How to show and add toolbar buttons to UITableViewController with Swift - swift

Question

I am trying to programatically show and add toolbar buttons to a toolbar in a UITableViewController embedded in a UINavigationController. The toolbar appears but no buttons appear. Here is my code:
var items = [UIBarButtonItem]()
items.append(UIBarButtonItem.init(barButtonSystemItem: .FlexibleSpace, target: nil, action: nil))
items.append(UIBarButtonItem(title: "Clear", style: UIBarButtonItemStyle.Plain, target: self, action: Selector("btnClearAction")))
self.navigationController!.setToolbarHidden(false, animated: true)
self.navigationController!.setToolbarItems(items, animated: false)

Answer 1

While migrating my app to swift, I just found out I had the same issue. Only I'm trying to add it to a left menu controller which holds a table view. Shouldn't be all that different?
I just now got it solved by creating the toolbar programmatically.
Here's what I did:
Under the class
class LeftViewController: ViewController, UITableViewDataSource, UITableViewDelegate {
var tableView: UITableView!
var toolBar: UIToolbar!
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor(red: 45/255, green: 45/255, blue: 45/255, alpha: 1.0)
self.tableView = UITableView(frame: self.view.bounds, style: .Plain)
self.tableView.delegate = self
self.tableView.dataSource = self
self.view.addSubview(self.tableView)
//UPDATE #3
self.tableView.frame = CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height-20)
self.edgesForExtendedLayout = .None
navigationController?.navigationBar.barTintColor = UIColor.blackColor()
navigationController?.navigationBarHidden = true
let Button1 = UIBarButtonItem(title: "Button1", style: .Plain, target: self, action: "your action")
let Button2 = UIBarButtonItem(title: "Button2", style: .Plain, target: self, action: "your action")
let Button3 = UIBarButtonItem(title: "Button3", style: .Plain, target: self, action: "your action")
let Button4 = UIBarButtonItem(title: "Button4", style: .Plain, target: self, action: "your action")
//Flexiable Space
let flexiableItem = UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: nil, action: nil)
//UPDATE #2
toolbarItems = [Button1, Button2, flexiableItem, Button3, Button4]
}
Obviously style your buttons, view, cells etc..however you want.
I did leave a lot out of what I posted because it didn't pertain to the topic.
Hope this helps.
UPDATE:
Awesome. One fix brings on another problem.
My toolbar vanishes when rotating the device. Rotate back and the buttons are gone. Could just be something in my project but yah.
UPDATE #2:
Answer updated with working code. Removed the toolBar I made and found a solution which works. Even with rotation.
UPDATE #3:
Sets the table view 20px creating a "status bar" and reduces the bottom of the table view by 20px so it fits on top of the toolbar.