Swift + Add Custom Right Bar Button Item on Navigation Bar or Add Multiple bar button on Navigation Bar in Swift

In viewDidLoad

//---   Add Custom Right Bar Button Item   ---//

            self.addRightNavItemOnView()

    func addRightNavItemOnView()

    {

        

        let buttonEdit: UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton

        buttonEdit.frame = CGRectMake(0, 0, 40, 40)

        buttonEdit.setImage(UIImage(named:"edit.png"), forState: UIControlState.Normal)

        buttonEdit.addTarget(self, action: "rightNavItemEditClick:", forControlEvents: UIControlEvents.TouchUpInside)

        var rightBarButtonItemEdit: UIBarButtonItem = UIBarButtonItem(customView: buttonEdit)

        

        

        

        let buttonDelete: UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton

        buttonDelete.frame = CGRectMake(0, 0, 40, 40)

        buttonDelete.setImage(UIImage(named:"delete.png"), forState: UIControlState.Normal)

        buttonDelete.addTarget(self, action: "rightNavItemDeleteClick:", forControlEvents: UIControlEvents.TouchUpInside)

        

        

        var rightBarButtonItemDelete: UIBarButtonItem = UIBarButtonItem(customView: buttonDelete)

        

        

        

// add multiple right bar button items       self.navigationItem.setRightBarButtonItems([rightBarButtonItemDelete, rightBarButtonItemEdit], animated: true)

        

    // uncomment to add single right bar button item

   // self.navigationItem.setRightBarButtonItem(rightBarButtonItem, animated: false)

        

    }

    

    

    func rightNavItemEditClick(sender:UIButton!)

    {

        println("rightNavItemEditClick")

    }

    

    func rightNavItemDeleteClick(sender:UIButton!)

    {

        println("rightNavItemDeleteClick")

    }

Swift + Add Custom Left Bar Button Item on Navigation Bar

 In View Did Load

//---   Add Custom Left Bar Button Item   ---//

        self.addLeftNavItemOnView()

    func addLeftNavItemOnView ()

    {

       // hide default navigation bar button item

        self.navigationItem.leftBarButtonItem = nil;

        self.navigationItem.hidesBackButton = true;

        

        

        let buttonBack: UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton

        buttonBack.frame = CGRectMake(0, 0, 40, 40)

        buttonBack.setImage(UIImage(named:"ImageName.png"), forState: UIControlState.Normal)

        buttonBack.addTarget(self, action: "leftNavButtonClick:", forControlEvents: UIControlEvents.TouchUpInside)

        

        var leftBarButtonItem: UIBarButtonItem = UIBarButtonItem(customView: buttonBack)

        

        self.navigationItem.setLeftBarButtonItem(leftBarButtonItem, animated: false)

        

        

    }

    

    func leftNavButtonClick(sender:UIButton!)

    {

        self.navigationController?.popViewControllerAnimated(true)

    }