{"id":210,"date":"2021-08-19T23:53:03","date_gmt":"2021-08-19T15:53:03","guid":{"rendered":"https:\/\/www.blinkedu.cn\/?p=210"},"modified":"2022-03-08T15:37:04","modified_gmt":"2022-03-08T07:37:04","slug":"unity%e5%ae%9e%e7%8e%b0%e6%96%ad%e7%82%b9%e7%bb%ad%e4%bc%a0%e4%b8%8b%e8%bd%bd%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.blinkedu.cn\/index.php\/2021\/08\/19\/unity%e5%ae%9e%e7%8e%b0%e6%96%ad%e7%82%b9%e7%bb%ad%e4%bc%a0%e4%b8%8b%e8%bd%bd%e5%8a%9f%e8%83%bd\/","title":{"rendered":"Unity\u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20\u4e0b\u8f7d\u529f\u80fd"},"content":{"rendered":"<h2>\u4ec0\u4e48\u662f\u65ad\u70b9\u7eed\u4f20<\/h2>\n<p>\u5c31\u662f\u4e0b\u8f7d\u6587\u4ef6\u65f6\uff0c\u4e0d\u5fc5\u91cd\u5934\u5f00\u59cb\u4e0b\u8f7d\uff0c\u800c\u662f\u4ece\u6307\u5b9a\u7684\u4f4d\u7f6e\u7ee7\u7eed\u4e0b\u8f7d\uff0c\u8fd9\u6837\u7684\u529f\u80fd\u5c31\u53eb\u505a\u65ad\u70b9\u7eed\u4f20<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u9700\u8981\u65ad\u70b9\u7eed\u4f20<\/h2>\n<p>\u5728\u4e0b\u8f7d\u6587\u4ef6\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6253\u65ad\u6587\u4ef6\u4e0b\u8f7d\u7684\u539f\u56e0\u6709\u5f88\u591a\uff0c\u6bd4\u5982\u7f51\u7edc\u4e0d\u7a33\u5b9a\uff0c\u5bfc\u81f4\u4e0b\u8f7d\u4e2d\u65ad\uff0c\u5982\u679c\u6ca1\u6709\u65ad\u70b9\u7eed\u4f20\u529f\u80fd\u7684\u8bdd\uff0c\u4e2d\u65ad\u4e4b\u540e\u9700\u8981\u91cd\u65b0\u5f00\u59cb\u4e0b\u8f7d\u3002\u4f8b\u5982\u4e00\u4e2a\u6587\u4ef6\u6709100M\u5927\u5c0f\uff0c\u6211\u4e0b\u8f7d\u4e8699M\uff0c\u9a6c\u4e0a\u5c31\u8981\u4e0b\u8f7d\u5b8c\u6210\u4e86\uff0c\u8fd9\u662f\u7a81\u7136\u7f51\u7edc\u4e2d\u65ad\u5bfc\u81f4\u4e0b\u8f7d\u5931\u8d25\u4e86\uff0c\u6211\u91cd\u65b0\u5f00\u59cb\u4e0b\u8f7d\u7684\u65f6\u5019\u53d1\u73b0\u53c8\u9700\u8981\u91cd\u65b0\u5f00\u59cb\u4e0b\u8f7d\uff0c\u8fd9\u65f6\u5019\u662f\u4e0d\u662f\u4f1a\u611f\u89c9\u5fc3\u6001\u5d29\u4e86\u5440\uff0c\u65e2\u6d6a\u8d39\u65f6\u95f4\u4e5f\u6d6a\u8d39\u91d1\u94b1(\u6bd5\u7adf\u6d41\u91cf\u4e5f\u662f\u8981\u94b1\u7684)\u3002\u5982\u679c\u6709\u4e86\u65ad\u70b9\u7eed\u4f20\u529f\u80fd\u7684\u8bdd\uff0c\u6211\u4e0b\u8f7d\u4e8699M\uff0c\u5373\u4f7f\u7f51\u7edc\u4e2d\u65ad\uff0c\u91cd\u8fde\u4e4b\u540e\u6211\u7684\u4e0b\u8f7d\u4f9d\u65e7\u662f\u4ece99M\u7684\u4f4d\u7f6e\u5f00\u59cb\u4e0b\u8f7d\uff0c\u8fd9\u6837\u7ed9\u7528\u6237\u7684\u4f53\u9a8c\u5c31\u5f88\u68d2\u4e86<\/p>\n<h2>\u5982\u4f55\u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20<\/h2>\n<figure id=\"attachment_mmd_211\" class=\"wp-block-image \"><img width=\"924\" height=\"1003\" src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2021\/08\/1627797995955.png\" class=\"attachment-full