Issue with UnityWebRequest

Questions & Answers
1

Hi everyone!

I made a game in which I can upload images from external folders. To do this, I used the WWW class. Now, the process works, but a warning appears saying: “WWW class is obsolete: Use UnityWebRequest, a fully featured replacement which is more efficient and has additional features”.
So I tried to replace WWW with UnityWebRequest, but it doesn’t work, and I can’t figure it out.

This is the code I used:

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

public class FileManager : MonoBehaviour
{
    string path;
    public RawImage image;

    public void OpenExplorer()
    {
        path = EditorUtility.OpenFilePanel("Overwrite with png", "", "png");
        GetImage();
    }

    void GetImage()
    {
        if (path != null)
        {
            UpdateImage();
        }

        void UpdateImage()
        {
            WWW www = new WWW("file:///" + path);
            image.texture = www.texture;
        }
    }
}

Anyone can help me, please? Thank you so much!

2

At least you should get an idea of how UnityWebRequest can be used… code is untested, but comes from a working script.

const string WEB_HOST = "file:///";
UnityWebRequest www;
Texture2D texture = null;
bool isDone = false;
public IEnumerator GetImage()
{
    isDone = false;

    string url = WEB_HOST + "D:/image.png";
    www = UnityWebRequest.Get(url);
    yield return www.SendWebRequest();

    if (www.isNetworkError || www.isHttpError)
    {
        Debug.Log(www.error);
    }
    else
    {
        //retrieve result as binary
        byte[] bytes = www.downloadHandler.data;

        texture = new Texture2D(2, 2);
        texture.LoadImage(bytes, false);
    }
    isDone = true;
}

int state = 0;
void Update()
{
    if(state==0)
    {
        StartCoroutine(GetImage());
        //set in the above, but since StartCoroutine returns before it has a chance
        // to run we need to set it
        bIsDone = false;
        state++;
    }
    if(state==1)
    {
        if(bIsDone)
        {
            //texture is ready or has failed...
            //...
        }
    }
}