unity缓存图片到本地

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.UI;

using System.Reflection;

using System.IO;

public class test : MonoBehaviour

{

Sprite sp;

public Image tu;

public void Awake()

{

string path = Application.persistentDataPath + "/图片.png";

if (File.Exists(path))//

{

StartCoroutine(jiazaitupian(path));

}

else

{

StartCoroutine(DownloadPictures("http://img.520zhxx.com:8033/touxiang/2014/12/21/22/201412212213531316.jpg"));

}

}

IEnumerator DownloadPictures(string path)//网上下载图片的协程

{

WWW www = new WWW(path);

yield return www;

sp = Sprite.Create(www.texture,new Rect(0,0,www.texture.width,www.texture.height),Vector2.zero);

while (sp == null)

{

break;

}

tu.sprite = sp;

FileStream fs = new FileStream(Application.persistentDataPath + "/图片.png",FileMode.Create);

fs.Write(www.bytes,0,www.bytes.Length);

fs.Dispose();

}

IEnumerator jiazaitupian(string path)//本地加载图片的协程

{

WWW www = new WWW(path);

yield return www;

sp = Sprite.Create(www.texture, new Rect(0, 0, www.texture.width, www.texture.height), Vector2.zero);

tu.sprite = sp;

}

}