6

osbo.com | Xcode | 6

Add a button.

The button detects touch events.

1. 1
2. 2
3. 3
4. 4
5. 5

1. Open ViewController.swift
2. Copy and paste code

1. Open Main.storyboard
2. Click View
3. Click Utilities
4. Click Show Object Library
5. Drag Button to View
6. Click View
7. Click Utilities
8. Click Show Connections Inspector
9. Under Sent Events, after Touch Up Inside, drag + to View Controller
10. Click touchUpInside:
11. Under Referencing Outlets, after New Referencing Outlet, drag + to View Controller
12. Click interfaceBuilderButton

1. Click Product
2. Click Run

import UIKit

class ViewController: UIViewController
{
    @IBOutlet weak var interfaceBuilderButton: UIButton!
    @IBOutlet weak var interfaceBuilderLabel: UILabel!
    
    override func prefersStatusBarHidden() -> Bool
    {
        return true
    }
    override func supportedInterfaceOrientations() -> Int
    {
        return Int(UIInterfaceOrientationMask.All.rawValue)
    }
    override func viewDidLoad()
    {
        super.viewDidLoad()
        
        self.interfaceBuilderLabel.backgroundColor = UIColor.blackColor()
        self.interfaceBuilderLabel.text = "Hello Xcode"
        self.interfaceBuilderLabel.textAlignment = NSTextAlignment.Center
        self.interfaceBuilderLabel.textColor = UIColor.whiteColor()
        self.view.removeConstraints(self.view.constraints())
        self.view.addConstraint(NSLayoutConstraint(item: self.interfaceBuilderLabel, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Top, multiplier: 1, constant: 20))
        self.view.addConstraint(NSLayoutConstraint(item: self.interfaceBuilderLabel, attribute: NSLayoutAttribute.Left, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Left, multiplier: 1, constant: 20))
        self.view.addConstraint(NSLayoutConstraint(item: self.interfaceBuilderLabel, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Height, multiplier: 1, constant: -40))
        self.view.addConstraint(NSLayoutConstraint(item: self.interfaceBuilderLabel, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: NSLayoutAttribute.Width, multiplier: 1, constant: -40))
        
        self.interfaceBuilderButton.backgroundColor = UIColor.whiteColor()
        self.interfaceBuilderButton.setTitle("Touch", forState: UIControlState.Normal)
        self.interfaceBuilderButton.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
        self.view.addConstraint(NSLayoutConstraint(item: self.interfaceBuilderButton, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: self.interfaceBuilderLabel, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: -20))
        self.view.addConstraint(NSLayoutConstraint(item: self.interfaceBuilderButton, attribute: NSLayoutAttribute.Left, relatedBy: NSLayoutRelation.Equal, toItem: self.interfaceBuilderLabel, attribute: NSLayoutAttribute.Left, multiplier: 1, constant: 20))
        self.view.addConstraint(NSLayoutConstraint(item: self.interfaceBuilderButton, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: self.interfaceBuilderLabel, attribute: NSLayoutAttribute.Width, multiplier: 1, constant: -40))
    }
    @IBAction func touchUpInside(sender: UIButton!)
    {
        self.interfaceBuilderLabel.text = "Touched"
    }
}