如何使用下载管理器类从服务器下载视频文件 [英] How to download video file from server using download manager class

问题描述

我的问题是我如何使用下载管理器claas下载视频？



我尝试了什么：

 downloadManager =（DownloadManager）getSystemService（Context.DOWNLOAD_SERVICE）; 
 Uri Download_Uri = Uri.parse（  https：//r6---sn-4g5edn7z.googlevideo。 COM / videoplayback？sparams = CLEN，DUR，EI，到期，GIR，ID，initcwndbps，IP，ipbits，ITAG，存活，LMT，MIME，毫米，MN，MS，MV，NH，pcm2cms，PL，requiressl，来源， UPN&安培; CLEN = 2281997&安培;源= YouTube和安培; MIME =视频％2Fwebm&安培; requiressl = YES&安培; ipbits = 0&安培;签名= 2B3FEC4A1207E13057510479A324BEF4A4C36097.27E695A45BA64A999E7C49A9A9E55943C3647FEA&安培; GIR = YES&安培; UPN = bb7P5QNar4A&安培; EI = wmsZWIq3LomQjAbghYXwCg&安培; PL = 18&安培; IP = 39.46。 187.91和ID =邻ADkQrc2OSGBMttIbY60smPkeakibLgTGXqQZuRYSs1Ve&安培;存活= YES&安培;到期= 1478082594&安培; ITAG = 278安培; DUR = 193.151&安培;键= CMS1&安培; LMT = 1478032654888965&安培; CPN = YPiRbJBmQGztUmtx&安培; ALR = YES&安培; ratebypass = YES和C = WEB&安培; cver = 1.20161031&安培; cm2rm = SN-2uja-pncz7d，SN-hpazl76&安培; redirect_counter = 2及cms_redirect = YES&安培;毫米= 34&安培; MN = SN-4g5edn7z&安培; MS = LTU&安培; MT = 1478060931&安培; MV = M&安培; NH = IgpwcjAzLm1pbDAxKgkxMjcuMC4w LJE&安培; REQ_ID = efd53053a8c04649&安培; RN = 4\" ）; 
 DownloadManager.Request request =  new  DownloadManager.Request（Download_Uri）; 
 
 request.setAllowedNetworkTypes（DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE）; 
  //   request.setAllowedOverRoaming（false）;  
 
请求.setTitle（ 我的数据下载）; 
 request.setDescription（  DownLoading .........）; 
 request.setDestinationInExternalFilesDir（ this ，Environment.DIRECTORY_DOWNLOADS，  CountryList.json）; 
 downloadReference = downloadManager.enqueue（request）; 
 
 TextView showCountries =（TextView）findViewById（R.id.countryData）; 
 showCountries.setText（ 从服务器获取数据，请等待......）; 

解决方案

参见 DownloadManager | Android开发者 [ ^ ]

my problem is that how can i dowmload video using download manager claas??

What I have tried:

downloadManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
                Uri Download_Uri = Uri.parse("https://r6---sn-4g5edn7z.googlevideo.com/videoplayback?sparams=clen,dur,ei,expire,gir,id,initcwndbps,ip,ipbits,itag,keepalive,lmt,mime,mm,mn,ms,mv,nh,pcm2cms,pl,requiressl,source,upn&clen=2281997&source=youtube&mime=video%2Fwebm&requiressl=yes&ipbits=0&signature=2B3FEC4A1207E13057510479A324BEF4A4C36097.27E695A45BA64A999E7C49A9A9E55943C3647FEA&gir=yes&upn=bb7P5QNar4A&ei=wmsZWIq3LomQjAbghYXwCg&pl=18&ip=39.46.187.91&id=o-ADkQrc2OSGBMttIbY60smPkeakibLgTGXqQZuRYSs1Ve&keepalive=yes&expire=1478082594&itag=278&dur=193.151&key=cms1&lmt=1478032654888965&cpn=YPiRbJBmQGztUmtx&alr=yes&ratebypass=yes&c=WEB&cver=1.20161031&cm2rm=sn-2uja-pncz7d,sn-hpazl76&redirect_counter=2&cms_redirect=yes&mm=34&mn=sn-4g5edn7z&ms=ltu&mt=1478060931&mv=m&nh=IgpwcjAzLm1pbDAxKgkxMjcuMC4wLjE&req_id=efd53053a8c04649&rn=4");
                DownloadManager.Request request = new DownloadManager.Request(Download_Uri);

                request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
               // request.setAllowedOverRoaming(false);

                request.setTitle("My Data Download");
                request.setDescription("DownLoading.........");
                request.setDestinationInExternalFilesDir(this, Environment.DIRECTORY_DOWNLOADS, "CountryList.json");
                downloadReference = downloadManager.enqueue(request);

                TextView showCountries = (TextView) findViewById(R.id.countryData);
                showCountries.setText("Getting data from Server, Please WAIT...");

解决方案

See DownloadManager | Android Developers[^].

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