Unity中使用Sqlite存储本地数据

人生不过一瞬间2024-12-08 19:12

我的环境：win11、unity团结1.3.4

1.下载sqlite-net，将SQLite.cs 脚本导入Unity

2.下载各平台依赖项，如dll、aar 等。导入Unity并设置

3.简单列子，打包测试

csharp 复制代码

using System;
using System.IO;
using SQLite;
using UnityEngine;

public class NewBehaviourScript : MonoBehaviour
{
    public string databaseFile = "sqlite.db";

    public void Start()
    {
#if UNITY_EDITOR
        string path = Path.Combine(Directory.GetParent(Application.dataPath).FullName, databaseFile);
#elif UNITY_ANDROID
        string path = Path.Combine(Application.persistentDataPath, databaseFile);
#elif UNITY_IOS
        string path = Path.Combine(Application.persistentDataPath, databaseFile);
#else
        string path = Path.Combine(Application.dataPath, databaseFile);
#endif
        Debug.Log(path);

        // 创建数据库连接
        //SQLiteConnection第二个参数配置日期格式，默认Ticks
        var db = new SQLiteConnection(path, false);
        //打印sql语句
        db.Trace = true;
        db.Tracer = (sql) => UnityEngine.Debug.Log(sql);

        //创建表
        db.CreateTable<Users>();

        // 插入
        var user = new Users() { Name = "张三", Created = DateTime.Now };
        var user2 = new Users() { Name = "李四", Created = DateTime.Now };
        db.Insert(user);
        db.Insert(user2);
        // 查询
        var users = db.Table<Users>().Where(u => u.Name.StartsWith("张")).ToList();
        for (int i = 0; i < users.Count; i++)
        {
            Debug.Log(users[i]);
        }
    }
}

public class Users
{
    [PrimaryKey, AutoIncrement]
    public int Id { get; set; }
    public string Name { get; set; }

    public DateTime Created { get; set; }
    public bool IsDeleted { get; set; }

    public override string ToString()
    {
        return $"Id：{Id} 名字：{Name} 创建时间：{Created} 是否删除：{IsDeleted}";
    }
}

4.效果图，可以看到可以正常在pc/安卓上运行。

百度网盘 Unityt Sqlite测试工程

提取码：dq4n

其它参考：
https://github.com/praeclarum/sqlite-net/issues/1023
https://docs.unity3d.com/2022.1/Documentation/Manual/NativePlugins.html