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iOS Object-Oriented Swift Inheritance What is Inheritance?

Posted by Millie J
Millie J
1,448 Points

We've decided that we need to have round buttons in our user interface.

We've decided that we need to have round buttons in our user interface. So write a subclass named RoundButton which inherits from Button.

Button.swift 
class RoundButton {
  var width: Double
  var height: Double

  init(width:Double, height:Double){
    self.width = width
    self.height = height
  }
}

1 Answer

Steven Deutsch
Steven Deutsch
21,046 Points
Steven Deutsch
Steven Deutsch
21,046 Points

Hey Millie J,

To create a subclass from another class you write a semi colon and then the name of the class you are subclassing after the subclasses name.

class Button {
  var width: Double
  var height: Double

  init(width:Double, height:Double){
    self.width = width
    self.height = height
  }
}

/* We want to create a subclass of Button
called RoundButton */

class RoundButton: Button {

}

Good Luck!

Millie J
Millie J
1,448 Points

Thanks a lot!