Question

Suppose I have a parent class that implements a protocol:

@interface GameViewController : UIViewController<GamePrizeDelegate> {
  ...
}

And then I make subclasses of it:

@interface TennisViewController : GameViewController {
  ...
}

@interface SoccerViewController : GameViewController {
  ...
}

Do I have to include the GamePrizeDelegate also in the subclasses? Are the protocols inherited as well?

Thanks!

Answer 1

Referring to Apple’s documentation: Your subclass does inherit the adoption of the protocol, so you don’t have to adopt it again.

Conforming to a Protocol

A class is said to conform to a formal
protocol if it adopts the protocol or
inherits from another class that
adopts it. An instance of a class is
said to conform to the same set of
protocols its class conforms to.