unity 打开电脑本地文件夹
1.调用方法如下
这是选择路径
2.代码如下
using System; using System.IO; using System.Runtime.InteropServices; using UnityEngine; /// <summary> /// 调用系统代码,打开本地文件夹 /// </summary> [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public class OpenDialogFile { 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; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public class OpenDialogDir { public IntPtr hwndOwner = IntPtr.Zero; public IntPtr pidlRoot = IntPtr.Zero; public String pszDisplayName = null; public String lpszTitle = null; public UInt32 ulFlags = 0; public IntPtr lpfn = IntPtr.Zero; public IntPtr lParam = IntPtr.Zero; public int iImage = 0; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public class OpenFileName { 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; } public static class FolderBrowserHelper { #region Window [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)] private static extern bool GetOpenFileName([In, Out] OpenFileName ofn); [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)] private static extern bool GetSaveFileName([In, Out] OpenFileName ofn); [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)] private static extern bool GetOpenFileName([In, Out] OpenDialogFile ofn); [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)] private static extern bool GetSaveFileName([In, Out] OpenDialogFile ofn); [DllImport("shell32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)] private static extern IntPtr SHBrowseForFolder([In, Out] OpenDialogDir ofn); [DllImport("shell32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)] private static extern bool SHGetPathFromIDList([In] IntPtr pidl, [In, Out] char[] fileName); #endregion public const string IMAGEFILTER = "图片文件(*.jpg;*.png)\0*.jpg;*.png"; public const string ALLFILTER = "所有文件(*.*)\0*.*"; /// <summary> /// 选择文件 /// </summary> /// <param name="callback">返回选择文件夹的路径</param> /// <param name="filter">文件类型筛选器</param> public static void SelectFile(Action<string> callback, string filter = ALLFILTER) { try { OpenFileName openFileName = new OpenFileName(); openFileName.structSize = Marshal.SizeOf(openFileName); // openFileName.initialDir = "初始目录" openFileName.filter = filter; 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.title = "选择文件"; openFileName.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000008; if (GetSaveFileName(openFileName)) { string filepath = openFileName.file; //选择的文件路径; if (File.Exists(filepath)) { if (callback != null) callback(filepath); return; } } } catch (Exception e) { Debug.LogError(e); } if (callback != null) callback(string.Empty); } /// <summary> /// 调用WindowsExploer 并返回所选文件夹路径 /// </summary> /// <param name="dialogtitle">打开对话框的标题</param> /// <returns>所选文件夹路径</returns> public static string GetPathFromWindowsExplorer(string dialogtitle = "请选择下载路径") { try { OpenDialogDir ofn2 = new OpenDialogDir(); ofn2.pszDisplayName = new string(new char[2048]); ; // 存放目录路径缓冲区 ofn2.lpszTitle = dialogtitle; // 标题 ofn2.ulFlags = 0x00000040; // 新的样式,带编辑框 IntPtr pidlPtr = SHBrowseForFolder(ofn2); char[] charArray = new char[2048]; for (int i = 0; i < 2048; i++) { charArray[i] = '\0'; } SHGetPathFromIDList(pidlPtr, charArray); string res = new string(charArray); res = res.Substring(0, res.IndexOf('\0')); return res; } catch (Exception e) { Debug.LogError(e); } return string.Empty; } /// <summary> /// 打开目录 /// </summary> /// <param name="path">将要打开的文件目录</param> public static void OpenFolder(string path) { System.Diagnostics.Process.Start("explorer.exe", path); } }
3.选择一个文件夹,然后把文件夹里面的东西复制到另一个文件夹里面
/// <summary> /// 选择一个文件夹,然后把文件夹里面的东西复制到另一个文件夹里面 /// </summary> /// <param name="sourcePath">选择的路径</param> /// <param name="destPath">另一个路径</param> public void CopyFolder(string sourcePath, string destPath) { if (Directory.Exists(sourcePath)) { if (!Directory.Exists(destPath)) { try { Directory.CreateDirectory(destPath); } catch (Exception ex) { throw new Exception("创建目标目录失败:" + ex.Message); } } List<string> files = new List<string>(Directory.GetFiles(sourcePath)); files.ForEach(c => { string destFile = Path.Combine(destPath, Path.GetFileName(c)); File.Copy(c, destFile, true); }); List<string> folders = new List<string>(Directory.GetDirectories(sourcePath)); folders.ForEach(c => { string destDir = Path.Combine(destPath, Path.GetFileName(c)); CopyFolder(c, destDir); }); } else { throw new DirectoryNotFoundException("源目录不存在!"); } }
4.选择本地文件并打开
/// <summary> /// 选择本地文件并打开 /// </summary> public void onRead() { OpenFileName ofn = new OpenFileName(); ofn.structSize = Marshal.SizeOf(ofn); ofn.filter = "Excel文件(*.dxf)\0*.dxf"; ofn.file = new string(new char[256]); ofn.maxFile = ofn.file.Length; ofn.fileTitle = new string(new char[64]); ofn.maxFileTitle = ofn.fileTitle.Length; string path = Application.streamingAssetsPath; path = path.Replace('/', '\\'); //默认路径 ofn.initialDir = path; //ofn.initialDir = "D:\\MyProject\\UnityOpenCV\\Assets\\StreamingAssets"; ofn.title = "Open Project"; ofn.defExt = "DXF";//显示文件的类型 //注意 一下项目不一定要全选 但是0x00000008项不要缺少 ofn.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008;//OFN_EXPLORER|OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST| OFN_ALLOWMULTISELECT|OFN_NOCHANGEDIR if (ofn.file != "") { if (WindowDll.GetOpenFileName(ofn)) { Manager._Instantiate.LoadDXF(ofn.file); //print(ofn.file); OnClickAdd(ofn.file); GameManager.instance_.btn_shengcheng3wei.transform.GetChild(3).gameObject.SetActive(true); } else { GameManager.instance_.btn_shengcheng3wei.SetActive(false); GameManager.instance_.QuXiaoDaoRuCad(); } } }