size-full\" alt=\"\u300aUnity\u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20\u4e0b\u8f7d\u529f\u80fd\u300b\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2021\/08\/1627797995955.png 924w, https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2021\/08\/1627797995955-276x300.png 276w, https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2021\/08\/1627797995955-768x834.png 768w, https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2021\/08\/1627797995955-750x814.png 750w\" sizes=\"(max-width: 924px) 100vw, 924px\" \/><\/figure>\n<ol>\n<li>\u5728\u4e0b\u8f7d\u6587\u4ef6\u7684\u65f6\u5019\u6211\u4eec\u4f1a\u5148\u521b\u5efa\u4e00\u4e2a\u4e0e\u4e0b\u8f7d\u6587\u4ef6\u5bf9\u5e94\u7684\u4ee5.temp\u4e3a\u540e\u7f00\u7684\u4e34\u65f6\u6587\u4ef6\uff0c \u4e0b\u8f7d\u7684\u6587\u4ef6\u6570\u636e\u4f1a\u5199\u5165\u8fd9\u4e2a\u4e34\u65f6\u6587\u4ef6\u4e2d<\/li>\n<li>\u6bcf\u6b21\u5f00\u59cb\u4e0b\u8f7d\u7684\u65f6\u5019\u4f1a\u68c0\u67e5\u662f\u5426\u5b58\u5728\u9700\u4e0b\u8f7d\u6587\u4ef6\u7684\u4e34\u65f6\u6587\u4ef6\uff0c\u5982\u679c\u5b58\u5728\uff0c\u4fbf\u4ece\u8be5\u6587\u4ef6\u6570\u636e\u957f\u5ea6\u7684\u5730\u65b9\u5f00\u59cb\u4e0b\u8f7d\u5199\u5165<\/li>\n<li>\u4e0b\u8f7d\u5b8c\u6210\u540e\u4fbf\u5c06\u4e34\u65f6\u6587\u4ef6\u79fb\u52a8\u5230\u76ee\u6807\u4e0b\u8f7d\u76ee\u5f55<\/li>\n<\/ol>\n<h2>Unity\u4e2d\u7684\u4ee3\u7801\u5b9e\u73b0<\/h2>\n<h3>\uff08\u4e00\uff09\u5b9a\u4e49\u4e00\u4e2a\u9519\u8bef\u7801\u679a\u4e3e\uff0c\u7528\u6765\u6807\u8bc6\u4e0b\u8f7d\u51fa\u9519\u7684\u60c5\u51b5<\/h3>\n<pre><code class=\"language-csharp line-numbers\">public enum ErrorCode\n{\n    DownloadContentEmpty,    \/\/ \u9700\u8981\u4e0b\u8f7d\u7684\u6587\u4ef6\u5185\u5bb9\u4e3a\u7a7a\n    TempFileMissing,            \/\/ \u4e34\u65f6\u6587\u4ef6\u4e22\u5931\n}\n<\/code><\/pre>\n<h3>\uff08\u4e8c\uff09  \u5b9a\u4e49\u59d4\u6258\uff0c\u7528\u6765\u5916\u90e8\u6ce8\u518c\u76f8\u5173\u72b6\u6001\u7684\u5904\u7406<\/h3>\n<pre><code class=\"language-csharp line-numbers\">\/\/\/ &lt;summary&gt;\n\/\/\/ \u4e0b\u8f7d\u51fa\u9519\n\/\/\/ &lt;\/summary&gt;\n\/\/\/ &lt;param name=&quot;errorCode&quot;&gt;\u9519\u8bef\u7801\n\/\/\/ &lt;param name=&quot;message&quot;&gt;\u9519\u8bef\u4fe1\u606f\npublic delegate void ErrorEventHandler(ErrorCode errorCode, string message);\n\/\/\/ \n&lt;summary&gt;\n\/\/\/ \u4e0b\u8f7d\u5b8c\u6210\n\/\/\/ &lt;\/summary&gt;\n\/\/\/ &lt;param name=&quot;message&quot;&gt;\u5b8c\u6210\u4fe1\u606f\npublic delegate void CompletedEventHandler(string message);\n\/\/\/ \n&lt;summary&gt;\n\/\/\/ \u4e0b\u8f7d\u8fdb\u5ea6\n\/\/\/ &lt;\/summary&gt;\n\/\/\/ &lt;param name=&quot;prg&quot;&gt;\u5f53\u524d\u8fdb\u5ea6\n\/\/\/ &lt;param name=&quot;currLength&quot;&gt;\u5f53\u524d\u4e0b\u8f7d\u5b8c\u6210\u7684\u957f\u5ea6\n\/\/\/ &lt;param name=&quot;totalLength&quot;&gt;\u6587\u4ef6\u603b\u957f\u5ea6\npublic delegate void ProgressEventHandler(float prg, long currLength, long totalLength);\n<\/code><\/pre>\n<h3>\uff08\u4e09\uff09\u5b9e\u73b0\u4e0b\u8f7d\u5904\u7406\u811a\u672c\uff08DownloadHandler\uff09<\/h3>\n<p>\u8fd9\u4e2a\u811a\u672c\u662f\u9700\u8981\u7ee7\u627f DownloadHandlerScript<\/p>\n<pre><code class=\"language-csharp line-numbers\">public class DownloadHandler : DownloadHandlerScript\n{\n    private string savePath = null; \/\/ \u4fdd\u5b58\u5230\u7684\u8def\u5f84\n    private string tempPath = null; \/\/ \u4e0b\u8f7d\u4e34\u65f6\u6587\u4ef6\u8def\u5f84\n    private long currLength = 0; \/\/ \u5f53\u524d\u5df2\u7ecf\u4e0b\u8f7d\u7684\u6570\u636e\u957f\u5ea6\n    private long totalLength = 0; \/\/ \u6587\u4ef6\u603b\u6570\u636e\u957f\u5ea6\n    private long contentLength = 0; \/\/ \u672c\u6b21\u9700\u8981\u4e0b\u8f7d\u7684\u6570\u636e\u957f\u5ea6\n    private FileStream fileStream = null; \/\/ \u6587\u4ef6\u6d41\uff0c\u7528\u6765\u5c06\u63a5\u6536\u5230\u7684\u6570\u636e\u5199\u5165\u6587\u4ef6\n    private ErrorEventHandler onError = null; \/\/ \u51fa\u9519\u56de\u8c03\n    private CompletedEventHandler onCompleted = null; \/\/ \u5b8c\u6210\u56de\u8c03\n    private ProgressEventHandler onProgress = null; \/\/ \u8fdb\u5ea6\u56de\u8c03\n\n    public DownloadHandler(string savePath, CompletedEventHandler onCompleted, ProgressEventHandler onProgress,\n        ErrorEventHandler onError)\n    {\n        this.savePath = savePath.Replace(&quot;\\\\&quot;, &quot;\/&quot;);\n        this.onCompleted = onCompleted;\n        this.onProgress = onProgress;\n        this.onError = onError;\n        this.tempPath = savePath + &quot;.temp&quot;;\n        fileStream = new FileStream(tempPath, FileMode.OpenOrCreate, FileAccess.ReadWrite);\n        currLength = fileStream.Length;\n        fileStream.Position = currLength;\n    }\n\n    public long CurrLength\n    {\n        get { return currLength; }\n    }\n\n    public long TotalLength\n    {\n        get { return totalLength; }\n    }\n\n    \/\/\/ \n&lt;summary&gt;\n    \/\/\/ \u5728\u6536\u5230 Content-Length \u6807\u5934\u8c03\u7528\u7684\u56de\u8c03\u3002\n    \/\/\/ &lt;\/summary&gt;\n    \/\/\/ &lt;param name=&quot;contentLength&quot;&gt;\n    protected override void ReceiveContentLengthHeader(ulong contentLength)\n    {\n        this.contentLength = (long) contentLength;\n        totalLength = this.contentLength + currLength;\n    }\n\n    \/\/\/ \n&lt;summary&gt;\n    \/\/\/ \u4ece\u8fdc\u7a0b\u670d\u52a1\u5668\u6536\u5230\u6570\u636e\u65f6\u8c03\u7528\u7684\u56de\u8c03\u3002\n    \/\/\/ &lt;\/summary&gt;\n    \/\/\/ &lt;param name=&quot;data&quot;&gt;\n    \/\/\/ &lt;param name=&quot;dataLength&quot;&gt;\n    \/\/\/ \n&lt;returns&gt;&lt;\/returns&gt;\n    protected override bool ReceiveData(byte[] data, int dataLength)\n    {\n        \/\/ \u5982\u679c\u4e0b\u8f7d\u7684\u6570\u636e\u957f\u5ea6\u5c0f\u4e8e\u7b49\u4e8e0,\u5c31\u7ed3\u675f\u4e0b\u8f7d\n        if (contentLength &lt;= 0 || data == null || data.Length &lt;= 0)\n        {\n            return false;\n        }\n\n        fileStream.Write(data, 0, dataLength);\n        currLength += dataLength;\n        onProgress?.Invoke(currLength * 1.0f \/ totalLength, currLength, totalLength);\n        return true;\n    }\n\n    \/\/\/ \n&lt;summary&gt;\n    \/\/\/ \u5728\u4ece\u8fdc\u7a0b\u670d\u52a1\u5668\u63a5\u6536\u6240\u6709\u6570\u636e\u540e\u8c03\u7528\u7684\u56de\u8c03\n    \/\/\/ &lt;\/summary&gt;\n    protected override void CompleteContent()\n    {\n        \/\/ \u63a5\u6536\u5b8c\u6210\u6240\u6709\u6570\u636e\u540e\uff0c\u9996\u5148\u5173\u95ed\u6587\u4ef6\u6d41\n        Close();\n        \/\/ \u5982\u679c\u670d\u52a1\u5668\u4e0a\u4e0d\u5b58\u5728\u8be5\u6587\u4ef6\uff0c\u8bf7\u6c42\u4e0b\u8f7d\u7684\u5185\u5bb9\u957f\u5ea6\u4f1a\u4e3a0\n        \/\/ \u6240\u4ee5\u9700\u8981\u7279\u6b8a\u5904\u7406\u8fd9\u79cd\u60c5\u51b5\n        if (contentLength &lt;= 0)\n        {\n            onError(ErrorCode.DownloadContentEmpty, &quot;\u4e0b\u8f7d\u5185\u5bb9\u957f\u5ea6\u4e3a0&quot;);\n            return;\n        }\n        \/\/ \u5982\u679c\u4e0b\u8f7d\u5b8c\u6210\u540e\uff0c\u4e34\u65f6\u6587\u4ef6\u5982\u679c\u88ab\u610f\u5916\u5220\u9664\u4e86\uff0c\u4e5f\u629b\u51fa\u9519\u8bef\u63d0\u793a\n        if (!File.Exists(tempPath))\n        {\n            onError(ErrorCode.TempFileMissing, &quot;\u4e0b\u8f7d\u4e34\u65f6\u7f13\u5b58\u6587\u4ef6\u4e22\u5931&quot;);\n            return;\n        }\n        \/\/ \u5982\u679c\u4e0b\u8f7d\u7684\u6587\u4ef6\u5df2\u7ecf\u5b58\u5728\uff0c\u5c31\u5220\u9664\u539f\u6587\u4ef6\n        if (File.Exists(savePath))\n        {\n            File.Delete(savePath);\n        }\n        \/\/ \u901a\u8fc7\u4e86\u4ee5\u4e0a\u7684\u6821\u9a8c\u540e\uff0c\u5c31\u5c06\u4e34\u65f6\u6587\u4ef6\u79fb\u52a8\u5230\u76ee\u6807\u8def\u5f84\uff0c\u4e0b\u8f7d\u6210\u529f\n        File.Move(tempPath, savePath);\n        onCompleted(&quot;\u4e0b\u8f7d\u6587\u4ef6\u5b8c\u6210&quot;);\n    }\n\n    \/\/ \u5173\u95ed\n    public void Close()\n    {\n        if (fileStream == null) return;\n        fileStream.Close();\n        