Spark list remove items crashes app

Just wondering if any one else has seen this 'bug'??
We have a spark list in our iOS app which works fine when we populate it but if we want to remove an entry the app crashes.
We're using standard techinques for manipulating the data provider array collection and so the app works perfectly on the desktop.
But, on the device the app just crashes.
Any ideas?

Can you provide a really simple, complete, compilable sample application that demonstrates this bug?

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When i use basic layout on the lsit and explicitly set the x and y, they appear behind the list.
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Hi jmandawg,
My ListRenderer.mxml may be what you want as follows,
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer
xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="
library://ns.adobe.com/flex/spark" xmlns:mx="
library://ns.adobe.com/flex/mx" hide="mOut(
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<fx:Script>
<![CDATA[
import mx.controls.TextInput;
import mx.managers.PopUpManager;
import mx.utils.StringUtil;
import flash.text.TextLineMetrics;
public var mouseOnPopup:Boolean = false;
public var vi:mx.controls.TextInput;
private function inited():void {vi =
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false;vi.addEventListener(MouseEvent.MOUSE_OUT, mOut);
vi.addEventListener(MouseEvent.ROLL_OUT, mOut);
vi.addEventListener(MouseEvent.MOUSE_OVER, mOverPopup);
private function mOut(event:MouseEvent):void {
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mouseOnPopup =
false;}
private function mOverPopup(event:MouseEvent):void {mouseOnPopup =
true;}
private function mOutValueItem(event:MouseEvent):void {
if ( vi.isPopUp && !mouseOnPopup) {PopUpManager.removePopUp(vi)
private function mOver(event:MouseEvent):void {
var txt:String = itemValue.texttxt = StringUtil.trim(txt);
if(txt.length<5) return;
if(!vi.isPopUp) {PopUpManager.addPopUp(vi,
this.parent)vi.text=txt;
vi.setStyle(
'fontSize',18);
var txtMetrics:TextLineMetrics = vi.measureText(vi.text);vi.width=txtMetrics.width*1.2
vi.height=itemValue.height*1.4
var p:Point = itemValue.localToGlobal(new Point(itemValue.x, itemValue.y));vi.x=p.x;
vi.y=p.y-10;
]]>
</fx:Script>
<s:TextInput id="itemValue" text="{data.value}" width="200" mouseOver="mOver(event)" mouseOut="mOutValueItem(event)" mouseMove="mOut(event)" editable="false"/>
</s:ItemRenderer>
You may test it with the following in your main.mxml
Bindable]
private var detailAC:ArrayCollection = new ArrayCollection([{value:"nteDevice.device"},{value:
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"nteDevice.ipAddressnteDevice.loopbackIpAddr"},{value:
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"nteDevice.release"},{value:
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<s:List id="lst" itemRenderer="com.att.ntscp.view.component.ListRenderer" dataProvider="{detailAC}" width="200" height="200"/>
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[0] = "name1"
[1] = "name 2"
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and when i click on another item i need that color to stay... red on "name 1"...
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                          focusEnabled="true" >
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Hi there
I am having trouble removing items from a JList. For a While it was working fine and now it outputs runtime errors everytime samething gets removed from the lsit
Here is the code
//declare
public class Consumertab1gui extends JPanel implements ActionListener
     public static JList conList = null;
     private static DefaultListModel model = null;
// Create a list with some items
model = new DefaultListModel();
conList = new JList(model);
//set the size of cells in the list with the length of the string
conList.setPrototypeCellValue("Lenght 1234567890");
conList.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
conList.addListSelectionListener(new ValueReporter());
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JScrollPane conScroll = new JScrollPane(conList);
add(conScroll,c);
//when the button gets pressed to drop the selected item the following code is called
private void dropConsumer()
int selItem=0;
componentsV.comVRemove(conList.getSelectedValue().toString());
selItem=conList.getSelectedIndex();
System.out.println("No:"+(model.getSize()-1));
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remConList(selItem);
dropCon.setEnabled(false);
//which in turns calls this
public void remConList(int pos)
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when the model.remove(pos) code is executed the following runtime errors are given:
java.lang.NullPointerException
at Consumertab1gui$ValueReporter.valueChanged(Consumertab1gui.java:197)
at javax.swing.JList.fireSelectionValueChanged(JList.java:1321)
at javax.swing.JList$ListSelectionHandler.valueChanged(JList.java:1335)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:187)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:167)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:214)
at javax.swing.DefaultListSelectionModel.removeIndexInterval(DefaultListSelectionModel.java:546)
at javax.swing.plaf.basic.BasicListUI$ListDataHandler.intervalRemoved(BasicListUI.java:1561)
at javax.swing.AbstractListModel.fireIntervalRemoved(AbstractListModel.java:160)
at javax.swing.DefaultListModel.remove(DefaultListModel.java:478)
at Consumertab1gui.remConList(Consumertab1gui.java:38)
at Consumertab1gui.dropConsumer(Consumertab1gui.java:58)
at Consumertab1gui.actionPerformed(Consumertab1gui.java:46)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
at java.awt.Component.processMouseEvent(Component.java:5100)
at java.awt.Component.processEvent(Component.java:4897)
at java.awt.Container.processEvent(Container.java:1569)
at java.awt.Component.dispatchEventImpl(Component.java:3615)
at java.awt.Container.dispatchEventImpl(Container.java:1627)
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at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
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at java.awt.Window.dispatchEventImpl(Window.java:1606)
at java.awt.Component.dispatchEvent(Component.java:3477)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
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at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
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can anyone spot any mistakes in the code or suggest possible resons as to why these run time errors occur?
Thanks
alexis

java.lang.NullPointerException
at Consumertab1gui$ValueReporter.valueChanged(Consumertab1gui.java:197)The NullPointerException occurs at line 197, in the valueChanged method of your ValueReporter inner class. I have looked through your post several times but I don't see where you posted that method. Anyway, that is where you should look.
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