private IEnumerator LoadBytesCo(string fileUri, LoadBytesCallback loadBytesCallback)
{
WWW www = new WWW(fileUri);
yield return(www);
byte[] bytes = www.bytes;
string errorMessage = www.error;
www.Dispose();
loadBytesCallback?.Invoke(fileUri, bytes, errorMessage);
}
//内部协程从文件路径中读取数据流
private IEnumerator LoadBytesCo(string fileUri, LoadBytesCallback loadBytesCallback)
{
byte[] bytes = null;
string errorMessage = null;
#if UNITY_5_4_OR_NEWER
UnityWebRequest unityWebRequest = UnityWebRequest.Get(fileUri);
#if UNITY_2017_2_OR_NEWER
yield return(unityWebRequest.SendWebRequest());
#else
yield return(unityWebRequest.Send());
#endif
bool isError = false;
#if UNITY_2017_1_OR_NEWER
isError = unityWebRequest.isNetworkError;
#else
isError = unityWebRequest.isError;
#endif
bytes = unityWebRequest.downloadHandler.data;
errorMessage = isError ? unityWebRequest.error : null;
unityWebRequest.Dispose();
#else
WWW www = new WWW(fileUri);
yield return(www);
bytes = www.bytes;
errorMessage = www.error;
www.Dispose();
#endif
if (loadBytesCallback != null)
{
loadBytesCallback.Invoke(fileUri, bytes, errorMessage);
}
}