更新拉取图片的缓存代码

Assets/Scripts/Utils/Utils.cs

@@ -205,16 +205,44 @@ namespace Assets.Scripts
         /*删除父亲节点下的所有孩子*/
 
         /*显示网络图片*/
+        private static Dictionary<string, Texture> propTextureCache = new Dictionary<string, Texture>();
         public delegate Coroutine StartCoroutine(IEnumerator routine);
-        public static void DisplayImage(StartCoroutine startCoroutine,RawImage img, string url, Action<Texture> action=null) 
+        public static void DisplayImage(RawImage img, string url, bool cache = false)
         {
-            startCoroutine(DownloadImage(img, url,action));
+            //可以考虑缓存到硬盘里
+            //Texture2D tex = null;
+            //byte[] fileData;
+            //
+            //if (File.Exists(filePath))
+            //{
+            //    fileData = File.ReadAllBytes(filePath);
+            //    tex = new Texture2D(2, 2);
+            //    tex.LoadImage(fileData); //..this will auto-resize the texture dimensions.
+            //}
+            if (cache)
+            {
+                if (propTextureCache.ContainsKey(url))
+                {
+                    img.texture = propTextureCache[url];
+                    return;
+                }
+            }
+            UIManager.Instance.StartCoroutine(DownloadImage(img, url,(texture)=> {
+                if (cache)
+                {
+                    propTextureCache.Add(url, texture);
+                }
+            }));
+            
         }
 
         public static void DisplayImageAysnc(StartCoroutine startCoroutine, RawImage img, string url,Action<string> action)
         {
             startCoroutine(DownloadImageCallBack(img, url, action));
         }
+
+        
+
         static IEnumerator DownloadImage(RawImage img,string MediaUrl, Action<Texture> action = null)
         {
             UnityWebRequest request = UnityWebRequestTexture.GetTexture(MediaUrl);