Unity3D实现登陆注册功能，实现本地存储读取

untiy登录注册功能的实现，可以永久本地存储。C#源代码，也可以用相同的办法存储读取玩家的其他信息或自定义的游戏设置

实现了判断用户名是否存在，密码是否前后一致，密码是否正确等。

这是注册界面功能

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using System.IO;
public class Register : MonoBehaviour
{
    /// <summary>确认按钮</summary>
    public Button ConfirmBtn;
    /// <summary>取消按钮</summary>
    public Button CancelBtn;


    /// <summary>注册界面输入用户名</summary>
    public InputField InputUserName;
    /// <summary>注册界面输入密码</summary>
    public InputField InputPassWord;
    /// <summary>注册界面确认密码</summary>
    public InputField ConfirmPassWord;

    /// <summary>用户名提示错误</summary>
    public Text UserNameText;
    /// <summary>密码前后不一致提示错误</summary>
    public Text PassWordText;



    private StreamWriter WriterUserName;
    private StreamWriter WriterPassWord;

    /// <summary>用户名保存路径</summary>
    private string UserNamePath;
    /// <summary>密码保存路径</summary>
    private string PasswordPath;

    private void Awake()
    {
        ConfirmBtn.onClick.AddListener(StorageBtn);
        CancelBtn.onClick.AddListener(Cancel);
        UserNamePath = Application.streamingAssetsPath + "/UserName.txt";
        PasswordPath = Application.streamingAssetsPath + "/Password.txt";
    }
    void Start()
    {
        InputUserName.onValueChanged.AddListener(UserNameInput);
        ConfirmPassWord.onValueChanged.AddListener(PassWordInput);
        UserNameText.text = "";
        PassWordText.text = "";

    }


    void Update()
    {
        if (Input.GetKeyDown(KeyCode.W))
        {
            EmptyData();
        }
    }
    /// <summary>
    /// 用户名输入框检测输入
    /// </summary>
    /// <param name="str"></param>
    void UserNameInput(string str)
    {
        UserNameText.text = "";
    }
    /// <summary>
    /// 确认密码输入框检测输入
    /// </summary>
    /// <param name="str"></param>
    void PassWordInput(string str)
    {
        PassWordText.text = "";
    }
    /// <summary>
    /// 点击取消
    /// </summary>
    void Cancel()
    {
        PassWordText.text = "";
        UserNameText.text = "";
        StorageInput.Instance.RegisterUI.SetActive(false);
        StorageInput.Instance.LoginUI.SetActive(true);
    }

    /// <summary>
    /// 点击确认
    /// </summary>
    void StorageBtn()
    {
        string[]  m_StrUserNameData = File.ReadAllLines(Application.streamingAssetsPath + "/UserName.txt");
        if (InputUserName.text == "")
        {
            UserNameText.text = "请输入用户名";
            return;
        }
        if ( InputPassWord.text == "")
        {
            PassWordText.text = "请输入密码";
            return;
        }
        foreach (string item in m_StrUserNameData)
        {
            if (InputUserName.text == item)
            {
                UserNameText.text = "用户名已存在，请重新输入";
                return;
            }
        }
        if (InputPassWord.text == "")
        {
            PassWordText.text = "请输入密码";
            return;
        }
        if (InputPassWord.text != ConfirmPassWord.text)
        {
            PassWordText.text = "密码前后不一致";

            return;
        }
        try
        {
            WriteIntoName(InputUserName.text);
            WriteIntoPassWord(InputPassWord.text);
            StorageInput.Instance.RegisterUI.SetActive(false);
            StorageInput.Instance.LoginUI.SetActive(true);
            Debug.LogError("注册成功");

        }
        catch (System.Exception e)
        {
            Debug.LogError("注册失败");
            Debug.LogError(e);
            throw;
        }
    }
    /// <summary>
    /// 将用户名写入
    /// </summary>
    /// <param name="Name">需要写入的信息</param>
    public void WriteIntoName(string Name)
    {
        FileInfo UeserName = new FileInfo(UserNamePath);
        if (!UeserName.Exists)
        {
            WriterUserName = UeserName.CreateText();
        }
        else
        {
            WriterUserName = UeserName.AppendText();
        }
        WriterUserName.WriteLine(Name);
        WriterUserName.Flush();
        WriterUserName.Dispose();
        WriterUserName.Close();
    }
    /// <summary>
    /// 将密码写入
    /// </summary>
    /// <param name="Password"></param>
    public void WriteIntoPassWord(string Password)
    {

