版本：

swift 4，ios 11.2，smulater: iPhone X
隨機取得一個數字，並根據對應的數字顯示算命結果

1.畫面設定

2.設定大吉

3.大吉AutoLayout

4.適配iPhone X

5.添加Button

6.編寫代碼

//  ViewController.swift
//  FortuneTeller
//
//  Created by lin on 2018/3/24.
//  Copyright © 2018年 lin. All rights reserved.
//

import UIKit
import GameKit
import AudioToolbox

class ViewController: UIViewController {
    override var prefersStatusBarHidden: Bool{
        return true
    }

    @IBOutlet weak var yourFortune: UIImageView!

    @IBAction func tellMeSomething(_ sender: UIButton) {
        showAnswer()
    }

    override func motionEnded(_ motion: UIEventSubtype, with event: UIEvent?) {
        if event?.subtype == .motionShake{
            showAnswer()
        }
    }

    func showAnswer(){
        if yourFortune.isHidden == true{
            //show me the answer
            //1.make a random number 1~6
            let answer = GKRandomSource.sharedRandom().nextInt(upperBound:6) + 1
            //2.change image
            yourFortune.image = UIImage(named: "\(answer)")
            yourFortune.isHidden = false
            //3.sound
            AudioServicesPlaySystemSound(1000)            
        }else{
            //hide image
            yourFortune.isHidden = true
        }        
    }

    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.
    }
}