Centering UIBarButtonItem Plain in toolbar vertically - ios

Question

dI have a uitoolbar that has two buttons, First one is a System Button item Camera, second is a System item flixable space, and third is a Plain Button with text. However, when the toolbar comes up, the first button is centered but the Plain button is not.
Any idea on how to change the right button to center vertically?
This is the code on setting up the toolbar:
let sendButton = UIBarButtonItem(title: "test", style: .Plain, target: self, action: #selector(MyClass.test(_:)))
let toolBarItems = [UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: nil),
UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: self, action: nil),
sendButton]

Answer 1

Here is the code i tried .
import UIKit
class ViewController2 : UIViewController {
#IBOutlet weak var mytoolbar: UIToolbar!
override func viewDidLoad() {
super.viewDidLoad();
let sendButton = UIBarButtonItem(title: "test", style: .Plain, target: self, action: nil)
let toolBarItems = [UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: nil),
UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: self, action: nil),
sendButton]
mytoolbar.items = toolBarItems
}
}
Edit : I'm using the below code to create the uitoolbar programmatically.
let mytoolbar = UIToolbar.init(frame: CGRect(x: 0 , y: 0, width:self.view.frame.size.width, height: 44))
mytoolbar.backgroundColor = UIColor.blueColor()
let sendButton = UIBarButtonItem(title: "test", style: .Plain, target: self, action: nil)
let toolBarItems = [UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: nil),
UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: self, action: nil),
sendButton]
mytoolbar.items = toolBarItems
self.view.addSubview(mytoolbar)
Hope this helps now
Here are the results:
It is centered i guess . Can you show me your code to add UIToolbar ?