fileStream.Dispose();\n        fileStream = null;\n    }\n}\n<\/code><\/pre>\n<h3>\uff08\u56db\uff09\u5b9e\u73b0\u4e0b\u8f7d\u5668\u811a\u672c \uff08Downloader\uff09<\/h3>\n<pre><code class=\"language-csharp line-numbers\">public class Downloader\n{\n    private string url = null; \/\/ \u9700\u8981\u4e0b\u8f7d\u7684\u6587\u4ef6\u7684\u5730\u5740\n    private string savePath = null; \/\/ \u4fdd\u5b58\u7684\u8def\u5f84\n    private UnityWebRequest request = null; \/\/ Unity\u4e2d\u7528\u6765\u4e0eWeb\u670d\u52a1\u5668\u8fdb\u884c\u901a\u4fe1\u7684\u7c7b\n    private DownloadHandler downloadHandler = null; \/\/ \u6211\u4eec\u81ea\u5df1\u5b9e\u73b0\u7684\u4e0b\u8f7d\u5904\u7406\u7c7b\n    private ErrorEventHandler onError = null; \/\/ \u51fa\u9519\u56de\u8c03\n    private CompletedEventHandler onCompleted = null; \/\/ \u5b8c\u6210\u56de\u8c03\n    private ProgressEventHandler onProgress = null; \/\/ \u8fdb\u5ea6\u56de\u8c03\n\n    public Downloader(string url, string savePath, CompletedEventHandler onCompleted, ProgressEventHandler onProgress,\n        ErrorEventHandler onError)\n    {\n        this.url = url;\n        this.savePath = savePath;\n        this.onCompleted = onCompleted;\n        this.onProgress = onProgress;\n        this.onError = onError;\n    }\n\n    \/\/\/ \n&lt;summary&gt;\n    \/\/\/ \u5f00\u59cb\u4e0b\u8f7d\n    \/\/\/ &lt;\/summary&gt;\n    \/\/\/ &lt;param name=&quot;timeout&quot;&gt;\u8d85\u65f6\u65f6\u95f4\uff08\u79d2\uff09\n    public void Start(int timeout = 10)\n    {\n        request = UnityWebRequest.Get(url);\n        if (!string.IsNullOrEmpty(savePath))\n        {\n            request.timeout = timeout;\n            request.disposeDownloadHandlerOnDispose = true;\n            downloadHandler = new DownloadHandler(savePath, onCompleted, onProgress, onError);\n            \/\/ \u8fd9\u91cc\u662f\u8bbe\u7f6ehttp\u7684\u8bf7\u6c42\u5934\n            \/\/ range\u8868\u793a\u8bf7\u6c42\u8d44\u6e90\u7684\u90e8\u5206\u5185\u5bb9\uff08\u4e0d\u5305\u62ec\u54cd\u5e94\u5934\u7684\u5927\u5c0f\uff09\uff0c\u5355\u4f4d\u662fbyte\n            request.SetRequestHeader(&quot;range&quot;, $&quot;bytes={downloadHandler.CurrLength}-&quot;);\n            request.downloadHandler = downloadHandler;\n        }\n        request.SendWebRequest();\n    }\n\n    \/\/\/ \n&lt;summary&gt;\n    \/\/\/ \u6e05\u7406\n    \/\/\/ &lt;\/summary&gt;\n    public void Dispose()\n    {\n        onError = null;\n        onCompleted = null;\n        onProgress = null;\n        if (request!