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

Question

我正在使用 DownloadManager 保存来自服务器的 mp4。我正在 storage/Emulated/0/Android/data/<packagename>/files/.Videos 上保存文件。我注意到 Android 9 和 android 11 正在成功下载它。但是在 Android 10 失败了。我试图将它附在 try{}catch{} 方法上，但我在日志上看不到任何内容。我也尝试在我的 Android Manifest.xml 上添加 android:requestLegacyExternalStorage="true" 但错误仍然存在。我还提到 this 问题 he/she 使用 setDestinationUri() 但我仍然找不到方法。顺便说一句，这是我的 DownloadRequest:

片段

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)

非常感谢所有回复:)

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");

我想您可以通过更改 Environment 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){
            
        }

Answer 2

使用中仍有问题request.setDestinationInExternalFilesDir(this, Environment.DIRECTORY_DOCUMENTS, "filename.pdf");

这对我有效：

    val file = File(getPicturesDirPath(this), filename)
    val destUri = Uri.fromFile()
    request.setDestinationUri(destUri)
    
    private fun getPicturesDirPath(activity: Context): String{
            val file: File = activity.getExternalFilesDir(Environment.DIRECTORY_PICTURES)!!
            if (!file.exists()) {
                file.parentFile.mkdirs()
                file.mkdir()
            }
    
            return file.absolutePath + "/"
    }

确保将 Environment.DIRECTORY_PICTURES 更改为所需目录

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

downloading on DownloadManager and saving file in setDestinationInExternalFilesDir() is not working on Android 10

android

download-manager

kotlin

android-10.0