原文地址，多些大佬：unity切割图集并且读取图集
public class SpriteManager : MonoBehaviour { private static GameObject spriteManager; private static SpriteManager instance = null; public static SpriteManager getInstance() { if(instance == null) { instance = spriteManager.GetComponent<SpriteManager>(); } return instance; } private static Dictionary<string, UnityEngine.Object[]> mAtlasDic;//图集的集合 void Awake() { SpriteManager.spriteManager = gameObject; init(); } public void init() { mAtlasDic = new Dictionary<string, UnityEngine.Object[]>(); } public Sprite LoadAtlasSprite(string path, string _spriteName) { Sprite _sprite = FindSpriteFormBuffer(path, _spriteName); if(_sprite == null) { UnityEngine.Object[] _atlas = Resources.LoadAll(path); mAtlasDic.Add(path, _atlas); _sprite = SpriteFormAtlas(_atlas, _spriteName); } return _sprite; } public void DeleteAtlas(string path) { if (mAtlasDic.ContainsKey(path)) { mAtlasDic.Remove(path); } } private Sprite FindSpriteFormBuffer(string path, string _spriteName) { if (mAtlasDic.ContainsKey(path)) { UnityEngine.Object[] _atlas = mAtlasDic[path]; Sprite _sprite = SpriteFormAtlas(_atlas, _spriteName); return _sprite; } return null; } private Sprite SpriteFormAtlas(UnityEngine.Object[] _atlas, string _spriteName) { for (int i = 0; i < _atlas.Length; i++) { if (_atlas[i].GetType() == typeof(UnityEngine.Sprite)) { if (_atlas[i].name == _spriteName) { return (Sprite)_atlas[i]; } } } return null; } }
