killapp/Assets/Scripts/Managers/LanguageManager.cs

using System.Collections;
using System.Collections.Generic;
using System.Security.Cryptography.X509Certificates;
using System.Threading.Tasks;
using Newtonsoft.Json;
using UnityEngine;

namespace Kill.Managers
{
    public class LanguageManager : MonoBehaviour
    {
        public static LanguageManager Instance;

        [System.Serializable]
        public struct Language
        {
            public string key;
            public string zh;
            public string en;
        }
        [System.Serializable]
        public struct Country
        {
            public string code;
            public string name_zh;
            public string name_en;
        }

        List<Language> languageList;
        public List<Country> countryList;

        [System.Serializable]
        public enum LanguageType
        {
            Chinese,
            English
        }

        void Awake()
        {
            Instance = this;
            SetLanguageBySystem();
        }

        public LanguageType languageType = LanguageType.English;

        /// <summary>
        /// 根据系统语言自动设置 App 语言
        /// 只有简体中文和繁体中文显示中文，其他全部显示英文
        /// </summary>
        public void SetLanguageBySystem()
        {
            int type = PlayerPrefs.GetInt("LanguageType");
            if (type==0)
            {

                SystemLanguage systemLanguage = Application.systemLanguage;
                Debug.Log($"系统语言: {systemLanguage}");

                if (systemLanguage == SystemLanguage.Chinese ||
                    systemLanguage == SystemLanguage.ChineseSimplified ||
                    systemLanguage == SystemLanguage.ChineseTraditional)
                {
                    languageType = LanguageType.Chinese;
                    Debug.Log("设置语言为: 中文");
                }
                else
                {
                    languageType = LanguageType.English;
                    Debug.Log("设置语言为: 英文");
                }
            }
            else
            {
                languageType = (LanguageType)type-1;
            }
        }

        /// <summary>
        /// 手动设置语言
        /// </summary>
        public void SetLanguage(LanguageType type)
        {
            languageType = type;
            Debug.Log($"手动设置语言为: {type}");
            PlayerPrefs.SetInt("LanguageType",(int)type+1);
        }
        public async Task Init()
        {
            TextAsset textAsset = await LoadRes.Instance.LoadAssetAsync<TextAsset>("language", "language.json");
            languageList = JsonConvert.DeserializeObject<List<Language>>(textAsset.text);
            TextAsset countryAsset = await LoadRes.Instance.LoadAssetAsync<TextAsset>("language", "country.json");
            countryList = JsonConvert.DeserializeObject<List<Country>>(countryAsset.text);
            Debug.Log(countryList[0].name_zh);
        }
        public string GetLanguage(string key)
        {
            int index = languageList.FindIndex(x => x.key == key);
            if(index<0||index>=languageList.Count)
                index=0;
            if (languageType == LanguageType.Chinese)
                return languageList[index].zh;
            else
                return languageList[index].en;
        }
        public Country GetCountry(string code)
        {
            return countryList.Find((x)=>x.code==code);
        }
    }
}