在 DownloadManager 上下载并在 setDestinationInExternalFilesDir() 中保存文件在 Android 10 上不起作用

Question

我DownloadManager用来保存来自服务器的 mp4。我将文件保存在storage/Emulated/0/Android/data/<packagename>/files/.Videos. 我注意到在 Android 9 和 android 11 上成功下载了它。但在 Android 10 中失败了。我试图将它附在try{}catch{}方法上，但在日志上看不到任何内容。我也尝试添加android:requestLegacyExternalStorage="true"我的Android Manifest.xml但错误仍然发生。我还提到了他/她使用的这个问题，setDestinationUri()但我仍然找不到方法。顺便说一句，这是我的片段DownloadRequest：

val path: String =
            context.getExternalFilesDir(null)?.absolutePath + "/" + ".Videos"

val downloadmanager: DownloadManager =
            context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
        val request: DownloadManager.Request = DownloadManager.Request(uri)
            .setTitle(videoName)
            .setDescription("Downloading")
            .setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE)
            .setDestinationInExternalFilesDir(context, ".Videos", "test1.mp4")
            //.setDestinationUri(Uri.fromFile(File(path, "test.mp4")))
            //.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS,videoName)
        val downloadId = downloadmanager.enqueue(request)

非常感谢所有回应:)

Answer 1

你可以试试这个，它适用于我的pdf下载：

 request.setDestinationInExternalFilesDir(this, Environment.DIRECTORY_DOCUMENTS, id+".pdf");

Environment我认为您可以通过更改变量来使用它。

编辑 1.0

 try{
            Uri uri = Uri.parse(downloadPath);

            DownloadManager.Request request = new DownloadManager.Request(uri);
            request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI);  // Tell on which network you want to download file.
            request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);  // This will show notification on top when downloading the file.
            request.setTitle("Downloading data..."); // Title for notification.
            request.setVisibleInDownloadsUi(true);
            request.addRequestHeader("Authorization", "bearer my bearertoken"));
            request.setDestinationInExternalFilesDir(this, Environment.DIRECTORY_DOCUMENTS, id+".pdf");
            ((DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE)).enqueue(request); // This will start downloading
        }catch(Exception e){
            
        }