【課題】Part7 足し算と引き算を行うタブアプリ

AdditionViewController.swift

import UIKit

class AdditionViewController: UIViewController {
    
    @IBOutlet weak var target1Text: UITextField!
    @IBOutlet weak var target2Text: UITextField!
    
    @IBOutlet weak var resultLabel: UILabel!
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
    
    @IBAction func Add(sender: AnyObject) {
        let target1 = (self.target1Text.text as NSString).integerValue
        let target2 = (self.target2Text.text as NSString).integerValue
        // 足し算を行う
        self.resultLabel.text = "\(target1 + target2)"
        
        // キーボードを隠す
        self.target1Text.resignFirstResponder()
        self.target2Text.resignFirstResponder()
    }
}

SubtractionViewController.swift

import UIKit

class SubtractionViewController: UIViewController {

    @IBOutlet weak var target1Text: UITextField!
    @IBOutlet weak var target2Text: UITextField!
    
    @IBOutlet weak var resultLabel: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
    
    @IBAction func subtract(sender: AnyObject) {
        let target1 = (self.target1Text.text as NSString).integerValue
        let target2 = (self.target2Text.text as NSString).integerValue
        // 引き算を行う
        self.resultLabel.text = "\(target1 - target2)"
        
        // キーボードを隠す
        self.target1Text.resignFirstResponder()
        self.target2Text.resignFirstResponder()
    }
}