#11 瘋狂購物 App — UIStepper 和數字變字串練習

程式碼:

import UIKit
class shopTableViewController: UITableViewController {
@IBOutlet weak var firstStepper: UIStepper!
@IBOutlet weak var secondStepper: UIStepper!
@IBOutlet weak var thirdStepper: UIStepper!
@IBOutlet weak var fourthStepper: UIStepper!
@IBOutlet weak var totalLabel: UILabel!
@IBOutlet var quantityLabel: [UILabel]!
var price1 = 0
var price2 = 0
var price3 = 0
var price4 = 0
@IBAction func pressed(_ sender: UIStepper) {
switch sender {
case self.firstStepper :
self.firstStepper.minimumValue = 0
self.firstStepper.maximumValue = 10000000000
self.firstStepper.stepValue = 1
self.price1 = Int(self.firstStepper.value)
self.quantityLabel[0].text = “\(self.price1)”
self.totalLabel.text = “\(String( self.price1 * 4800 + self.price2 * 8900 + self.price3 * 8900 + self.price4 * 7400 ))元”
case self.secondStepper :
self.secondStepper.minimumValue = 0
self.secondStepper.maximumValue = 10000000000
self.secondStepper.stepValue = 1
self.price2 = Int(self.secondStepper.value)
self.quantityLabel[1].text = “\(self.price2)”
self.totalLabel.text = “\(String( self.price1 * 4800 + self.price2 * 8900 + self.price3 * 8900 + self.price4 * 7400 ))元”
case self.thirdStepper :
self.thirdStepper.minimumValue = 0
self.thirdStepper.maximumValue = 10000000000
self.thirdStepper.stepValue = 1
self.price3 = Int(self.thirdStepper.value)
self.quantityLabel[2].text = “\(self.price3)”
self.totalLabel.text = “\(String( self.price1 * 4800 + self.price2 * 8900 + self.price3 * 8900 + self.price4 * 7400 ))元”
case self.fourthStepper :
self.fourthStepper.minimumValue = 0
self.fourthStepper.maximumValue = 10000000000
self.fourthStepper.stepValue = 1
self.price4 = Int(self.fourthStepper.value)
self.quantityLabel[3].text = “\(self.price4)”
self.totalLabel.text = “\(String( self.price1 * 4800 + self.price2 * 8900 + self.price3 * 8900 + self.price4 * 7400 ))元”
default :
break
}
}

TingKai-Chen/Peter_Homework11