is there an API for the displaying of an activity indicator followed by a checkmark, as in Apple's wallpaper loading screen?

http://www.angrypuppetsoftware.com/imagehost/photo3.png

http://www.angrypuppetsoftware.com/imagehost/photo2.png

When you set a wallpaper on the iPhone, it shows some sort of activity indicator, followed by a checkmark (see screenshots above). Is there any way to integrate this into an applicatio开发者_JS百科n programmatically?

Nothing built in to the SDK. You can roll your own UIview or this should cover what you are trying to do quite nicely: http://github.com/jdg/MBProgressHUD