Unity WWW下载图片并保存到Unity的Assets下

1.新建一个UGUI的Image.

2.新建一个脚本wwwTest.cs:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;
using UnityEngine.UI;


//图片下载测试
public class wwwTest : MonoBehaviour {

    WWW www;                     //请求
    string filePath;             //保存的文件路径
    Texture2D texture2D;         //下载的图片
    public Image m_image;  //场景中的一个image

    void Start ()
    {
        //保存路径
        filePath = Application.dataPath + "/Resources/picture.jpg";
        StartCoroutine(LoadImg());//开启一个协成
    }
   
    IEnumerator LoadImg()
    { 
        //开始下载图片
        www = new WWW("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1510112762201&di=0cb1080fa257b5b5c89620f6ff0cbade&imgtype=jpg&src=http%3A%2F%2Fimg1.imgtn.bdimg.com%2Fit%2Fu%3D909222868%2C1660214404%26fm%3D214%26gp%3D0.jpg");

        yield return www;

        //下载完成，保存图片到路径filePath
        texture2D = www.texture;
        byte[] bytes = texture2D.EncodeToPNG();
        File.WriteAllBytes(filePath, bytes);
    }
}

3.把wwwTest.cs拖到相机上,再把Image游戏对象拖到相机的wwwTest.cs脚本上.

4.运行.