unity三种资源加载方式Resources,AssetBundle,WebRequset的同步异步加载

using System;
using System.Collections;
using UnityEngine;
using UnityEngine.Networking;

public enum AssetLoadMode
{
    Resource,
    AssetBundle,
    WebRequest
}
public class AssetDownLoadComponent : GameComponent
{
    void Awake()
    {
        Initinalize();
    }
    public T ResourcesLoad<T>(string path) where T : UnityEngine.Object
    {
        return Resources.Load<T>(path);
    }
    public void ResourcesAsyncLoad<T>(string path, Action<ResourceRequest> action) where T : UnityEngine.Object
    {
        StartCoroutine(ResourcesAsync<T>(path,action));
    }

    public void UnityWebRequested(string url, Action<UnityWebRequest> callback)
    {
        StartCoroutine(UnityWebRequestLoad(url,callback));
    }
    public T AssetBundleLoad<T>(string path, RuntimePlatform  runtimePlatform) where T:UnityEngine.Object
    {
        AssetBundle asset= LoadAssetBundle(path, runtimePlatform);
        string name = path.Substring(path.LastIndexOf('/'));
        name = name.Substring(0,name.Length-3);
        return asset.LoadAsset<T>(name);
    }
    public void AssetBundleAsyncLoad(string path, Action<AssetBundleCreateRequest> callBack, RuntimePlatform runtimePlatform)
    {
        StartCoroutine(AssetBundleLoadAsync(path,callBack, runtimePlatform));
    }



    private IEnumerator ResourcesAsync<T>(string path, Action<ResourceRequest> action) where T : UnityEngine.Object
    {
        ResourceRequest resourcesRequest = Resources.LoadAsync<T>(path);
        yield return resourcesRequest;
        if (resourcesRequest.asset!=null)
        {
            action(resourcesRequest);
        }
        else
        {
            Debug.LogError(path+"无法加载");
        }
        
    }
    private IEnumerator UnityWebRequestLoad(string url, Action<UnityWebRequest> callback)
    {
        UnityWebRequest webRequest = UnityWebRequest.Get(url);
        yield return webRequest.SendWebRequest();
        if (webRequest.isNetworkError || webRequest.isHttpError)
        {
            Debug.Log(webRequest.error);
        }
        else
        {
            callback.Invoke(webRequest);
        }
    }

    private AssetBundle LoadAssetBundle(string path, RuntimePlatform runtimePlatform)
    {
        string root = System.IO.Path.Combine(Application.streamingAssetsPath, "AssetBundle/Win/");
        switch (runtimePlatform)
        {
            case RuntimePlatform.Android:
                root = System.IO.Path.Combine(Application.streamingAssetsPath, "AssetBundle/Android/");
                break;
            default:
                break;
        }
        Uri uri = new Uri(root+path);
        return AssetBundle.LoadFromFile(uri.AbsolutePath);
    }

    private IEnumerator AssetBundleLoadAsync(string path,Action<AssetBundleCreateRequest> callBack,RuntimePlatform runtimePlatform)
    {
        string root = System.IO.Path.Combine(Application.streamingAssetsPath, "AssetBundle/Win/");
        switch (runtimePlatform)
        {
            case RuntimePlatform.Android:
                root = System.IO.Path.Combine(Application.streamingAssetsPath, "AssetBundle/Android/");
                break;
            default:
                break;
        }
        Uri uri = new Uri(root + path);
        AssetBundleCreateRequest assetBundleCreateRequest = AssetBundle.LoadFromFileAsync(uri.AbsolutePath);
        yield return assetBundleCreateRequest;
        callBack(assetBundleCreateRequest);


    }

}