using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.UI;public class ImageTest : MonoBehaviour
{/// <summary>/// Image控件/// </summary>private Image image;void Start(){image = this.transform.Find("Image").GetComponent<Image>();//为不同的按钮绑定不同的事件this.transform.Find("LoadByWWW").GetComponent<Button>().onClick.AddListener(delegate () { LoadByWWW(); });this.transform.Find("LoadByIO").GetComponent<Button>().onClick.AddListener(delegate () { LoadByIO(); });}/// <summary>/// 以IO方式进行加载/// </summary>private void LoadByIO(){// double startTime = (double)Time.time;//创建文件读取流FileStream fileStream = new FileStream(Application.dataPath+ "/UI/Basic Information/Common/Add.png", FileMode.Open, FileAccess.Read);fileStream.Seek(0, SeekOrigin.Begin);//创建文件长度缓冲区byte[] bytes = new byte[fileStream.Length];//读取文件fileStream.Read(bytes, 0, (int)fileStream.Length);//释放文件读取流
        fileStream.Close();fileStream.Dispose();fileStream = null;//创建Textureint width = 300;int height = 372;Texture2D texture = new Texture2D(width, height);texture.LoadImage(bytes);//创建SpriteSprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height), new Vector2(0.5f, 0.5f));image.sprite = sprite;//startTime = (double)Time.time - startTime;//Debug.Log("IO加载用时:" + startTime);
    }/// <summary>/// 以WWW方式进行加载/// </summary>private void LoadByWWW(){StartCoroutine(Load());}IEnumerator Load(){double startTime = (double)Time.time;//请求WWW//WWW www = new WWW("file://D:\\test.jpg");string path= (Application.dataPath + "/UI/Basic Information/Common/Add.png");WWW www=new WWW("file://"+path);yield return www;if (www != null && string.IsNullOrEmpty(www.error)){//获取TextureTexture2D texture = www.texture;//创建SpriteSprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height), new Vector2(0.5f, 0.5f));image.sprite = sprite;startTime = (double)Time.time - startTime;Debug.Log("WWW加载用时:" + startTime);}}
}

原文链接http://blog.csdn.net/qinyuanpei/article/details/48262583