Android :: Make App Icon Available To Other Applications

I would like my application icon to be available to other applications.

I understand this is a bit unclear so will try explain:

Applications such as Astros program manager lists applications with their icon. For all apps this is the correct icon as on the launcher, except mine which is displaying the standard android icon. I have set my icon as the manifest using: android:icon="@drawable/runninglate"

This works on the launcher but Astro still shows the default icon from when I create the project (which I deleted a long time ago). I have also tried renaming my icon file to icon.png in case this was a standard. This also failed to work.