Creating a Button using Swift

 //MARK:UIButton

    func buttonClass()

    {

        //Creating the Button

        var btn:UIButton!

        btn = UIButton(frame: CGRectMake(100, 100, 100, 30));

        

        //set Title

        btn.setTitle("Login", forState:UIControlState.Normal)

        

        //set Text Color

        btn.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)

        

        //set Back ground Color

        btn.backgroundColor = UIColor.greenColor()

        

        //Add target

        btn.addTarget(self, action: "buttonTapped:", forControlEvents: UIControlEvents.TouchUpInside)

        

        //Add to the View

        self.view.addSubview(btn)

    }

    func buttonTapped(sender : UIButton!)

    {

        var myBtnObj = sender

        println("button tapped called")

    }

creating an Image View using Swift

Class Abc:UIViewController

{    

    //MARK:UIImageView 

    func imageViewClass()

    {

        //Creating Image View

        var imgView:UIImageView!

        imgView = UIImageView(frame: CGRectMake(100, 100, 100, 100))

        

        //set Image

        imgView.image = UIImage(named: "a.png")

        

        //set Back Ground Color

        imgView.backgroundColor = UIColor.blackColor()

        

        //Add gesture

        var tap =  UITapGestureRecognizer(target: self, action: "imageTapped:")

        imgView.gestureRecognizers = NSArray(object: tap)

        imgView.userInteractionEnabled = true

        

        //set Content Mode

        imgView.contentMode = UIViewContentMode.ScaleAspectFill

        

        //Add to View

        self.view.addSubview(imgView)

    }

    func imageTapped(sender: UITapGestureRecognizer!)

    {

        println("My Image is Tapped")

    }

    

}

Creating a Label in Swift

      //MARK:UILabel

    func labelClass()

    {

        //Create Label

        var lbl:UILabel!

        lbl = UILabel(frame: CGRectMake(100, 100, 100, 40))

        

        //set text

        lbl.text = "First Label"

        

        //Text Color

        lbl.textColor = UIColor.redColor()

        

        //Add SubView

        self.view.addSubview(lbl)

    }