How can I show done button on the decimal pad keyboard?

问题

I'm trying to learn Swift and I've done on the view screens. But as you can understand more easily by checking the screenshot, when I enter a value into a text field, there isn't any done button showing up so I can not hide the keyboard from the screen. And that makes it impossible to press the submit button which is located bottom of the screen view.

回答1:

Firstly, create a new Swift File. Add this to the file :

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)
    }
}

And add this toolbar to your textfield :

yourTextField.inputAccessoryView = toolBar()

Hope it helps...

回答2:

You can add a toolbar as an input accessory :

     let toolBar = UIToolbar()
     toolBar.sizeToFit()
     let button = UIBarButtonItem(title: "Done", style: .plain, target: self, 
                                      action: #selector(dismiss))
     toolBar.setItems([button], animated: true)
     toolBar.isUserInteractionEnabled = true
     textField.inputAccessoryView = toolBar

Also you need to add dismiss method:

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

来源：https://stackoverflow.com/questions/61332009/how-can-i-show-done-button-on-the-decimal-pad-keyboard