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Displaying the row number or index in a spark List | Flexponential
The ItemRenderer class in Flex 4 has an itemIndex property that was added after beta2. You can use this property within your item renderer to display the row number or index of an item in a spark List. The following example demonstrates a List with a custom item renderer that uses this itemIndex property. If you look at the commented out code in the item renderer you will also see a way of getting
Caching images loaded from a spark item renderer | Flexponential
I recently created a form in Flex that required using multiple DropDownLists with a custom item renderer that loads in preview images of each item. This was really easy to do initially, but I noticed a couple performance issues that bothered me. I decided to improve the performance by implementing a simple caching strategy. There were two main issues I wanted to improve. Issue 1: Preview images wo
Flexponential » Multiple selection in a spark List without the control key
The spark List component in Flex 4 allows you to select multiple items when you set allowMultipleSelection to true. With this flag set you can select multiple items by using the control/command key. If you want to have a List that allows multiple selection, but does not require the user to hold down the control key when selecting items you can subclass List and override the item_mouseDownHandler()
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Custom focus skin for spark components in Flex 4 | Flexponential
