我可以使用下载管理器从服务器下载视频。但是,当我使用以下代码记录路径时。
String path = Environment.getExternalStoragePublicDirectory(directory).getAbsolutePath() + subpath;
Log.e("PATH", path);
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我得到
12-15 13:29:36.787 22807-22807/com.ezyagric.extension.android E/PATH:/storage/sdcard0/EZYAGRIC/Soil Testing.mp4。
现在这与手机上的路径不同
/storage/sdcard0/Android/data/com.ezyagric.extension.android/files/EZYAGRIC/Crop Insurance.mp4
是什么带来了这种差异,如何才能获得手机中的路径?
用于在默认下载目录中下载文件的代码片段。
DownloadManager.Request dmr = new DownloadManager.Request(Uri.parse(url));
// If you know file name
String fileName = "filename.xyz";
//Alternative if you don't know filename
String fileName = URLUtil.guessFileName(url, null,MimeTypeMap.getFileExtensionFromUrl(url));
dmr.setTitle(fileName);
dmr.setDescription("Some descrition about file"); //optional
dmr.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
dmr.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
dmr.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
DownloadManager manager = (DownloadManager) mContext.getSystemService(Context.DOWNLOAD_SERVICE);
manager.enqueue(dmr);
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注意对于mContext.getSystemService
getSystemService();getActivity.getSystemService();mContext.getSystemService(); //pass context in adapter 更新
由于 OP 想要检查文件是否存在
File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), fileName);
if(file.exists()){//File Exists};
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