iOS键盘语言更改时是否有委托调用？

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // 注册通知观察者
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardLanguageDidChange), name: UITextInputMode.currentInputModeDidChangeNotification, object: nil)
    }

    @objc func keyboardLanguageDidChange() {
        // 键盘语言更改时的委托调用
        print("键盘语言已更改")
    }
}