UIImageView Dynamic

//

//  ViewController.swift

//  TestApp1

//

//  Created by Divakar Singh on 3/1/17.

//  Copyright (c) 2017 Divakar Singh. All rights reserved.

//

import UIKit

class ViewController: UIViewController {

    

    var img1 :UIImageView!

    var btn1 : UIButton!

    var btn2 : UIButton!

    var btn3 : UIButton!

    

    

    override func viewDidLoad() {

        super.viewDidLoad()

        // Do any additional setup after loading the view, typically from a nib.

        

        // create Label

        img1 = UIImageView()

        img1.sizeToFit()

        img1.frame = CGRect(x: 10, y: 10, width: 200, height: 200)

        img1.image = UIImage(named: "images")

        img1.contentMode = UIViewContentMode.ScaleAspectFit

        img1.backgroundColor = UIColor.grayColor()

        view.addSubview(img1)

      

    

        // create switch 2

        btn1 = UIButton()

        btn1.frame = CGRect(x: 50, y: 300, width: 150, height: 36)

        btn1.setTitle("Change", forState: UIControlState.Normal)

        btn1.backgroundColor = UIColor.greenColor()

        btn1.addTarget(self, action: "changeImage:", forControlEvents: UIControlEvents.TouchUpInside)

        

        view.addSubview(btn1)

        // create switch 2

        btn2 = UIButton()

        btn2.frame = CGRect(x: 150, y: 300, width: 150, height: 36)

        btn2.setTitle("Opaque", forState: UIControlState.Normal)

        btn2.backgroundColor = UIColor.greenColor()

        btn2.addTarget(self, action: "opaqueImage:", forControlEvents: UIControlEvents.TouchUpInside)

        

        view.addSubview(btn2)

     }

    

    func changeImage(sender : UIButton)

    {

     img1.image = UIImage(named: "Screenshot")

    }

    func opaqueImage(sender : UIButton)

    {

        img1.alpha = 0.5

    }

    

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    

    

}