How do I export graphics with alpha(transparency)

[Patrick Daniels]

I am making an iPhone game and am trying to separate all the graphics now to be programed for the iPhone, but I don't know how to separate single images, such as a tree. How do I do this?

[PARKER]

First leave only visible the layer that contains the shapes you want to export and then do it in PNG format.

[Patrick Daniels]

Thank you.

[Uolter]

If you need a single image, put all the elements on different layers then on layers window uncheck layer visibility for those you don't need and render the frame as png with ctrl+r. If you need an animation the only way I know to mantein transparency is to export as png image sequence and rearrange animation as swf with Flash. If you need single elements check don't render this layer in the layer settings tab for those you don't need.

[Patrick Daniels]

Thank you.

[PARKER]

Thank you.

Your welcome.

[Víctor Paredes]

You can export as a layered PSD too.
Each layer which be on the first level will be a layer on the PSD.
For example, let's suppose in AS you have

- Character 1
----head
----body
- Character 2
----head
--------hair
--------eyes
--------face
----body
- Tree
- Backrgound
----Montains
----Clouds
----Sun
----Sky

If you export that as PSD, you will obtain four layers: Character 1, Character 2, Tree and Background.