Android提供的下载类DownloadManager

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• Usage

String downUrl = "http://downloads.jianshu.io/apps/haruki/JianShu-1.11.2.apk";


 /**获得系统下载器*/ 
DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
/**设置下载地址*/ 
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(downUrl));
/**设置下载文件的类型*/ 
request.setMimeType("application/vnd.android.package-archive");
/**设置下载存放的文件夹和文件名字*/ 
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "JianShu-1.11.2.apk");
/**设置下载时或者下载完成时，通知栏是否显示*/ 
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setTitle("Download");
/**执行下载，并返回任务唯一id*/ 
long enqueue = dm.enqueue(request);