Question

我使用下载管理器下载.ogg文件。我使用以下代码进行下载：

DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
            request.setDescription(list.get(position).getName());
            request.setTitle(list.get(position).getName());
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                request.allowScanningByMediaScanner();
                request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
            }
            request.setDestinationInExternalFilesDir(context, Environment.DIRECTORY_DOWNLOADS, list.get(position).getName() + ".ogg");

            DownloadManager manager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
            manager.enqueue(request);

现在我想共享此文件，所以我需要他的uri。

如何获取此文件uri？

Answer 1

方法DownloadManager.enqueue()返回一个ID（DOC IS HERE）。因此，您必须“存储”该ID以便以后进行操作（例如查询下载文件的Uri）。

这样，如果使用Uri（DOC HERE）成功下载了文件，则可以使用该ID来获取Uri getUriForDownloadedFile(long id);

编辑

如果您创建了BroadcastReceiver来接收有关已完成下载的广播，则在文件下载后立即可以获取Uri：

private int mFileDownloadedId = -1;

// Requesting the download
DownloadManager manager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
mFileDownloadedId = manager.enqueue(request);

// Later, when you receive the broadcast about download completed.
private BroadcastReceiver onDownloadComplete = new BroadcastReceiver() {
   @Override
   public void onReceive(Context context, Intent intent) {
       long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
       if (downloadedID == mFileDownloadedId) {
           // File received
           DownloadManager manager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
           Uri uri = manager.getUriForDownloadedFile(mFileDownloadedId);
       }
    }
}

如何获取我使用下载管理器下载的文件的URI？

1 个答案: