我试图从两个UITextFields计算两个值。我所做的是使answerScreen
等于valueOne
,我把它变成了Int
和valueTwo
,这应该是与!
变种相反。有人可以告诉我我做错了什么吗?Swift - 两个UITextFeild的值相乘
import UIKit
class ViewController: UIViewController {
// The answer will be here
@IBOutlet weak var answerScreen: UILabel!
// The first number
@IBOutlet weak var valueOne: UITextField!
// The second number
@IBOutlet weak var valueTwo: UITextField!
// The equals button
@IBAction func calculateValues(sender: AnyObject) {
answerScreen.text = valueOne.text.toInt() * valueTwo!
}
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
你是什么意思 “的变种相反” 是什么意思? – fluidsonic 2014-10-01 02:27:32