Unity) URL 이미지 다운 및 관리 코드

URL 이미지 다운 및 관리 코드

URL을 기준으로 Texture를 읽고 저장하는 코드이다.

 

 

 

UnityWebRequestTexture를 사용해서 URL의 이미지를 Texture로 변환시킨다.

 

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<TextureLoaderformURL>

using System.Collections.Generic;
using UnityEngine;
using System.Threading.Tasks;
using UnityEngine.Networking;
using System.IO;

/// <summary>
/// URL에서 이미지를 읽고 저장 처리하는 코드
/// </summary>
public class TextureLoaderformURL
{

    private static Dictionary<string, Texture2D> _textureCahce = new Dictionary<string, Texture2D>();
    private static Dictionary<string, Texture2D> Textures
    {
        get {
            return _textureCahce;
        }
        set
        {
            _textureCahce = value;
        }
    }

    public static Task<Texture2D> GetTexture(string _url, bool _nonReadable = false, bool _fileSave =false)
    {

        var tcs = new TaskCompletionSource<Texture2D>();

        if (Textures.ContainsKey(_url) ==false)
        {

            if (string.IsNullOrEmpty(_url))
            {
                throw new System.Exception($"[GetTexture2DfromURL] URL is Null ");
            }

            Texture2D returnTexture2D = null;
            UnityWebRequest www = UnityWebRequestTexture.GetTexture(_url, _nonReadable);
            var asyncOperation = www.SendWebRequest();
            asyncOperation.completed += (operation) =>
            {
                if (operation.isDone == false)
                    throw new System.Exception($"[GetTexture2DfromURL] Exception :{_url}");
                if (www.result == UnityWebRequest.Result.ConnectionError)
                    throw new System.Exception($"[GetTexture2DfromURL] Network Error  :{_url}");


                returnTexture2D = ((DownloadHandlerTexture)www.downloadHandler).texture;
                if (returnTexture2D != null)
                    Textures.Add(_url, returnTexture2D);
                tcs.SetResult(Textures[_url]);

                FileSave($"{System.DateTime.Now.ToString("yyyyMMddHHmm")}.png", returnTexture2D);
            };
        }

        return tcs.Task;
    }

    private static void FileSave(string _name, Texture2D _texture  )
    {
        string fileRootPath = string.Empty;
        string filePath = string.Empty;
#if UNITY_EDITOR
        fileRootPath = Application.streamingAssetsPath;
#elif UNITY_IOS
        fileRootPath = Application.persistentDataPath;
#elif UNITY_ANDROID
        fileRootPath = Application.persistentDataPath;
#endif
        //Root Folder Create
        if (!Directory.Exists(fileRootPath))
        {
            Directory.CreateDirectory(fileRootPath);
        }

        filePath = Path.Combine(fileRootPath, _name);
        if (File.Exists(filePath))
        {
            Debug.LogError($"[SmartTexture] File Exist Error :  {_name}");
            return;
        }

        File.WriteAllBytes(filePath, _texture.EncodeToPNG());
#if UNITY_EDITOR
        UnityEditor.AssetDatabase.Refresh();
#endif

    }


}

<사용방법>

SetTexture( await TextureLoaderformURL.GetTexture(
            "https://firebasestorage.googleapis.com/v0/b/fir-test-58196.appspot.com/o/temp.png?alt=media&token=fbaadf6e-f462-4730-8ff3-311146007341", false,true));

 

UnityWebRequestTexture .GetTexture  :  [링크]

Unity - Scripting API: Networking.UnityWebRequestTexture.GetTexture

 

 

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