UGUI获取图集工具类

因为NGUI内部已经封装了方法，获取图集比较容易，但是UGUI需要自己来封装，所以动态设置图集的时候就比较麻烦，所以简单写了一个方法，这里记录一下以后直接拿来用就可以了：

 // 记录图集
private static Dictionary<string, Sprite[]> recordAtlasDic = new Dictionary<string, Sprite[]>();
 // 记录sprite 
private static Dictionary<string, Sprite> spriteDic = new Dictionary<string, Sprite>();

 public static Sprite LoadSprites(string atlasName, string spriteName)
 {
     Sprite spriteOntology = null;
     spriteDic.TryGetValue(spriteName, out spriteOntology);
     
     if (spriteOntology == null)
     {
         Sprite[] atlasArry = null;
         recordAtlasDic.TryGetValue(atlasName, out atlasArry);
         if (atlasArry != null)
         {
             atlasArry = recordAtlasDic[atlasName];
         }
         else
         {
             try
             {
                 atlasArry = Resources.LoadAll(atlasName);
                 recordAtlasDic.Add(atlasName, atlasArry);
             }
             catch
             {
                 throw new Exception(string.Format("Resources.Load{0}fail!", atlasName));
             }
         }

         try
         {
             for (int i = 0; i < atlasArry.Length; i++)
             {
                 string key = atlasArry[i].name;
                 spriteDic.Add(key, atlasArry[i]);
             }
             spriteOntology = spriteDic[spriteName];
         }
         catch
         {
             throw new Exception(string.Format("No atlas was found:{0}", atlasName));
         }
     }
     return spriteOntology;
 }

 // 记录图集
private static Dictionary<string, Sprite[]> recordAtlasDic = new Dictionary<string, Sprite[]>();
 // 记录sprite 
private static Dictionary<string, Sprite> spriteDic = new Dictionary<string, Sprite>();

 public static Sprite LoadSprites(string atlasName, string spriteName)
 {
     Sprite spriteOntology = null;
     spriteDic.TryGetValue(spriteName, out spriteOntology);
     
     if (spriteOntology == null)
     {
         Sprite[] atlasArry = null;
         recordAtlasDic.TryGetValue(atlasName, out atlasArry);
         if (atlasArry != null)
         {
             atlasArry = recordAtlasDic[atlasName];
         }
         else
         {
             try
             {
                 atlasArry = Resources.LoadAll(atlasName);
                 recordAtlasDic.Add(atlasName, atlasArry);
             }
             catch
             {
                 throw new Exception(string.Format("Resources.Load{0}fail!", atlasName));
             }
         }

         try
         {
             for (int i = 0; i < atlasArry.Length; i++)
             {
                 string key = atlasArry[i].name;
                 spriteDic.Add(key, atlasArry[i]);
             }
             spriteOntology = spriteDic[spriteName];
         }
         catch
         {
             throw new Exception(string.Format("No atlas was found:{0}", atlasName));
         }
     }
     return spriteOntology;
 }

 // 记录图集
private static Dictionary<string, Sprite[]> recordAtlasDic = new Dictionary<string, Sprite[]>();
 // 记录sprite 
private static Dictionary<string, Sprite> spriteDic = new Dictionary<string, Sprite>();

 public static Sprite LoadSprites(string atlasName, string spriteName)
 {
     Sprite spriteOntology = null;
     spriteDic.TryGetValue(spriteName, out spriteOntology);
     
     if (spriteOntology == null)
     {
         Sprite[] atlasArry = null;
         recordAtlasDic.TryGetValue(atlasName, out atlasArry);
         if (atlasArry != null)
         {
             atlasArry = recordAtlasDic[atlasName];
         }
         else
         {
             try
             {
                 atlasArry = Resources.LoadAll(atlasName);
                 recordAtlasDic.Add(atlasName, atlasArry);
             }
             catch
             {
                 throw new Exception(string.Format("Resources.Load{0}fail!", atlasName));
             }
         }

         try
         {
             for (int i = 0; i < atlasArry.Length; i++)
             {
                 string key = atlasArry[i].name;
                 spriteDic.Add(key, atlasArry[i]);
             }
             spriteOntology = spriteDic[spriteName];
         }
         catch
         {
             throw new Exception(string.Format("No atlas was found:{0}", atlasName));
         }
     }
     return spriteOntology;
 }