ios - 我的键盘不会切换 : neither endEditing nor resignFirstResponder works

Question

我正在使用文本字段，文本字段所在的 View 是由UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "nickNameInput") 作为!弹出 View Controller 。

这是一个 PopupViewController。

问题是当我打电话textField.resignFirstResponder() 或 self.view.endEditing(true) ，它们都不起作用...

我很难过。有人可以帮帮我吗？

    import UIKit

    class PopupViewController: UIViewController, UITextFieldDelegate{
    @IBOutlet weak var editingEndBtn: UIButton!
    @IBOutlet weak var textField: UITextField!
    var inputString = ""

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white
        let blurEffect = UIBlurEffect(style: .extraLight)
        let blurView = UIVisualEffectView(effect: blurEffect)
        view.insertSubview(blurView, at: 0)

        textField.delegate = self
        editingEndBtn.isEnabled = false
    }



    func textFieldDidBeginEditing(_ textField: UITextField) {    //delegate method
    }

    func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {  //delegate method
        inputString = textField.text!
        //print(inputString)
        if (inputString != ""){
            editingEndBtn.isEnabled = true
        }

        textField.resignFirstResponder()
         self.view.endEditing(true)
        return false
    }

    func textFieldShouldReturn(_ textField: UITextField) -> Bool {   //delegate method
       textField.resignFirstResponder()
        print("return is pushed")
        toggleKeyboard()
        return true
    }


}

Answer 1

问题就在这里

func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {   
    return false // this prevents it
}

你需要移除这个方法或者根据文本逻辑处理它而不像返回false一样

func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {
    inputString = textField.text! 
    return  inputString != ""
}