swift - 快速计算分数

Question

现在，我的问题是，当我尝试计算分数线时，如果一个人在文本字段中写入与“42”不同的内容(与 label.text 相同)，他们会得到扣1分。如果我写的东西不是“42”，它会给我 1 分，但只是第一次。如果我再次这样做，分数线不会改变，所以我将陷入 -1 分数线。

每次我写一些不是“42”的东西时，即使我已经得到了 -1 分，我该怎么做才能给我 -1 分？

(如您所见，如果您想知道，我已将 label.text 设置为与 textfield.text 相同)

import UIKit

    class ViewController: UIViewController, UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

        // MARK: PROBERTIES
        @IBOutlet weak var label: UILabel!

        @IBOutlet weak var textField: UITextField!
        @IBOutlet weak var scoreLabel: UILabel!

        @IBOutlet weak var photoImageView: UIImageView!
        @IBOutlet weak var label2: UILabel!
        @IBOutlet weak var label1: UILabel!
        let imagePicker = UIImagePickerController()

        override func viewDidLoad() {
            super.viewDidLoad()


            textField.delegate = self
            imagePicker.delegate = self

        }


        func textFieldShouldReturn(textField: UITextField) -> Bool {

            textField.resignFirstResponder()

            return true
        }
        func textFieldDidEndEditing(textfield: UITextField) {
            label.text = textField.text
            var score = 0


            if textField.text != "42" {
                score -= 1
            }

            // MARK: if-statements

            if label.text! == "42" {
                label1.text = "You are correct"
                self.view.backgroundColor = UIColor.greenColor()
                score += 10
            }

            if label.text != "42" {
                label1.text = "Damn, wrong"
                self.view.backgroundColor = UIColor.redColor()

            }

            if label.text!.isEmpty {
                label1.text = "Still waiting for an answer..."

            }

            if label.text == "happiness" {
                label1.text = "It is not a key element in the meaning of life"

            }

            if label.text == "to be happy" {
                label1.text = "i would rather be rich"

            }

            if label.text == "money" {
                label1.text = "there is more in this world than money"

            }

            if label.text == "There is no meaning of life" {
                label1.text = "There is a meaning to everything"

            }

            if label.text == "there is no meaning of life"
            {
                label1.text = "there is a meaning to everything"

            }

            if label.text == "to be rich" {
                label1.text = "Money does not solve every problem"


            }

            var scoreString = String(score)
            scoreLabel.text = "Your score is \(scoreString)"


        }

Answer 1

添加从 ViewController 对象到文本字段的 Editing Changed 导出的连接。当字段的文本更改时，无论您连接到什么方法都会被调用。