#8 輸入條件顯示結果，比方擇偶條件，訂飲料，找主人 App

練習目的：學習 IBOutlet，IBAction 和 if else

成品 ：

code ：

import UIKit


class ViewController: UIViewController {
    
    @IBOutlet weak var nameTextField: UITextField!
    @IBOutlet weak var flavorSegment: UISegmentedControl!
    @IBOutlet weak var sugarSlider: UISlider!
    @IBOutlet weak var iceSlider: UISlider!
    @IBOutlet weak var materialSegment: UISegmentedControl!
    @IBOutlet weak var sugarLabel: UILabel!
    @IBOutlet weak var iceLabel: UILabel!
    @IBOutlet weak var resultLabel: UILabel!
    
    var drinks = "紅茶"
    var ice = "去冰"
    var sugar = "無糖"
    var material = "珍珠"

    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        resultLabel.text = "今天想喝點什麼！！"
    }
    //選擇飲料種類
    
    @IBAction func changeFlavor(_ sender: Any) {
        if flavorSegment.selectedSegmentIndex == 0 {
            drinks = "紅茶"
        }else if flavorSegment.selectedSegmentIndex == 1 {
            drinks = "綠茶"
        }else if flavorSegment.selectedSegmentIndex == 2 {
            drinks = "烏龍茶"
        }else {
            drinks = "奶茶"
        }
    }
    
    //甜度調整

    @IBAction func chageSugar(_ sender: Any) {
        sugarSlider.value.round()
        if sugarSlider.value == 1 {
            sugarLabel.text = "無糖"
        }else if sugarSlider.value == 2 {
            sugarLabel.text = "微糖"
        }else if sugarSlider.value == 3 {
            sugarLabel.text = "半糖"
        }else if sugarSlider.value == 4 {
            sugarLabel.text = "少糖"
        }else {
            sugarLabel.text = "全糖"
        }
    }
    
    //冰量調整

    @IBAction func changeIce(_ sender: Any) {
        iceSlider.value.round()
        if iceSlider.value == 1 {
            iceLabel.text = "去冰"
        }else if iceSlider.value == 2 {
            iceLabel.text = "少冰"
        }else if iceSlider.value == 3 {
            iceLabel.text = "微冰"
        }else {
            iceLabel.text = "正常冰"
        }
    }
    
    // 加料選項
    
    @IBAction func addMaterial(_ sender: Any) {
        if materialSegment.selectedSegmentIndex == 0 {
            material = "珍珠"
        }else if materialSegment.selectedSegmentIndex == 1 {
            material = "粉粿"
        }else if materialSegment.selectedSegmentIndex == 2 {
            material = "芋圓"
        }else {
            material = "椰果"
        }
    }
    
    //送出訂單
    @IBAction func orderMeal(_ sender: Any) {
        let name = nameTextField.text!
        if name == "" {
            resultLabel.text = "請輸入完整訂購資訊！！"
        }else {
            resultLabel.text = name+"今晚想喝點：\n\n"+drinks+sugarLabel.text!+iceLabel.text!+"\n加"+material
        }
        
        //點選button收鍵盤
        view.endEditing(true)
    }
    
    
}

github連結：

GitHub - ZengYahan/orderdrink