获取给定iOS键盘语言的所有可能字符的字符串

import UIKit

func getAllPossibleCharactersForCurrentKeyboardLanguage() -> String? {
    guard let currentInputMode = UITextInputMode.currentInputMode() else {
        return nil
    }
    
    guard let primaryLanguage = currentInputMode.primaryLanguage else {
        return nil
    }
    
    let locale = Locale(identifier: primaryLanguage)
    let allCharacters = locale.localizedString(forLanguageCode: primaryLanguage)
    
    return allCharacters
}

if let allCharacters = getAllPossibleCharactersForCurrentKeyboardLanguage() {
    print("所有可能字符: \(allCharacters)")
} else {
    print("无法获取当前键盘语言的所有可能字符")
}