Direction of the TileList behaves strange

I stumbled into an incorrect working function of the TileList in Flex. It looks like they swopped a few variables around.

If you set the direction of the TileList to horizontal it looks like Flex doesn’t care about the option and just scolls vertical. After that I checked an Adobe quickstart guide to know sure that I wasn’t doing anything wrong. But I couldn’t find anything that I missed.

Because I hate it if things don’t work I try everything to get it working. So I tried to set the direction to vertical just to see if something was happening and now the TileList scolled horizontal… very strange.

here is a example with source code (right click)

Maybe I’m doing something wrong? Do other people have the same problem?

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You’re currently reading “Direction of the TileList behaves strange,” an entry on Arno Manders

Published:: 04.18.08 / 1pm

Category:: Adobe AIR, Flash, Flex, General, Programming, actionscript 3, component

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Thomas Ruehl 25 April, 2008

Hi there. Don’t know, if this is still a ‘problem’ for you, but here’s how the drection property should be interpreted:

The direction property of a TileList dosen’t affect the scrolling direction of the component at all! Furthermore, it specifies, how the TileList orders the individual tiles – in a vertical or a horizontal manner (2×2 matrix i.e.):

vertical: [r1, c1], [r2, c1], [r1, c2], [r2, c2]
horizontal: [r1, c1], [r1, c2], [r2, c1], [r2, c2]

To define the direction and scrolling behaviour, you need to set the rowCount/columnCount properties and use verticalScrollPolicy and/or horizontalScrollPolicy.

Cheers, Thomas

Arno Manders 25 April, 2008

The adobe quick start guide says something else. That it is for the scroll direction.

And in this example I changed only the direction from vertical to horizontal:
http://blog.arnomanders.nl/upload/flex/TileListTest2/TileListTest.html

and the scroll direction also changed but still wrong in my opinion

Horizontal Scrollbar in TileList « saumya 4 December, 2008

[...] HOraizontal Scrollbar came in after I set direction=”vertical”. After a googling a bit I found this( by Arno Manders), which confirmed me that this is the way to go. Thought I would share it immediately as somebody out there may be [...]

Unknown Blog » Blog Archive » TileList direction Parameter ist verwirrend 28 January, 2009

[...] Direction of the TileList behaves strange [...]

sandrar 10 September, 2009

Hi! I was surfing and found your blog post… nice! I love your blog. :) Cheers! Sandra. R.