        FileInfo PassWord = new FileInfo(PasswordPath);
        if (!PassWord.Exists)
        {
            WriterPassWord = PassWord.CreateText();
        }
        else
        {
            WriterPassWord = PassWord.AppendText();
        }
        WriterPassWord.WriteLine(Password);
        WriterPassWord.Flush();
        WriterPassWord.Dispose();
        WriterPassWord.Close();
    }
    /// <summary>
    /// 清空用户名和密码
    /// </summary>
    public void EmptyData()
    {
        FileInfo UserName = new FileInfo(UserNamePath);
        FileInfo Password = new FileInfo(PasswordPath);
        if (UserName.Exists)
        {
            UserName.Delete();
            UserName.Refresh();
        }
        if (Password.Exists)
        {
            Password.Delete();
            Password.Refresh();
        }
    }
}

以下是登录页功能

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using System.IO;
public class StorageInput : MonoBehaviour
{
    public static StorageInput Instance;
    /// <summary>注册界面</summary>
    public  GameObject RegisterUI;
    /// <summary>登录界面</summary>
    public GameObject LoginUI;
    /// <summary>注册按钮</summary>
    public Button RegisterBtn;
    /// <summary>登录按钮</summary>
    public Button LoginBtn;

    /// <summary>登录界面输入用户名</summary>
    public InputField InputUserName;
    /// <summary>登录界面输入密码</summary>
    public InputField InputPassWord;

  

    /// <summary>登录界面用户名不存在</summary>
    public Text UserNameWrong;
    /// <summary>登录界面密码错误</summary>
    public Text PassWordWrong;

    /// <summary>拿到用户名配置表</summary>
    private string[] m_StrUserNameData;
    /// <summary>拿到密码配置表</summary>
    private string[] m_StrPassWordData;


    void Start()
    {
        Instance = this;
        RegisterBtn.onClick.AddListener(RegisterEvent);
        LoginBtn.onClick.AddListener(Login);

        InputUserName.onValueChanged.AddListener(UserNameInput);
        InputPassWord.onValueChanged.AddListener(PassWordInput);

        RegisterUI = GameObject.Find("注册界面");
        LoginUI = GameObject.Find("登录界面");
        RegisterUI.SetActive(false);
        LoginUI.SetActive(true);
        UserNameWrong.text = "";
        PassWordWrong.text = "";
    }

    // Update is called once per frame
    void Update()
    {
      
    }
    /// <summary>
    /// 用户名输入框检测输入
    /// </summary>
    /// <param name="str"></param>
    void UserNameInput(string str)
    {
        UserNameWrong.text = "";
    }
    /// <summary>
    /// 确认密码输入框检测输入
    /// </summary>
    /// <param name="str"></param>
    void PassWordInput(string str)
    {
        PassWordWrong.text = "";
    }
    /// <summary>
    /// 点击注册
    /// </summary>
    private void RegisterEvent()
    {
        InputUserName.text = "";
        InputPassWord.text = "";
        RegisterUI.SetActive(true);
        LoginUI.SetActive(false);

    }
    /// <summary>
    /// 登录
    /// </summary>
    void Login()
    {
        m_StrUserNameData = File.ReadAllLines(Application.streamingAssetsPath + "/UserName.txt");
        m_StrPassWordData = File.ReadAllLines(Application.streamingAssetsPath + "/Password.txt");
        if (InputUserName.text == "")
        {
            UserNameWrong.text = "用户名不能为空";
            return;
        }
        else
        {
            if (InputPassWord.text == "")
            {
                PassWordWrong.text = "请输入密码";
                return;
            }
        }
        for (int i = 0; i < m_StrUserNameData.Length; i++)
        {
            if (InputUserName.text == m_StrUserNameData[i])
            {
                if (InputPassWord.text == m_StrPassWordData[i])
                {
                    LoginUI.SetActive(false);
                    RegisterUI.SetActive(false);
                    return;
                }
                if (InputPassWord.text != m_StrPassWordData[i])
                {
                    PassWordWrong.text = "密码错误";
                    return;
                }
            }
        }
        foreach (string item in m_StrUserNameData)
        {
            if (InputUserName.text != item)
            {
                UserNameWrong.text = "用户名不存在，请注册";
                return;
            }
        }
    }
}