Flex TileList...

Have you ever developed any Flash application using Adobe Flex? I started my Flex application since I worked 2 months of my current job and now I have worked here half year.

I think it is very powerful but you used to have a good OO concept and Actionscript 3.0 knowledge. I started from zero to now (I think now is okay). But still have many many problems because of there are lots of classes and methods to use.

This time my challenge is TileList. I used TileList layout to display a list of visual items (image, buttons, video and other functions in it). I'm using a "Panel" component to surrounding the TileList that can make a title and customerized buttons and functions in the layout.

I can render items from database to the TileList. Initially, I found there is no any problem because there are just few items. Once my boss asked me to add more items to test the performance that I found some items were missing...You know why? I checked awhile and I figured out that is due to my "Panel" container.

Since TileList won't render any items from out of viewable screen, I need to scroll down to show the rest of items. But why I cannot show up even I scroll down the list? I finally found out that was due to the scrollbar is from "Panel" component instead of TileList. I was disabled TileList ScrollPolicy in order to fit the layout. Therefore, I fixed the problem by simply changing TileList ScrollPolicy to auto and disable "Panel" ScrollPolicy instead. So funny...?! No! That is really easy to mix up. I should beward of that later...

Keep learning la.