This is a post by iOS Tutorial Team member Cesare Rocchi, a UX designer and developer specializing in web and mobile applications.
There may be times you’ve downloaded a cool application with a new kind of user interface component, and you’ve wondered: how was it built?
One great example of this is the rotary wheel, used by ConvertBot and other applications as a way for users to select options from a menu.
This component is intuitive to use because it resembles many similar controls we use in real life to make choices.
Via
Vincent Demay,
Sébastien HOUZÉ,
rebotnix technologies