assetBundle返回null

Question

我正在使用UnityWebRequest从服务器下载assetBundle，它在unity编辑器中运行良好，但在andriod中它给出了空值，有人能帮助我吗

public IEnumerator DownloadAsset(string url, string assetName)
{
    using (UnityWebRequest www = UnityWebRequestAssetBundle.GetAssetBundle(url))
    {
        yield return www.SendWebRequest();
        AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(www);
        if (bundle != null)
        {
            AGUIMisc.ShowToast("Not Null");
            GameObject temp = bundle.LoadAsset(assetName) as GameObject;
            var newobjj = Instantiate(temp);
            newobjj.transform.parent = maleparent.transform;
        }
        else
        {
            AGUIMisc.ShowToast("Null");
        }
    }
}

Answer 1

目标平台Android：

AssetBundles需要构建在目标平台中，稍后将在目标平台上使用它们。由于您希望在安卓中使用AssetBundles，因此在构建AssetBundles时，目标平台也应该是Android。

请同时检查：

您应该在调用UnityWebRequest.SendWebRequest()之前先设置UnityWebRequest.downloadHandler以使用DownloadHandlerAssetBundle。

    public System.Collections.IEnumerator DownloadAsset(string url, string assetName)
    {
        using (var uwr = new UnityEngine.Networking.UnityWebRequest(url, UnityEngine.Networking.UnityWebRequest.kHttpVerbGET))
        {
            uwr.downloadHandler = new UnityEngine.Networking.DownloadHandlerAssetBundle(url, 0);
            yield return uwr.SendWebRequest();
            AssetBundle bundle = UnityEngine.Networking.DownloadHandlerAssetBundle.GetContent(uwr);
            if (bundle != null)
            {
                AGUIMisc.ShowToast("Not Null");
                GameObject temp = bundle.LoadAsset<GameObject>(assetName);
                var newobj = GameObject.Instantiate(temp);
                newobj.transform.parent = maleparent.transform;
            }
            else
            {
                AGUIMisc.ShowToast("Null");
            }
        }
    }