如何在小数键盘上显示完成按钮？

我正在尝试学习 Swift，并且我已经在视图屏幕上完成了。但是，通过检查屏幕截图，您可以更轻松地理解，当我在文本字段中输入值时，没有显示任何完成按钮，因此我无法从屏幕上隐藏键盘。这使得无法按下位于屏幕视图底部的提交按钮。

首先，创建一个新的Swift File。将其添加到文件中：

import Foundation
import UIKit

extension UIViewController{
    func toolBar() -> UIToolbar{
        let toolBar = UIToolbar()
        toolBar.barStyle = .default
        toolBar.isTranslucent = true
        toolBar.barTintColor = UIColor.init(red: 0/255, green: 25/255, blue: 61/255, alpha: 1) //Write what you want for color
        let space = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
        var buttonTitle = "Done" //Or "Tamam"
        var cancelButtonTitle = "Cancel" //Or "İptal" for Turkish
        let doneButton = UIBarButtonItem(title: buttonTitle, style: .done, target: self, action: #selector(onClickDoneButton))
        let cancelButton = UIBarButtonItem(title: cancelButtonTitle, style: .plain, target: self, action: #selector(onClickCancelButton))
        doneButton.tintColor = .white
        cancelButton.tintColor = .white
        toolBar.setItems([cancelButton, space, doneButton], animated: false)
        toolBar.isUserInteractionEnabled = true
        toolBar.sizeToFit()
        return toolBar
    }

    @objc func onClickDoneButton(){
        view.endEditing(true)
    }

    @objc func onClickCancelButton(){
        view.endEditing(true)
    }
}

并添加这个toolbar给你的textfield :

yourTextField.inputAccessoryView = toolBar()

希望能帮助到你...