目标
从 URL 获取统一工作的 gif，我目前正在使用 WWW 类。我目前正在获取一个字节 [] 并将其转换为 System.Drawing.Image。这在编辑器中有效，但不适用于任何构建
错误：
第 111 行的程序集“System.Drawing.Image”中的“类型加载异常：无法加载类型”System.IO.InternalBufferOverflowException
为什么？
它与 System.Drawing.Image.FromStream 内置方法有关，Unity 出于某种原因不喜欢它。其他选项是 .FromFile 和 .FromHBitMap，我不知道如何使用 HBitMap 但回到我原来的计划，.FromFile 对我来说是不可用的。
整个代码
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using UnityEngine;
using System.IO;
using UnityEngine.UI;
using System.Collections;
public class AnimatedGifDrawerBack : MonoBehaviour
{
public string loadingGifPath;
public float speed = 1;
public Vector2 drawPosition;
public string pName;
public float width;
public float height;
public float percentage;
public GameObject positionPlaceHolderGO;
public Vector2 positionPlaceHolder;
public Text debugText;
private SpriteImageArray sia;
private string url;
private WWW www;
public bool finishedWWW = false;
public bool hasWWW = false;
public bool canOnGUI = false;
List<Texture2D> gifFrames = new List<Texture2D>();
void Start()
{
percentage = 1.3f;
positionPlaceHolderGO = GameObject.FindGameObjectWithTag("PBLPlace");
positionPlaceHolder = positionPlaceHolderGO.transform.position;
}
void Update()
{
while (hasWWW == false)
{
Debug.Log("in while loop");
if (this.GetComponent<PokemonCreatorBack>().name == "")
{
}
else
{
debugText.text = "Name Found";
url = "www.pkparaiso.com/imagenes/xy/sprites/animados-espalda/" + this.GetComponent<PokemonCreatorBack>().PokemonName.ToLower() + ".gif";
StartCoroutine(WaitForRequest(positionPlaceHolderGO, url));
hasWWW = true;
debugText.text = "hawWWW = true";
}
}
}
void OnGUI()
{
height = (float)Screen.height - 80f / percentage;
//GUI.DrawTexture (new Rect (Screen.width-width, Screen.height - height, gifFrames [0].width * percentage, gifFrames [0].height * percentage), gifFrames [(int)(Time.frameCount * speed) % gifFrames.Count]);
if (canOnGUI)
GUI.DrawTexture(new Rect(positionPlaceHolder.x, positionPlaceHolder.y, gifFrames[0].width * percentage, gifFrames[0].height * percentage), gifFrames[(int)(Time.frameCount * speed) % gifFrames.Count]);
}
IEnumerator WaitForRequest(GameObject go, string url)
{
www = new WWW(url);
yield return www;
if (www.error == null)
{
Debug.Log("WWW Ok!: " + www.texture.name);
}
else
{
Debug.Log("WWW Error: " + www.error);
}
debugText.text = "finishedWWW = true";
finishedWWW = true;
}
public System.Drawing.Image ByteArrayToImage(byte[] byteArrayIn)
{
if (finishedWWW == false)
{
Debug.Log("Called too early");
}
if (byteArrayIn == null)
{
Debug.Log("Null byte array");
return null;
}
Debug.Log("Bytra array in length: " + byteArrayIn.GetLongLength(0));
MemoryStream ms = new MemoryStream(byteArrayIn);
System.Drawing.Image returnImage = System.Drawing.Image.FromStream(ms); //MAIN SOURCE OF ERROR HERE
finishedWWW = true;
debugText.text = "System.Image Created";
return returnImage;
}
public void loadImage()
{
Debug.Log("Called Load Image BACK");
debugText.text = "Called Load Image BACK";
System.Drawing.Image gifImage = ByteArrayToImage(www.bytes);
FrameDimension dimension = new FrameDimension(gifImage.FrameDimensionsList[0]);
int frameCount = gifImage.GetFrameCount(dimension);
for (int i = 0; i < frameCount; i++)
{
gifImage.SelectActiveFrame(dimension, i);
Bitmap frame = new Bitmap(gifImage.Width, gifImage.Height);
System.Drawing.Graphics.FromImage(frame).DrawImage(gifImage, Point.Empty);
Texture2D frameTexture = new Texture2D(frame.Width, frame.Height);
for (int x = 0; x < frame.Width; x++)
for (int y = 0; y < frame.Height; y++)
{
System.Drawing.Color sourceColor = frame.GetPixel(x, y);
frameTexture.SetPixel(frame.Width - 1 + x, -y, new Color32(sourceColor.R, sourceColor.G, sourceColor.B, sourceColor.A)); // for some reason, x is flipped
}
frameTexture.Apply();
gifFrames.Add(frameTexture);
}
Debug.Log("Starting ON GUI!");
debugText.text = "Starting OnGUI";
canOnGUI = true;
}
}
想法
- byteArrayIn.GetLongLength(0) 最多返回 80,000。
- 最后通过的调试语句称为 Image Loading BACK。
- 如有必要，我将编写自己的火焰流光，如果有必要，有人可以指出我的写作方向。
- 我认为主要的解决方法是处理 Image.FromStream()。
- 场景中有两个。
欢迎所有想法或解决方案，我真的只是希望我知道如何解决这个错误，以便我可以与 Unity 社区更多地分享它。