ActionScript 3.0 :: #1009 - Error Throws When Doing Multi Select On Tree Nodes
Feb 14, 2011whenever i try to select multiple nodes in tree component i'm getting this error. i want to know what might be the cause for this error.
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whenever i try to select multiple nodes in tree component i'm getting this error. i want to know what might be the cause for this error.
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I have a problem with an application that uses RobotLegs in a Flex module. I finally managed to load my module successfully, but when I try to add this line of code in the module view's Mediator:view.addElementAt(applicationContainer,0);
I get this error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.core::UIComponent/getStyle()
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For those unfamiliar with tree structures, tree structures are usually dynamic lists where every node has a pointer to two other nodes. They are arranged so it makes for faster searching and stuff and are very useful in programming languages that offer direct access to heap memory. Although I don't know if there would be benefits of making tree structures in AS would be of any help but I decided to have a go at it anyway. Since there are no pointers in flash I tried to just replace pointers to nodes with nodes themselves. Such things usually work in java I think because the language just automatically makes pointers for variables.
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If I use an Assignment within conditional, for e.g.
if(userType='admin')
Flex throws a warning,unlike Java, which throws an error.Why should Flex be doing this, despite being one of the newest languages? 1100: Assignment within conditional. Did you mean == instead of =?
I'm creating a small application in flash and I am getting this error when I test the application. My application runs like this, "select option" goes to second frame "select option" goes to another frame. When I click one of the buttons I get this error
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var imageData:ByteArray = new ByteArray();
var headshotStatement:SQLStatement = new SQLStatement();
headshotStatement.sqlConnection = dbConnection;
[code].....
TypeError: Error #1009: Cannot access a property or method of a null object reference. at MethodInfo-11() where is methodInfo-11?
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Error #1009: Cannot access a property or method of a null object reference.
This is the error I cannot seem to understand. On the stage I have a movie clip, mcTree. It's keyframe is in frame 3143. There is no tween or anything. In frame 3144, I have the following actionscript:
mcTree.gotoAndStop(2);
I publish the movie and I get to frame 3144 then BAM TypeError: Error #1009: Cannot access a property or method of a null object reference.
at 2file_fla::MainTimeline/frame3144()
As you can tell, I'm more than 3000 frames into my animation here and have made it this far using this method, and it has worked.
I am attempting to parse the following xml example into an array for accessing later in my flash file:
Code:
<root>
<books>
<book>
[Code]....
Say for example, I have an XML file with 100 "person" nodes, and I want the first 30. Or possibly 51 - 100. Is there any way to do this with e4x syntax to return an XMLList?
View 1 RepliesTrying to parse some XML (over which I have no control!)
In C# I would do something like:
XmlNodeList xnList = xml.SelectNodes("/Names/Name[@type='M']");
Can this be done in AS3?
Here is my XML. I have removed A LOT of what is actually in the XML file I am working with, for simplicity:
PHP Code:
<State><Center ID="BOCC">
<Dispatch><Log>
<LogType>Traffic Collision - Ambulance Responding</LogType>
[Code] .....
I need ONLY the text of the LogType's (FROM CENTER "BOCC" ONLY) to show up in a list component or trace the output.. doesn't matter.. I can formulate it myself.. I just need to only grab this specific data. I do not want to see any other results (e.g. from SOMEOTHERCENTER). Like show:
Traffic Collision - Ambulance Responding
Traffic Hazard
Pedestrian On A Highway
The actual file I'm working with (and can not alter) is [URL].
I need the Flex tree control by default open... where all nodes are visible.[code]...
View 3 RepliesHow do I get a Flex tree to display only specific XML nodes?
A sample of the XML data is below. Only the Grouper and Product elements should be displayed as branch and leaf nodes respectively; the Name elements should not be displayed. I can't use XSL or e4x to modify the XML as the Name elements' text is used as the label for the Grouper and Product tree nodes. Also, I cannot move the Name element to be an attribute as it needs to include a CDATA section.
It looks like using a custom TreeDataDescriptor is the way forward but I cannot find any examples of using one with XML.
<Grouper Type="ProductHeading" Id="" icon="drugIcon">
<Name>ASPAV</Name>
<Product Id="1002081" icon="genericIcon">
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I have a basic Tree built in Flex. The Tree works fine. I'm attempting to get a list of all of the visible nodes. I know there is a Tree.openItems, but that does not suffice because (for example) if you open all the items in your tree and then close the root, the invisible opened items are still counted.
View 1 RepliesI'm working on a tree component using a XMLLIST as a data provider.
<list>
<menuItem label="Home" menuItemId="1" >
<menuItem label="Info 1" menuItemId ="4"></menuItem>
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I need to select a nested node by the property 'menuItemId' without knowing the index.For example, select the item with the menuItemId 4.
<EFM><projects><project name="EFM Columbus Supply Chain Project">
<characteristics><characteristic name="Types of Data">
<textDescription></textDescription><options>
<option name="Commodity Flow" value="True"/>
<option name="Industry Assets" value="False"/>
[Code] .....