=null)\n        {\n            \/\/ \u5982\u679c\u4e0b\u8f7d\u6ca1\u6709\u5b8c\u6210\uff0c\u5c31\u4e2d\u6b62\n            if (!request.isDone)\n                request.Abort();\n            request.Dispose();\n            request = null;\n        }\n    }\n}\n\n<\/code><\/pre>\n<h3>\uff08\u4e94\uff09\u793a\u4f8b<\/h3>\n<p>\u7b80\u5355\u7684\u6d4b\u8bd5\u4e00\u4e0b\uff0c\u6309A\u952e\u5f00\u59cb\u4e0b\u8f7d\uff0c\u6309D\u952e\u7ed3\u675f\u4e0b\u8f7d\uff0c\u7136\u540e\u770b\u770b\u662f\u5426\u80fd\u591f\u65ad\u70b9\u7eed\u4f20<\/p>\n<pre><code class=\"language-csharp line-numbers\">using System;\nusing System.Collections;\nusing System.Collections.Generic;\nusing UnityEngine;\n\npublic class Example : MonoBehaviour\n{\n    private Downloader downloader;\n    private string url = &quot;http:\/\/vfx.mtime.cn\/Video\/2019\/03\/21\/mp4\/190321153853126488.mp4&quot;;\n    private string path;\n\n    private void Start()\n    {\n        path = Application.dataPath + &quot;\/..\/190321153853126488.mp4&quot;;\n    }\n\n    private void Update()\n    {\n        if (Input.GetKeyDown(KeyCode.A))\n        {\n            if (downloader != null)\n            {\n                return;\n            }\n            else\n            {\n                downloader = new Downloader(url, path, OnCompleted, OnProgress, OnError);\n                downloader.Start();\n            }\n        }\n\n        if (Input.GetKeyDown(KeyCode.D))\n        {\n            if (downloader != null)\n            {\n                downloader.Dispose();\n                downloader = null;\n            }\n        }\n    }\n\n    private void OnApplicationQuit()\n    {\n        if (downloader != null)\n        {\n            downloader.Dispose();\n            downloader = null;\n        }\n    }\n\n    private void OnProgress(float prg, long currLength, long totalLength)\n    {\n        Debug.LogFormat(&quot;\u4e0b\u8f7d\u8fdb\u5ea6{0:0.00}%,{1}M\/{2}M&quot;, (prg * 100), currLength * 1.0f \/ 1024 \/ 1024,\n            totalLength * 1.0f \/ 1024 \/ 1024);\n    }\n\n    private void OnCompleted(string msg)\n    {\n        Debug.Log(msg);\n    }\n\n    private void OnError(ErrorCode code, string msg)\n    {\n    }\n}\n<\/code><\/pre>\n<p><a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2021\/08\/wp_editor_md_4a908e004bea9dde83883c70b2fd01c9.jpg\"><img decoding=\"async\" layer-src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2021\/08\/wp_editor_md_4a908e004bea9dde83883c70b2fd01c9.jpg\" src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2021\/08\/wp_editor_md_4a908e004bea9dde83883c70b2fd01c9.jpg\" alt=\"\u300aUnity\u5b9e\u73b0\u65ad\u70b9\u7eed\u4f20\u4e0b\u8f7d\u529f\u80fd\u300b\" \/><\/a><br \/>\n<a class=\"wp-editor-md-post-content-link\" 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