info/information icon for apple iphone

Th开发者_如何学Pythonat little "i" with a circle around it on the iPhone, like on the bottom right hand side of the screen in the Weather application, is there a way we can use that icon in the SDK? Thanks.

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yes you can :

[UIButton buttonWithType:UIButtonTypeInfoLight]

OR

[UIButton buttonWithType:UIButtonTypeInfoDark]

will give you the button with this small "i".