图片转码字节数组，字节数组转码图片

using System.Collections;

using System.Collections.Generic;

using System.IO;

using System.Text;

using UnityEngine;

using UnityEngine.UI;

public class Test : MonoBehaviour

{

    public RawImage leftImage;

    private string path = "\\Assets\\StreamingAssets\\001.jpg";

    WWW w;

    public byte[] FunTurnTo(string path)

    {

        FileStream fileStream = new FileStream(path, FileMode.Open, System.IO.FileAccess.Read);

        fileStream.Seek(0, SeekOrigin.Begin);

        byte[] buffer = new byte[fileStream.Length];

        fileStream.Read(buffer, 0, (int)fileStream.Length);

        fileStream.Close();

        fileStream.Dispose();

        fileStream = null;

        print(456);

        return buffer;

    }

    public void PicToByteArray()

    {

        byte[] bear =  FunTurnTo(System.Environment.CurrentDirectory + path);

        FileStream fs = new FileStream(System.Environment.CurrentDirectory + "\\Assets\\StreamingAssets\\666.jpg", FileMode.Create, FileAccess.Write);

        fs.Write(bear, 0, bear.Length);

        fs.Close();

        StartCoroutine(LoadPicOfStreamingAssets());

        leftImage.texture = w.texture;

        print(123);

    }

    IEnumerator LoadPicOfStreamingAssets()

    {

        w = new WWW(System.Environment.CurrentDirectory + "\\Assets\\StreamingAssets\\666.jpg");

        return w;

    }

}