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iOS Protocols in Swift Protocol Basics Protocols With Methods

Posted by Payton Nix
Payton Nix
1,782 Points

I thought i was doing it right

Please help, lost and google is not helping

protocols.swift 
protocol ColorSwitchable {
    func switchColor(_ color: Color)
}


enum Color {
  case rgb(Double, Double, Double, Double)
  case hsb(Double, Double, Double, Double)
}

class WifiLamp {
  let state: LightState
  var color: Color

  init() {
    self.state = .on
    self.color = .rgb(0,0,0,0)
  }
}

protocol ColorSwitchable {
  func switchColor(color: Color)
}

}

1 Answer

Aniruddha Shukla
Aniruddha Shukla
2,846 Points
Aniruddha Shukla
Aniruddha Shukla
2,846 Points

You are not conforming to the protocol in your class WifiLamp properly. Why are you declaring the protocol again? Also the method is implemented outside the scope of WifiLamp class.

// Declare protocol here
protocol ColorSwitchable {
  func switchColor(_ color: Color)
}

enum LightState {
  case on, off
}

enum Color {
  case rgb(Double, Double, Double, Double)
  case hsb(Double, Double, Double, Double)
}

class WifiLamp: ColorSwitchable {
  let state: LightState
  var color: Color

  init() {
    self.state = .on
    self.color = .rgb(0,0,0,0)
  }

  func switchColor(_ color: Color) {
     self.color = color
  }
}