如何使用 SWITCH 和 uiTextfield 变量快速更新标签

Question

我想制作一个小程序，当一个人在文本字段中输入“快乐”或“悲伤”时，标签会根据情况更新并说些什么……这是我的代码：

class ViewController: UIViewController {

    @IBOutlet weak var aiAnswer: UILabel!

    @IBOutlet weak var humanResponse: UITextField!

    // when user taps submit run this

    @IBAction func responseRequest(sender: AnyObject) {

    // check the variable humanResponse to see if they typed happy or sad and update the UI label based on that

        switch (humanResponse) {

        case "happy":

                aiAnswer.text = "thats great your happy!";

        case "sad":

                aiAnswer.text = "thats no fun!";

        default:

                aiAnswer.text = "please input a valid emotions";




        }


    }

Answer 1

我认为您的switch 案例有问题。像这样更新它：

switch humanResponse.text! {   //text entered by user

    case "happy":

        aiAnswer.text = "thats great your happy!";

    case "sad":

        aiAnswer.text = "thats no fun!";

    default:

        aiAnswer.text = "please input a valid emotions";

    }