I want to select a XMLList of nodes by this criteria
<Projects>.<project>.@name = x &&<Projects>.<project>.<characteristics>.<characteristic>.<options>.<option>.(@name == y && @value == z)
Essentially query by both attributes [name and value] for a given project name
Im trying to learn how to deal with such banners. Seems that everything works fine BUT I cant select the nodes of the XML. See the code below It keep saying "cannot open url undefined".
ActionScript Code:
import mx.transitions.*;
import mx.transitions.easing.*;
var xml:XML = new XML();
xml.ignoreWhite = true;
xml.load("banners.xml");
xml.onLoad = function(sucesso) {
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private function openAllNodes(event:TimerEvent):void {
//Alert.show(event.target.currentCount);
var index:int =event.target.currentCount - 1;
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In my project I want to show the video like growing flex tree. So I tried flex timer based to expand node one by one. But if I open the first node then automatically close second time. If there is any other way to expand nodes one by one then let me know.
The problem is that a cannot acces the nodes in the tree using AS3 syntax. My guess is that the problem is nhe namespacing that is making it impossible. I have been sitting for hours trying to set namespaces or removing them, but i just cant get this to work. I can load the XML, but as soon as i try to walk down the tree i get no data output. Here is my actionscript so far:
var myNamespace:Namespace = new Namespace( "http://www.w3.org/2001/XMLSchema-instance" );
default xml namespace = myNamespace;
var xmlLoaderAvdelningar:URLLoader = new URLLoader();
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there is no way for me to acces one of the nodes in the tree and trace the data. To me the namespacing in the XML is very confusing, and i have no experience working with this kind of XML
Now, I'm writing a small game. I use actionscript to load a group of soldiers.It's pretty easy. But how do I select all of the soldiers by dragging the mouse?
View 3 RepliesI have created a list control with the instance name "dependents" and populated it with labels and data. MultipleSelection is set to true.
I would like to print the labels in a comma-delimited list.
I have used the following code...
dependents.selectedItems.toString()
which yeilds the following when there are two items selected...
[object Object],[object Object]
way to access the labels in these objects in the case of a multipleSelection
I'm having difficulty getting checkboxes on only the leaf nodes of a tree.Before anyone links it, I've seen [URL] and this isn't exactly what I need. I don't want a 3-state checkbox system including both branch and leaf.I understand applying the checkbox item renderer to a data grid but not on a tree.
View 1 RepliesI'm using the iconField property of the Flex Tree to dynamically set the icon that a node should use. This works fine for leaf nodes but for branch nodes it doesn't seem to respect my iconField and instead just shows the default folder node.
Here's a simple repro:
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
[Embed("assets/icon1.png")]
[Code].....
What happens is that icon2 shows for the East and West nodes but icon1 doesn't show for the Sales node. How can I get this to work?
I've spend hours searching for a way to put one paragraph of text in one tree node in Adobe flex. How can I do it? I created a simple tree view but the text is cut after the right border.
So I tried to create a tree renderer. In the renderer I specified width=100 and the text wrapped. But the height of the nodes was not being calculated properly, so the text over consecutive nodes overlapped and got messed.
So how do i do wrapped text in a tree node?
working with flex 4 and implementing filtering using ITreeDataDescriptor.Filtering worked as expected like the following code snippet however, i am trying to create a on-demand type of filter where user would type in the search clause in a TextInput, and as the user types, the tree nodes would be filtered on the fly.my implementation now is have user click on the search button and then reapply the dataDescriptor then reload the data. A big problem is that the whole tree collapses after setting the dataProvider again.any suggestion on how the on-demand filter can be achieved?
var dataFilter:ServicePricingFilter = new MyFilter();
dataFilter.searchString = this.txtSearchKeyword.text;
this.treeService.dataDescriptor = new MyDataDescriptor(dataFilter);
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Is there a way to enable dragging of only leaf nodes in a tree component?
View 1 Replieshow to build an AS3 multi file select upload that uses flash and php.
View 5 RepliesI'm using a tree control that I want to customize. The data items in the tree's dataProvider have a property name that should be used for labeling the node, and a property type that should be used to select one of several embedded images for use as an icon. The simplest way to do this is by using the labelField and iconFunction properties.
However, I wanted to get started with item renderers and open the door for adding more complex customization later, so I tried making my own item renderer. I extended the TreeItemRenderer class as follows and used it in my tree control:
class DirectoryItemRenderer extends TreeItemRenderer
{
[Embed("assets/directory/DefaultIcon.png")]
private static var _DEFAULT_ICON:Class;
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This code has no effect whatsoever, icon and label in the tree control remain at their defaults. Using trace(), I verified that my code is actually executed.
I'm using a flex combobox component in Flex builder 3 with sdk 3.4 and I'm trying to use it to expand and select the tree node that the user selected in the combobox component on the change event. However, I'm getting an error when I go to assign the combobox seletedItem to the tree selectedItem. Can you please help? What am I doing wrong?
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