iOS开发Swift-3-UI与按钮Button-摇骰子App

1.创建新项目Dice

 2.图标

 删去AppIcon，将解压后的AppIcon.appiconset文件拖入Assets包。

 3.将素材点数1-6通过网页制作成2x，3x版本并拖入Asset。

 4.设置对应的UI。

 5.拖入Button组件并设置style。

 6.Ctrl加拖拽将Button拖拽到ViewController里，并设置Connection，Name等，并点击Connect。

 同样方式创建两个骰子的代码。

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var diceImageView1: UIImageView!
    
    @IBOutlet weak var diceImageView2: UIImageView!
    
    @IBAction func roll(_ sender: Any) {
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

 7.继续编写代码创造随机数。

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var diceImageView1: UIImageView!
    
    @IBOutlet weak var diceImageView2: UIImageView!
    
    @IBAction func roll(_ sender: Any) {
        var index1: Int = Int.random(in: 1...6)
        var index2: Int = Int.random(in: 1...6)
        diceImageView1.image = UIImage(named: "dice\(index1)")
        diceImageView2.image = UIImage(named: "dice\(index2)")    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

8.启动运行

9.程序加载时就随机扔骰子

import UIKit

class ViewController: UIViewController {
    
    let diceArr = ["dice1", "dice2", "dice3", "dice4", "dice5", "dice6"]

    @IBOutlet weak var diceImageView1: UIImageView!
    
    @IBOutlet weak var diceImageView2: UIImageView!
    
    @IBAction func roll(_ sender: Any) {
        //调用摇骰子函数
        updateDiceImages()
    }
    
    //当程序加载的时候的活动
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        //调用摇骰子函数
        updateDiceImages()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    func updateDiceImages(){
        var index1: Int = Int.random(in: 0...5)
        var index2: Int = Int.random(in: 0...5)
        
        diceImageView1.image = UIImage(named: diceArr[index1])
        diceImageView2.image = UIImage(named: diceArr[index2])    }
    
}

10.当用户摇晃骰子后调用摇骰子函数。

import UIKit

class ViewController: UIViewController {
    
    let diceArr = ["dice1", "dice2", "dice3", "dice4", "dice5", "dice6"]

    @IBOutlet weak var diceImageView1: UIImageView!
    
    @IBOutlet weak var diceImageView2: UIImageView!
    
    @IBAction func roll(_ sender: Any) {
        //调用摇骰子函数
        updateDiceImages()
    }
    
    //当程序加载的时候的活动
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        //调用摇骰子函数
        updateDiceImages()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    func updateDiceImages(){
        var index1: Int = Int.random(in: 0...5)
        var index2: Int = Int.random(in: 0...5)
        
        diceImageView1.image = UIImage(named: diceArr[index1])
        diceImageView2.image = UIImage(named: diceArr[index2])    }
    
    //当用户摇晃手机时触发摇骰子
    override func motionEnded(_ motion: UIEventSubtype, with event: UIEvent?) {
        updateDiceImages()
    }
    
}