两个列表进骑行释放内存

Assets/Scripts/Utils/Utils.cs

@@ -309,7 +309,7 @@ namespace Assets.Scripts
         /*显示网络图片*/
         public static Dictionary<string, Texture> propTextureCache = new Dictionary<string, Texture>();
         public delegate Coroutine StartCoroutine(IEnumerator routine);
-        public static void DisplayImage(RawImage img, string url, bool cache = false)
+        public static void DisplayImage(RawImage img, string url, bool cache = false,Dictionary<string,Texture> caches = null)
         {
             if (string.IsNullOrEmpty(url))
                 return;
@@ -332,12 +332,38 @@ namespace Assets.Scripts
                 }
             }
             UIManager.Instance.StartCoroutine(DownloadImage(img, url,(texture)=> {
-                if (cache && !propTextureCache.ContainsKey(url))
-                {
-                    propTextureCache.Add(url, texture);
-                }
+                //if (cache && !propTextureCache.ContainsKey(url))
+                //{
+                //    propTextureCache.Add(url, texture);
+                //}
             }));
             
+        }
+        /// <summary>
+        /// 使用临时字典存放图片，切换页面后清除
+        /// </summary>
+        /// <param name="img"></param>
+        /// <param name="url"></param>
+        /// <param name="caches"></param>
+        public static void DisplayImageTempDict(RawImage img, string url, Dictionary<string, Texture> caches = null)
+        {
+            if (string.IsNullOrEmpty(url))
+                return;
+            if (caches!=null)
+            {
+                if (caches.ContainsKey(url))
+                {
+                    img.texture = caches[url];
+                    return;
+                }
+            }
+            UIManager.Instance.StartCoroutine(DownloadImage(img, url, (texture) => {
+                if (caches != null && !caches.ContainsKey(url))
+                {
+                    caches.Add(url, texture);
+                }
+            }));
+
         }
 
         public static void DisplayImageAysnc(StartCoroutine startCoroutine, RawImage img, string url,Action<string> action)
@@ -349,13 +375,15 @@ namespace Assets.Scripts
 
         static IEnumerator DownloadImage(RawImage img,string MediaUrl, Action<Texture> action = null)
         {
-            UnityWebRequest request = UnityWebRequestTexture.GetTexture(MediaUrl);
+            UnityWebRequest request = UnityWebRequestTexture.GetTexture(MediaUrl,true);
             yield return request.SendWebRequest();
             if (request.isNetworkError || request.isHttpError)
                 Debug.Log(request.error);
             else if(img!=null)
             {
-                img.texture = ((DownloadHandlerTexture)request.downloadHandler).texture;
+                var _t = ((DownloadHandlerTexture)request.downloadHandler).texture;
+                _t.name = MediaUrl;
+                img.texture = _t;
                 if (action != null) 
                 {
                     action.Invoke(img.texture);
@@ -365,7 +393,7 @@ namespace Assets.Scripts
 
         static IEnumerator DownloadImageCallBack(RawImage img, string MediaUrl,Action<string> action)
         {
-            UnityWebRequest request = UnityWebRequestTexture.GetTexture(MediaUrl);
+            UnityWebRequest request = UnityWebRequestTexture.GetTexture(MediaUrl, true);
             yield return request.SendWebRequest();
             if (request.isNetworkError || request.isHttpError)
                 Debug.Log(request.error);