[unity3d]下载网上的图片并保存到本地
下面介绍一个下载一个网络资源保存到本地的例子,正好是现在项目中的需求。
using UnityEngine; using System.Collections; using System.IO; public class Download : MonoBehaviour { public string url = "http://ww3.sinaimg.cn/large/80dfe250jw1dle1r2v4t9j.jpg"; public GUIText Test; WWW www; Color Alpha; bool Appear = false; int a = 0; IEnumerator Start() { www = new WWW(url); //定义www为WWW类型并且等于所下载下来的WWW中内容。 yield return www; //返回所下载的www的值 renderer.material.shader = Shader.Find("Transparent/Diffuse"); renderer.material.mainTexture = www.texture; Texture2D newTexture = www.texture; byte[] pngData = newTexture.EncodeToPNG(); try { if (Application.platform == RuntimePlatform.Android) { File.WriteAllBytes(Application.persistentDataPath + "/ICO.png", pngData); } else { //File.WriteAllBytes(Application.dataPath + "/download/ICO.png", pngData); File.WriteAllBytes(Application.dataPath + "/ICO.png", pngData); } } catch(IOException e) { print(e); } Alpha = renderer.material.color; Alpha.a = 0; Appear = true; renderer.enabled = true; renderer.material.color = Alpha; //将下载下来的WWW中的图片赋予到默认物体的材质上进行渲染出来 } void Update() { Test.text = "DownLoad: " + www.progress; if(www.progress == 1 && Appear) { a++; Alpha = renderer.material.color; Alpha.a += 0.01F; renderer.material.color = Alpha; } if(Input.GetKey(KeyCode.Escape)) { Application.Quit(); } } void OnGUI() { if(GUI.Button(new Rect(Screen.width-120,Screen.height-40,120,30),"Click to XIAOWEI!")) { Application.OpenURL("https://cache..com/upload/information/20200217/48/4473.jpg的,后来就多出来了,这就达到预想的效果!