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iOS Swift 2.0 Protocols Swift 2.0 Protocols Protocols With Methods

Posted by Liam Tulit
Liam Tulit
2,973 Points

Swift 2.0 Protocols Code Challenge

I am really stuck on how to get this to work. An explanation and the answer would be greatly appreciated.

For this task, make WifiLamp adopt the ColorSwitchable protocol. In the implementation of the method, simply set the color of the lamp to the new color.

protocols.swift 
// Declare protocol here
protocol ColorSwitchable {
    func switchColor(color: Color) -> WifiLamp
}

enum LightState {
  case On, Off
}

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)
  }
}

2 Answers

Nils Garland
Nils Garland
18,416 Points
Nils Garland
Nils Garland
18,416 Points

You need to use inheritance from your protocol to you class, I would suggest watching the videos back and understanding it more.

Inheriting looks like this essentially:

class SomeSubclass: SomeSuperclass {
    // subclass definition goes here
}

Once you have inherited the protocol you need to set the content to what is required from the question.

Liam Tulit
Liam Tulit
2,973 Points

Thank You Nils

ANDREA HEMPHILL
ANDREA HEMPHILL
14,484 Points
ANDREA HEMPHILL
ANDREA HEMPHILL
14,484 Points

This is the answer !!

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(190,60,80,1)
}
func switchColor(color: Color) {

     self.color = .RGB(190/255.0, 60/255.0, 90/255.0, 1)
}

}