CPBarButtonProviding
The methods that templates use to provide buttons for the navigation bar.
Declaration
protocol CPBarButtonProviding : NSObjectProtocolOverview
CPBarButtonProviding is a protocol that templates use to provide a Back button and leading and trailing buttons for the navigation bar.
You don’t adopt this protocol in your own types. If you want to add buttons to the navigation bar, you must use one of the prebuilt templates that already conforms to the protocol, such as CPMapTemplate or CPContactTemplate.