Ios 如何使用SWITCH和uiTextfield变量更新swift中的标签

我想制作一个小程序，当一个人在文本字段中键入“happy”或“sad”时，标签会根据情况进行更新，并显示一些内容。。。这是我的密码：

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";




        }


    }

---

我认为您的

开关有问题。更新如下：

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";

    }