使用WebClient在Unity3d中下载大文件
我正在寻找有关使用WebClient在Unity3d中下载大（100mg +）文件的任何想法。 WWW以异步方式运行并且完美无缺，除非它返回内存错误并导致应用程序崩溃，因此我已按照此处所述移至解决方案：
如何从url下载文件并使用C sharp中的unity3d保存在位置？
这就像一个梦想， 除了它关闭我的应用程序中的所有脚本，直到下载完成。 我似乎甚至无法在下载进行的同时运行加载栏。 我试过通过添加一个协程来处理下载，但到目前为止，没有运气。
任何帮助，将不胜感激。 我的代码目前（经过多次迭代后）看起来像：
C＃
void Update() { //Sets up the timer so I can use it to watch the debugging timer += Time.deltaTime; Debug.Log (timer); //Checks to see if the file was already downloaded and saved. If not, it begins downloading. if (FileExists == 0 && timer >= 5) { StartCoroutine ("DOWNLOAD"); } //If the file already exists, it jumps straight to the next scene. else if (FileExists == 1) { Application.LoadLevelAsync ("Different_Level"); } //These are the buttons. One should stop the download if the player decides they don't want to wait. if (Input.GetMouseButtonUp (0)) { RaycastHit rc_hit; Ray hud_ray = Camera.main.ScreenPointToRay (Input.mousePosition); if (Physics.Raycast (hud_ray, out rc_hit, Mathf.Infinity, 1 << LayerMask.NameToLayer ("HUD"))) { if (rc_hit.transform.gameObject == b_BackButton) { StopCoroutine ("EN_Loop"); Application.LoadLevelAsync ("Other_Level"); } } } } //This is what should happen when the video is done downloading void AllDone () { Debug.Log ("Download Complete"); Application.LoadLevelAsync ("Next_Level"); } ////This is the coroutine I created int he hopes that I could get the download to run in the background. IEnumerator DOWNLOAD() { Debug.Log("downloading_EN"); WebClient client = new WebClient(); client.DownloadFile ("http://ServerInfo.net/moviefile.mp4", Application.persistentDataPath + "/" + "moviefile.mp4"); yield return null; AllDone (); } 尝试使用WebClient.DownloadFileAsync来锁定主线程（这样您的其他脚本仍将运行）并使用WebClient.DownloadFileCompleted事件来了解它何时完成。
无需使用Coroutine来使用WebClient，并确保只调用此方法一次：
void DownloadFile() { WebClient client = new WebClient(); client.DownloadFileCompleted += new System.ComponentModel.AsyncCompletedEventHandler( DownloadFileCompleted ); client.DownloadFileAsync ((new Uri ("http://ServerInfo.net/moviefile.mp4", Application.persistentDataPath + "/" + "moviefile.mp4")); } void DownloadFileCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e) { if (e.Error == null) { AllDone (); } }
有关DownloadFileAsync的更多信息：
https://msdn.microsoft.com/en-us/library/system.net.webclient.downloadfileasync%28v=vs.110%29.aspx
和DownloadFileCompleted事件：