import UIKit

class ViewController: UIViewController, UIAlertViewDelegate   {
                            
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.    
        var button = UIButton.buttonWithType(UIButtonType.System) as UIButton
        button.frame.origin = CGPointMake(100.0, 150.0)
        button.frame.size = CGSizeMake(150,50)
        button.setTitle("Click me!", forState: UIControlState.Normal)
        button.addTarget(self, action: "buttonClick:", forControlEvents: UIControlEvents.TouchUpInside)
        self.view.addSubview(button)
        println("here!")
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    func buttonClick(sender: UIButton!){
        let alert = UIAlertView()
        alert.title = "alert"
        alert.delegate = self
        alert.addButtonWithTitle("Yeah!")
        alert.message = "Hello World"
        alert.show()
    }
}