By default, and for performance reasons, there is no write-detection to properties. You use proxy, [bindable] or setters to detect writes. Collections will watch their items for changes if they can, but you are using dynamic objects and they have to write-detection. Collections have an itemUpdated method to allow you to manually notify the collection that something that could not be watched changed.
________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Charles Galpin Sent: Tuesday, October 02, 2007 11:38 AM To: [email protected] Subject: [flexcoders] TileList invalidateList not working Hopefully an easy one. Please try the simple test case below. Select one or more items, enter a new label and click "Update". You can optionally select the checkbox to force an invalidateNow after the update, but either way, the list doesn't refresh. If you scroll down and up, then they refresh. How can I get my TileList to refresh when data changes? thanks charles <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml <http://www.adobe.com/2006/mxml> " layout="absolute" applicationComplete="appInit()"> <mx:Script> <![CDATA[ import mx.collections.ArrayCollection; private function appInit():void { setData(); } private function setData():void { for (var i:int=0; i<30; i++) { dataCollection.addItem({id: i, data: "element " + i}); } list.invalidateList(); } private function update():void { // save selection var indices:Array = list.selectedIndices; for (var i:int=0; i<indices.length; i++) { var obj:Object = dataCollection.getItemAt(indices[i]); obj.data = val.text; } list.invalidateList(); if ( doValidateNow.selected ) list.validateNow(); } ]]> </mx:Script> <mx:ArrayCollection id="dataCollection" /> <mx:VBox height="400"> <mx:HBox> <mx:TextInput id="val" /> <mx:Button label="Update" click="update()" /> <mx:CheckBox id="doValidateNow" label="Do a validateNow" /> </mx:HBox> <mx:TileList id="list" allowMultipleSelection="true" width="250" height="150" change="{ val.text = list.selectedIndices.length > 0 ? '' : list.selectedItem.data}" columnCount="1" labelField="data" dataProvider="{dataCollection}" > <mx:itemRenderer> <mx:Component> <mx:Label text="{data.data}" /> </mx:Component> </mx:itemRenderer> </mx:TileList> </mx:VBox> </mx:Application>
