773 , 图片保留原始比例

Assets/Scripts/Download/DownloadManager.cs

@@ -326,6 +326,7 @@ public class DownloadManager : SingletonMono<DownloadManager>
             {
                 image.sprite = sprite;
             }
+            image.transform.localScale = new Vector3(1, (float)tex.height / (float)tex.width, 1);
         }));
     }