How to pass enum as a parameter in a optional method within a protocol

Question

enum SearchBarAction {
  case Cancel
  case Bookmark
  case Location
  case Category
  case Filter
}

@objc protocol SearchBarNavigatorDelegate: class {
  optional func searchBarNavigator(clicked: SearchBarAction)
}

This gave me an error

Method cannot be a member of an @objc protocol because the type of the parameter cannot be represented in Objective-C

I need this method to be optional therefore i cannot remove @objc to solve this.

Is there any way to use optional protocol method while passing an enum as a parameter to the method?

Answer 1

It will work if you declare the enumeration as @objc with raw type:

@objc enum SearchBarAction: Int {
    case cancel
    case bookmark
    case location
    case category
    case filter
}