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To give Hidden in Tabbar
Add this line in Swift’s Viewdidload() :
self.tabBarController?.tabBar.hidden = true
To show the Uitoolbar And in Viewdidload() try this too
toolBar.barStyle = UIBarStyle.Black
       self.view.addSubview(toolBar)
Example :
import UIKit
class ViewController: UIViewController {
var toolBar = UIToolbar(frame:CGRectMake(0, 524, 320, 44))
    override func viewDidLoad() {
        super.viewDidLoad()
        self.tabBarController?.tabBar.hidden = true
        toolBar.barStyle = UIBarStyle.Black
       self.view.addSubview(toolBar)
    }
}

