UGUI研究院之全面理解图集与使用（三）

	[MenuItem ("MyMenu/AtlasMaker")]
	static private void MakeAtlas()
	{
		string spriteDir = Application.dataPath +"/Resources/Sprite";
		
		if(!Directory.Exists(spriteDir)){
			Directory.CreateDirectory(spriteDir);
		}

		DirectoryInfo rootDirInfo = new DirectoryInfo (Application.dataPath +"/Atlas");
		foreach (DirectoryInfo dirInfo in rootDirInfo.GetDirectories()) {
			foreach (FileInfo pngFile in dirInfo.GetFiles("*.png",SearchOption.AllDirectories)) {
				string allPath = pngFile.FullName;
				string assetPath = allPath.Substring(allPath.IndexOf("Assets"));
				Sprite sprite = Resources.LoadAssetAtPath<Sprite>(assetPath);
				GameObject go = new GameObject(sprite.name);
				go.AddComponent<SpriteRenderer>().sprite = sprite;
				 allPath = spriteDir+"/"+sprite.name+".prefab";
				string prefabPath = allPath.Substring(allPath.IndexOf("Assets"));
				PrefabUtility.CreatePrefab(prefabPath,go);
				GameObject.DestroyImmediate(go);
			}
		}	
	}

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class UIMain : MonoBehaviour {

	void Start () 
	{
		CreatImage(loadSprite("image0"));
		CreatImage(loadSprite("image1"));
	}

	private void CreatImage(Sprite sprite ){
		GameObject go = new GameObject(sprite.name);
		go.layer = LayerMask.NameToLayer("UI");
		go.transform.parent = transform;
		go.transform.localScale= Vector3.one;
		Image image = go.AddComponent<Image>();
		image.sprite = sprite;
		image.SetNativeSize();
	}

	private Sprite loadSprite(string spriteName){
		return Resources.Load<GameObject>("Sprite/" + spriteName).GetComponent<SpriteRenderer>().sprite;
	}

}

	[MenuItem ("MyMenu/Build Assetbundle")]
	static private void BuildAssetBundle()
	{
		string dir = Application.dataPath +"/StreamingAssets";

		if(!Directory.Exists(dir)){
			Directory.CreateDirectory(dir);
		}
		DirectoryInfo rootDirInfo = new DirectoryInfo (Application.dataPath +"/Atlas");
		foreach (DirectoryInfo dirInfo in rootDirInfo.GetDirectories()) {
			List<Sprite> assets = new List<Sprite>();
			string path = dir +"/"+dirInfo.Name+".assetbundle";
			foreach (FileInfo pngFile in dirInfo.GetFiles("*.png",SearchOption.AllDirectories)) 
			{
				string allPath = pngFile.FullName;
				string assetPath = allPath.Substring(allPath.IndexOf("Assets"));
				assets.Add(Resources.LoadAssetAtPath<Sprite>(assetPath));
			}
			if(BuildPipeline.BuildAssetBundle(null, assets.ToArray(), path,BuildAssetBundleOptions.UncompressedAssetBundle| BuildAssetBundleOptions.CollectDependencies, GetBuildTarget())){
			}
		}	
	}
		static private BuildTarget GetBuildTarget()
		{
			BuildTarget target = BuildTarget.WebPlayer;
#if UNITY_STANDALONE
			target = BuildTarget.StandaloneWindows;
#elif UNITY_IPHONE
			target = BuildTarget.iPhone;
#elif UNITY_ANDROID
			target = BuildTarget.Android;
#endif
			return target;
		}

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class UIMain : MonoBehaviour {

	AssetBundle assetbundle = null;
	void Start () 
	{
		CreatImage(loadSprite("image0"));
		CreatImage(loadSprite("image1"));
	}

	private void CreatImage(Sprite sprite ){
		GameObject go = new GameObject(sprite.name);
		go.layer = LayerMask.NameToLayer("UI");
		go.transform.parent = transform;
		go.transform.localScale= Vector3.one;
		Image image = go.AddComponent<Image>();
		image.sprite = sprite;
		image.SetNativeSize();
	}

	private Sprite loadSprite(string spriteName){
#if USE_ASSETBUNDLE
		if(assetbundle == null)
			assetbundle = AssetBundle.CreateFromFile(Application.streamingAssetsPath +"/Main.assetbundle");
				return assetbundle.Load(spriteName) as Sprite;
#else
		return Resources.Load<GameObject>("Sprite/" + spriteName).GetComponent<SpriteRenderer>().sprite;
#endif	
	}

}