass to FileReference.save(), but somehow FileReference.save() seems to treat it just as it was a ByteArray instance and doesn't call any of my overridden methods... Thanks a lot for any help!

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  • How to create an object from 2 arrays?

    - by Ole Jak
    So I hava array Links and array Params with same langth N So what I need is to create an object where for each link from Links I will be able to see param from Params And than for example to be abble to call something like for each( item in object) if (item.param == "some value") { // some code } else... How to do such thing (Code exaMple, please)

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  • How to eat HTML tags?

    - by Lost_in_code
    Is there any function that converts <a href="test.php"/> to &lt; href=&quot;test.php&quot;/&gt; It would be helpful if all html characters were converted in the similar manner. Is there a function or library to do this?

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