用户在文本字段中键入后如何将标签文本更改为消息？

Question

所以我对编码非常陌生，我正在上课，学习如何在xcode中创建应用程序。我们被分配从头开始制作我们的第一个应用程序。我的想法是制作一个猜谜游戏，用户近距离拍照，他们必须猜测它是什么。我希望它在标签，文本字段和按钮的位置。他们在文本字段中键入他们的猜测，单击按钮检查他们的答案，然后标签文本更改说＆＃34;你错了＆＃34;或者你是对的＆＃34;。我已经看了很多，并且根据在文本字段中输入的内容，找不到更改标签文本的方法。我假设我会使用if-else语句，但似乎只适用于整数。有什么帮助吗？我也连接了所有东西。非常感谢提前！

Answer 1

你去了：

import UIKit
import WebKit

class ViewController: UIViewController{



    var dictionaryForQuestionAndAnswer  = ["what is the best way to learn coding?":"trying","who is best person to ask question?":"Google"]

    @IBOutlet weak var questionLabel: UILabel!

    @IBOutlet weak var textField: UITextField!

    var answerIndex = 0
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        questionLabel.text = ""


    }



    @IBAction func questionClicked(_ sender: Any) {

        let random  = randomInt(min: 1, max: 2)

        if(random == 1)
        {
            answerIndex = 1
           questionLabel.text = "what is the best way to learn coding?"
        }
        else
        {
            answerIndex = 2

            questionLabel.text = "who is best person to ask question?"

        }
    }

    @IBAction func answerClicked(_ sender: Any) {

        if let answer = textField.text
        {
            if( answerIndex == 1 && answer == dictionaryForQuestionAndAnswer["what is the best way to learn coding?"])
            {
                questionLabel.text = "You are correct"
            }
            else if( answerIndex == 2 && answer == dictionaryForQuestionAndAnswer["who is best person to ask question?"])
            {
                questionLabel.text = "You are correct"
            }

            else
            {
                questionLabel.text = "You are wrong"
            }


        }
    }

    func randomInt(min: Int, max:Int) -> Int {
        return min + Int(arc4random_uniform(UInt32(max - min + 1)))
    }




    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }



}

输出