Unity笔记之本地加载图片_unity 读取本地图片

本文参考自：https://www.jianshu.com/p/78372e4f1143
在原有的基础上稍微做了一些改动，本文仅作为个人笔记。

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

public class LoadPictrueManager : MonoBehaviour
{
    public Material ma;
    public Image iss;
    int nums;

    string url_Begin = @"C:\Users\zhang\Desktop\";
    string url_End = @".jpg";
    int number = 100;

    string url1;
    private GameObject[] objs;
    private List<Material[]> materialss = new List<Material[]>();

    private Texture2D img = null;
    void Start()
    {
        objs = new GameObject[transform.childCount];
        for (int i = 0; i < objs.Length; i++)
        {
            objs[i] = transform.GetChild(i).gameObject;
        }

        for (int i = 0; i < objs.Length; i++)
        {
            materialss.Add(objs[i].GetComponent<MeshRenderer>().materials);
        }

        StartCoroutine(IOCeShi());
    }
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Q))
        {
            nums++;
            StartCoroutine(IOCeShi());
        }
    }
    /// <summary>
    /// www的方式
    /// </summary>
    /// <returns></returns>
    IEnumerator CeShi()
    {
        yield return new WaitForSeconds(0.5f);
        WWW www = new WWW(url1);
        yield return www;
        img = www.texture;
        Sprite sprite = Sprite.Create(img, new Rect(0, 0, img.width, img.height), new Vector2(0.5f, 0.5f));
        nums++;
        iss.sprite = sprite;//图片 用于UI
        ma.mainTexture = img;//材质球 用于plane等 ma是定义的一个材质球
    }
    /// <summary>
    /// 读取并赋予材质（IO流的方式）
    /// </summary>
    /// <returns></returns>
    IEnumerator IOCeShi()
    {
        yield return new WaitForSeconds(0.5f);
        for (int i = 0; i < objs.Length; i++, number++)
        {
            url1 = url_Begin + number.ToString() + url_End;
            print(url1);
            FileStream fileStream = new FileStream(url1, FileMode.Open, FileAccess.Read);
            byte[] by = new byte[fileStream.Length];
            fileStream.Read(by, 0, (int)fileStream.Length);
            fileStream.Close();//关闭流
            fileStream.Dispose();//释放流
            fileStream = null;
            img = new Texture2D(1080, 1920);
            img.LoadImage(by);
            objs[i].GetComponent<MeshRenderer>().material.mainTexture = img;
        }
        StopCoroutine(IOCeShi());
    }
}


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代码已附上，听说IO的方式要比www快一点也不知道是不是真的，各位自己去测试吧。如有不对的地方欢迎指正！