unity3d 上传本地PC图片

网上有两个常用的方法，我先用了第一种。第一种方法：需要注意三点，首先导入system.window.Forms.dll库，导进去后一定记得要修改playersetting下的optimization->API compatibility level为.NET 2.0，至于为什么改成这样，可以参考unity3d 的解释：http://game.ceeger.com/Manual/MobileDotnet.html。还要注意一点：加载的本地图片地址一定不能带有中文路径另外，www新建的时候要加上“file://” + url;

WWW www = new WWW("file://" + url);  //注意要加上"file://"

只需要一个脚本，其中代码如下：

using UnityEngine;using System.Collections;using System.Windows.Forms;using System.IO;public class UploadImg: MonoBehaviour {	public Texture2D img = null;  	void OnGUI()  	{  		if (GUI.Button(new Rect(0, 0, 100, 20), "选择文件"))  		{  						OpenFileDialog od = new OpenFileDialog();  			od.Title = "请选择头像图片";  			od.Multiselect = false;  			od.Filter = "图片文件(*.jpg,*.png,*.bmp)|*.jpg;*.png;*.bmp";  			if (od.ShowDialog() == DialogResult.OK)  			{  				Debug.Log(od.FileName);				StartCoroutine(GetTexture(od.FileName));  			}  		}  		if (img != null)  		{  			GUI.DrawTexture(new Rect(0, 20, img.width/2, img.height/2), img);  		}  	}  		IEnumerator GetTexture(string url)  	{  		WWW www = new WWW("file://" + url);  //注意要加上"file://"		yield return www;  		if (www.isDone)  		{  			img = www.texture;      		}  	}  }

效果是这样的，但是感觉和win7风格差的太远第二种方法看起来要炫多了：需要两个脚本。OpenFileName.cs如下：

using UnityEngine;  using System.Collections;  using System;  using System.Runtime.InteropServices;  [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 class WindowDll  {  	[DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]  	public static extern bool GetOpenFileName([In, Out] OpenFileName ofn);  	public static bool GetOpenFileName1([In, Out] OpenFileName ofn)  	{  		return GetOpenFileName(ofn);  	}  }  

UploadImage.cs如下：

using UnityEngine;using System.Collections;using System.Runtime.InteropServices;public class Upload : MonoBehaviour {	public Texture2D img = null;	private bool click = false;	void OpenDialog()	{		click = true;	}	void EnterImage()	{		OpenFileName ofn = new OpenFileName();		ofn.structSize = Marshal.SizeOf(ofn);  				ofn.filter = "All Files\0*.*\0\0";  				ofn.file = new string(new char[256]);  				ofn.maxFile = ofn.file.Length;  				ofn.fileTitle = new string(new char[64]);  				ofn.maxFileTitle = ofn.fileTitle.Length;  				ofn.initialDir = UnityEngine.Application.dataPath;//默认路径  				ofn.title = "Open Project";  				ofn.defExt = "JPG";//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(WindowDll.GetOpenFileName(ofn))		{			StartCoroutine(GetTexture(ofn.file));		}	}	IEnumerator GetTexture(string url)	{		WWW wwwTexture = new WWW ("file://" + url);		yield return wwwTexture;		if(wwwTexture.isDone)			img = wwwTexture.texture;	}	void OnGUI()	{		if(click)		{			EnterImage();			click = false;		}		if (img != null)			GUI.DrawTexture (new Rect(Screen.width/2 - img.width/2,Screen.height/2 - img.height,img.width,img.height),img);	}	}