Actionscript 3 :: RadioButtonGroup With Each RadioButton Added In Components?
May 25, 2010
Working in Flex 3, I have a series of components being rendered on a canvas, each of which should represent a single potential selection, ideally in a RadioButtonGroup. So in my parent canvas I am defining the RadioButtonGroup, and each component provides a single RadioButton. However, this doesn't seem to work.
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So my guess was that at this point if, say, four of these components were added, the radio buttons would behave in mutually exclusive fashion and I'd be able to access myRadioButtonGroup.selectedValue to get the current selection. However, it doesn't seem to work that way. Is what I'm trying to do even possible, or have I maybe just missed something?
I have a UI component that, for various reasons, I have to construct programatically. The component is a table of radio buttons grouped by column.Right now, I'm constructing the column groups like so:
private function createGroupsForItemList(items: XMLList): void { for each (var item: XML in items) { var rbGroup: RadioButtonGroup = new RadioButtonGroup(); groups[item.@level.toString()] = rbGroup; } }
I'm trying to associate the RadioButton instances with the column groups like so:
private function createValueControl(item: XML): UIComponent { var control: RadioButton = new RadioButton(); control.label = "";
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I can see in the debugger that the control has an association to the group:
control.group == groups[item.@level.toString()]
However, I can see equally that the group does not know anything about the control:
group.radioButtons.length == 0
I imagine that this is because the setter for group in RadioButton is a dumb setter; all it does is copy to the variable, which doesn't do the magic that groupName does. However, I can't seem to find the value I should use to set the RadioButton.groupName property correctly.So, in short, I'm stumped on how to get these bits to talk to each other. How do I do this?
-- EDIT -- It turns out that I can have the groups created and associated simply by setting the groupName property, but I can't get at the group to set up a selection listener; the group is NULL immediately after the setting process, which means that the second line below throws the Flex equivalent of an NPE:
I am created a dynamically adding a VBox, that contains two images. Into a Custom Component that is derived from UIComponent. The problem is the Vbox that contains the two image is only a really tiny size. I would like the VBox stretch to the size of the two images. This is how I am creating the Vbox....
I'm instantiating a group of RadioButton components into a Sprite and then later adding it to the display list. When the latter occurs, I can visibly see the font of the RadioButtons' labels changing from a serif to sansserif—but I have NO code to that effect anywhere. This occurs long after the components are actually instantiated, when they (via their parents) are added to the displaylist.
In Question_UI.answersContainer.answer:
answerUI = new RadioButton(); answerUI.group = rbg; answerUI.label = text;
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I've triple-checked the obvious, but there's NO code regarding the font of the label at all. It seems to only have to do with being added to the displaylist.
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I'm making a simple quiz. I dynamically create Sprites and on these Sprites I add dynamically created TextFields which take text from an XML file. The TextFields contain the questions. Now I want to add a RadioButtonGroup to each Sprite but every time I try to addChild I get the message telling me I cant coerce the RadioButtonGroup into a display object.
I have an AC with several questions and assoicated answers. These must be shown in a DG, and the idea is that the rows and colums of the DG are bound to the AC. For example, if the answer to question1 is Yes, the Yes-button must be true, and both the others must be false (as in normal radiobuttongroup behaviour). But when I change a button by clicking it, the actions datafield of the AC should change accordingly. Am I clear enough here?
It is ment for dynamic questionnaires.
<?xml version = "1.0"?> <mx:Application xmlns:mx = "http://www.adobe.com/2006/mxml"> <mx:Script>
I have a Validator on a RadioButtonGroup of 2 Radios. There's a checkbox above the RadioButtonGroup whereby if checkbox.Selected, then the Radios are enabled. So the Validator is required if the checkbox.Selected. So far so good. The problem is once a radio gets selected, the RadioButtonGroup selectedValue gets set. When I uncheck the checkbox I set the radios to not selected, but the selectedValue on the RadioButtonGroup doesn't get reset -- it hold the previous value. I tried setting it to null but no luck.
Therefore if I check the checkbox again and submit, the Validator see a selectedValue on the RadioButtonGroup. Even though none of the radios are selected, validation passes. How can I reset the RadioButtonGroup to its initial state when I uncheck the CheckBox? I looked at the underlying code for RadioButtonGroup.selectedValue = null, and what it does is look for a radio in the with the parameter value. If it doesn't find it nothing gets set.
EDIT2: Ok Both problems solved since I just found out how to randomize the array It took me three days to solve these problems lol At the third day I posted here but I got with the solutions by myself EDIT: lol ok Silly me.. I've just found out how to do that... Just adding a n in the answer texts solves this issue... I feel silly now =P ... However, I got another doubt, since I need to randomize the questions... Let's say I'd need 20 questions in total (with its respective answers). From those, I only need 10 to show... Ok, no problem here. The thing is, from those 20 possible questions, I need any 10 to appear randomly. I still can't found out how to randomize the items inside an array.
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but i cant use this code in mmxl components how i can use public class DialogTitle extends HBox implements IBindingClient in mmxl component code,what are the way to use it,sorry i am newbie if it is silly question
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however I receive the following errors why?
**Error** Scene=Scene 1, layer=action, frame=1:Line 4: The class or interface 'fl.controls.RadioButtonGroup' could not be loaded. var myradioGroup:RadioButtonGroup=new RadioButtonGroup("Group 1"); **Error** Scene=Scene 1, layer=action, frame=1:Line 13: The class or interface 'MouseEvent' could not be loaded. function showResult(event:MouseEvent):void { Total ActionScript Errors: 2 Reported Errors: 2
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var radioButton:RadioButton = new RadioButton(); radioButton.groupName = "source"; radioButton.label = "label";
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I first created these radiobuttons in mxml and it worked fine, but now that the radiobuttons need to be dynamically generated in actionscript it doesnt work.
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