如何在Android中的ExoPlayer中播放Youtube视频？

概述我试图在exoplayer中播放youtube视频,但这里有一些混乱我不知道什么是DASHurl, 我只有真正的youtube网址,如“https://www.youtube.com/watch?v=v1uyQZNg2vE”,我不知道如何生成破折号网址形式真实的网址.短划线网址：newSample("GoogleGlass","http://www.youtube.

我试图在exoplayer中播放youtube视频,但这里有一些混乱我不知道什么是DASH url,
 我只有真正的youtube网址,如“https://www.youtube.com/watch?v=v1uyQZNg2vE”,我不知道如何生成破折号网址形式真实的网址.

短划线网址：

new Sample("Google Glass",        "http://www.youtube.com/API/manifest/dash/ID/bf5bb2419360daf1/source/youtube?"        + "as=fmp4_audio_clear,fmp4_sd_hd_clear&sparams=ip,ipbits,expire,as&ip=0.0.0.0&"        + "ipbits=0&expire=19000000000&signature=255F6B3C07C753C88708C07EA31B7A1A10703C8D."        + "2D6A28B21F921D0B245CDCF36F7EB54A2B5ABFC2&key=ik0", DemoUtil.TYPE_DASH),

真实网址：

 https://www.youtube.com/watch?v=v1uyQZNg2vE

解决方法:

我已经编写了一个类,根据Karim Abdell Salam所描述的,使用带有视频ID的 http://www.youtube.com/get_video_info?&video_id=[video_id]&el=info&ps=default&eurl=&gl=US&hl=en网址检索实际的YouTube视频流网址,例如DASH和HLS.我还在使用ExoPlayer的应用中测试了网址,它的工作原理如下：

import java.io.BufferedinputStream;import java.io.IOException;import java.io.inputStream;import java.io.OutputStream;import java.io.UnsupportedEnCodingException;import java.net.httpURLConnection;import java.net.MalformedURLException;import java.net.ProtocolException;import java.net.URL;import java.net.URLDecoder;import java.util.Map;import java.util.TreeMap;/** * Represents youtube vIDeo information retrIEver. */public class YouTubeVIDeoInfoRetrIEver{    private static final String URL_YOUTUBE_GET_VIDEO_INFO = "http://www.youtube.com/get_vIDeo_info?&vIDeo_ID=";    public static final String KEY_DASH_VIDEO = "dashmpd";    public static final String KEY_HLS_VIDEO = "hlsvp";    private TreeMap<String, String> kvpList = new TreeMap<>();    public voID retrIEve(String vIDeoID) throws IOException    {        String targetUrl = URL_YOUTUBE_GET_VIDEO_INFO + vIDeoID+"&el=info&ps=default&eurl=&gl=US&hl=en";        SimplehttpClIEnt clIEnt = new SimplehttpClIEnt();        String output = clIEnt.execute(targetUrl, SimplehttpClIEnt.http_GET, SimplehttpClIEnt.DEFAulT_TIMEOUT);        parse(output);    }    public String getInfo(String key)    {        return kvpList.get(key);    }    public voID printAll()    {        System.out.println("TOTAL VARIABLES=" + kvpList.size());        for(Map.Entry<String, String> entry : kvpList.entrySet())        {            System.out.print( "" + entry.getKey() + "=");            System.out.println("" + entry.getValue() + "");        }    }    private voID parse(String data) throws UnsupportedEnCodingException    {        String[] splits = data.split("&");        String kvpStr = "";        if(splits.length < 1)        {            return;        }        kvpList.clear();        for(int i = 0; i < splits.length; ++i)        {            kvpStr = splits[i];            try            {                // Data is encoded multiple times                kvpStr = URLDecoder.decode(kvpStr, SimplehttpClIEnt.ENCoding_UTF_8);                kvpStr = URLDecoder.decode(kvpStr, SimplehttpClIEnt.ENCoding_UTF_8);                String[] kvpSplits = kvpStr.split("=", 2);                if(kvpSplits.length == 2)                {                    kvpList.put(kvpSplits[0], kvpSplits[1]);                }                else if(kvpSplits.length == 1)                {                    kvpList.put(kvpSplits[0], "");                }            }            catch (UnsupportedEnCodingException ex)            {                throw ex;            }        }    }    public static class SimplehttpClIEnt    {        public static final String ENCoding_UTF_8 = "UTF-8";        public static final int DEFAulT_TIMEOUT = 10000;        public static final String http_GET = "GET";        public String execute(String urlStr, String httpMethod, int timeout) throws IOException        {            URL url = null;            httpURLConnection conn = null;            inputStream inStream = null;            OutputStream outStream = null;            String response = null;            try            {                url = new URL(urlStr);                conn = (httpURLConnection) url.openConnection();                conn.setConnectTimeout(timeout);                conn.setRequestMethod(httpMethod);                inStream = new BufferedinputStream(conn.getinputStream());                response = getinput(inStream);            }            finally            {                if(conn != null && conn.getErrorStream() != null)                {                    String errorResponse = " : ";                    errorResponse = errorResponse + getinput(conn.getErrorStream());                    response = response + errorResponse;                }                if (conn != null)                {                    conn.disconnect();                }            }            return response;        }        private String getinput(inputStream in) throws IOException        {            StringBuilder sb = new StringBuilder(8192);            byte[] b = new byte[1024];            int bytesRead = 0;            while (true)            {                bytesRead = in.read(b);                if (bytesRead < 0)                {                    break;                }                String s = new String(b, 0, bytesRead, ENCoding_UTF_8);                sb.append(s);            }            return sb.toString();        }    }}

这是测试代码：

public static voID main(String[] args){    String youTubeVIDeoID = "v1uyQZNg2vE";    YouTubeVIDeoInfoRetrIEver retrIEver = new YouTubeVIDeoInfoRetrIEver();    try    {        retrIEver.retrIEve(youTubeVIDeoID);        System.out.println(retrIEver.getInfo(YouTubeVIDeoInfoRetrIEver.KEY_DASH_VIDEO));    }    catch (IOException e)    {        e.printstacktrace();    }}

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