Unity选择文件或者文件路径的方法

一、引用对应的库文件：https://download.csdn.net/download/xiaochenxihua/10952819

二、编写对应的控制脚本

/***
*	Title："智慧工厂" 项目
*		主题：打开文件
*	Description：
*		功能：XXX
*	Date：2019
*	Version：0.1版本
*	Author：Coffee
*	Modify Recoder：
*/

using UnityEngine;
using System.Collections;
using System;
using System.Runtime.InteropServices;

namespace kernal
{
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]

    public class OpenSelectFileName
	{
        public int structSize = 0;
        public IntPtr dlgOwner = IntPtr.Zero;
        public IntPtr instance = IntPtr.Zero;
        public String filter = null;
        public String customFilter = null;
        public int maxCustFilter = 0;
        public int filterIndex = 0;
        public String file = null;
        public int maxFile = 0;
        public String fileTitle = null;
        public int maxFileTitle = 0;
        public String initialDir = null;
        public String title = null;
        public int flags = 0;
        public short fileOffset = 0;
        public short fileExtension = 0;
        public String defExt = null;
        public IntPtr custData = IntPtr.Zero;
        public IntPtr hook = IntPtr.Zero;
        public String templateName = null;
        public IntPtr reservedPtr = IntPtr.Zero;
        public int reservedInt = 0;
        public int flagsEx = 0;

	}//Class_end


}

/***
*	Title："智慧工厂" 项目
*		主题：本地弹窗
*	Description：
*		功能：XXX
*	Date：2019
*	Version：0.1版本
*	Author：Coffee
*	Modify Recoder：
*/

using System.Runtime.InteropServices;


namespace Kernal
{
    public class LocalDialog
    {
        //链接指定系统函数       打开文件对话框
        [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
        public static extern bool GetOpenFileName([In, Out] OpenSelectFileName ofn);
        public static bool GetOFN([In, Out] OpenSelectFileName ofn)
        {
            return GetOpenFileName(ofn);
        }

        //链接指定系统函数        另存为对话框
        [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
        public static extern bool GetSaveFileName([In, Out] OpenSelectFileName ofn);
        public static bool GetSFN([In, Out] OpenSelectFileName ofn)
        {
            return GetSaveFileName(ofn);
        }
    }//Class_end
}

 

/***
*	Title："智慧工厂" 项目
*		主题：选择资源或者路径方法
*	Description：
*		功能：XXX
*	Date：2019
*	Version：0.1版本
*	Author：Coffee
*	Modify Recoder：
*/


using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace kernal
{
    public class SelectFileOrPath 
	{
        private static SelectFileOrPath _Instance;                              //本类实例

        #region   属性
        private string _SelectFilePath;                                         //选择的文件路径
        private string _SelectFile;                                             //选择文件
        private string _FileName;                                               //文件名称


        //选择文件路径
        public string SelectFilePath
        {
            get
            {
                return _SelectFilePath;
            }

            set
            {
                _SelectFilePath = value;
            }
        }
        //选择文件
        public string SelectFile
        {
            get
            {
                return _SelectFile;
            }

            set
            {
                _SelectFile = value;
            }
        }

        //文件名称
        public string FileName
        {
            get
            {
                return _FileName;
            }

            set
            {
                _FileName = value;
            }
        }


        #endregion

        /// 

        /// 本类实例
        /// 
        /// 
        public static SelectFileOrPath GetInstance()
        {
            if (_Instance==null)
            {
                _Instance = new SelectFileOrPath();
            }
            return _Instance;
        }



        /// 

        /// 选择文件路径(Unity自带的方法)
        /// 
        public void SelectFolderPath_Unity()
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            if (fbd.ShowDialog() == DialogResult.OK)
            {
                SelectFilePath = fbd.SelectedPath;
            }
        }

        /// 

        /// 选择文件(Unity自带的方法)
        /// 
        public void SelectFileSelf_Unity()
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.InitialDirectory = "file://" + UnityEngine.Application.dataPath;//默认打开路径 
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                SelectFile = ofd.FileName;
            }
        }

        /// 

        /// 选择文件路径（调用Windows方法）
        /// 
        public void SelectFilePath_Windows()
        {
            OpenSelectFileName openFileName = new OpenSelectFileName();
            openFileName.structSize = Marshal.SizeOf(openFileName);
            openFileName.filter = "PDF文件(*.PDF)\0*.PDF|数据库文件(*.bak)\0*.bak|*.*\0*.*";
            openFileName.file = new string(new char[256]);
            openFileName.maxFile = openFileName.file.Length;
            openFileName.fileTitle = new string(new char[64]);
            openFileName.maxFileTitle = openFileName.fileTitle.Length;
            openFileName.initialDir = UnityEngine.Application.streamingAssetsPath.Replace('/', '\\');//默认路径
            openFileName.title = "请选择路径或者文件";
            openFileName.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000008;

            if (LocalDialog.GetSaveFileName(openFileName))
            {
                SelectFilePath = openFileName.file;
                FileName= openFileName.file;
            }
        }

    }//Class_end
}

三、测试方法

/***
*	Title："智慧工厂" 项目
*		主题：测试选择路径或文件
*	Description：
*		功能：XXX
*	Date：2019
*	Version：0.1版本
*	Author：Coffee
*	Modify Recoder：
*/

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Control;
using kernal;

namespace SimpleUIFrame
{
	public class Test_BackUpSqlServerDatabase : MonoBehaviour
	{
        private string _BackUpPath;                                             //备份路径

		void Start()
		{
			
		}


        private void Update()
        {
            if (Input.GetKeyDown(KeyCode.X))
            {
                bool isSuccess = false;
                //选择备份路径
                SelectFileOrPath.GetInstance().SelectFilePath_Windows();
                _BackUpPath = SelectFileOrPath.GetInstance().SelectFilePath;
                if (!string.IsNullOrEmpty(_BackUpPath))
                {
                    Debug.Log("备份文件的路径=" + _BackUpPath);


            }



    }//Class_end
}

四、效果图如下 

 

注意：参考内容：https://www.jianshu.com/p/e3ef2f45bda0

                             http://gad.qq.com/article/detail/37380