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Intro

The list is suited best for smaller sets of data because the list does not recycle list items. But for most mobile applications you don't normally have that many items to scroll. Adobe also recommends that you not use the drawing API in Flash because of its memory consumption on mobile devices. It would be better to create a MovieClip or Sprite in Flash and use that as the background of your item renderer. However, int this project I used the drawing API to change the selection color of the list item throwing all caution to the wind.

TouchList

The TouchList class creates the list, adds items and handles touch events dispatched by the item renderers. You might notice that I didn't use any actual TouchEvent listeners in the list. This is because a TouchEvent is essentially a MouseEvent and I couldn't see any difference in using one over the other. The TouchList class has a built in delay to differentiate between a scrolling and touch action. Like the Android phone, you can't select an item while scrolling and pressed items are deselected if you scroll while pressed.

TouchListItemRenderer

TouchListItemRenderer implements ITouchListItemRenderer and renders the display of the items in the list data. This renderer can be customized to show whatever type of data you want in the list. List items can also be variable height.

ITouchListItemRenderer

If you want to create an item renderer for the list, then it must implement the ITouchListItemRenderer interface. This interface gives the renderer basic functionality to interact with user selection and touch events used by the list.

ListItemEvent

The list item event is a custom custom ListItemEvent dispached when a list item renderer is pressed. The event contains the event payload and a instance of the item renderer selected.

Installation

Included in the GitHub repository is a working project (.zip) that I created in Flash Builder 4 that handles adding the list to the stage, screen orientation on the device, stage resize, and other functions for an Android AIR application. To install, just download the checkout the code and import the project it into Flash Builder 4 as a Flex Project. I have also included Android .apk file if you want to deploy it directly to your Android phone.