How to add a "Continue" button to a top Navigation Bar in iOS/Swift

Question

(Xcode6, iOS8, iPhone, Swift)

I would like to add a "Continue" button on the right of the navigation bar.

How can this be accomplished? I've been trying with some of the methods available on UIBarButtonItem, but can't get it working.

My best effort to date has been:

    var b = UIBarButtonItem(title: "Continue", style: UIBarButtonItemStyle, target: self, action: nil)
    self.navigationItem.rightBarButtonItem = b

But I'm getting an error on the first line. It doesn't like the "style" parameter. I've also tried

    var b = UIBarButtonItem(title: "Continue", style: UIBarButtonItemStylePlain, target: self, action: nil)

But no luck. Still stuck on the style parameter. Any ideas? tyvm Keith :D

EDIT: For posterity, the following line also includes an action setting:

    var b = UIBarButtonItem(title: "Continue", style: .Plain, target: self, action:"sayHello")

Reference: How to set the action for a UIBarButtonItem in Swift

Answer 1

enum UIBarButtonItemStyle : Int {
case Plain
case Bordered
case Done
}

So you should NOT write 'UIBarButtonItemStyle', but use '.Plain' (note the dot preceding the word):

var b = UIBarButtonItem(title: "Continue", style: .Plain, target: self, action: nil)

To add an actual action to the button you use the following (assuming the method sayHello() exists):

var b = UIBarButtonItem(title: "Continue", style: .Plain, target: self, action: Selector("sayHello"))

Edit: Typo in code