How to download file with new Dropbox API?

Question

Dropbox now have an apsolutely new API, which is absolutely differ from the old one (it's interesting why), but there's no ANY actual examples in the internet, so I've found only some code in their examples. Here is it:

   // Download the file.
   try (OutputStream outputStream = new FileOutputStream (file)) {

       mDbxClient.files ()
       .download (metadata.getPathLower (), metadata.getRev ())
       .download (outputStream);

   }

I need to download file from remote folder to the local one, so I need to use this path for example:

.download ("Backups/backup.ab", "/storage/sdcard/Folder/backup.ab")

I've tried it, but get a error

IllegalArgumentException: String 'rev' does not match pattern'

Do you know, what it can be, and metadata.getPathLower () and metadata.getRev () methods are using for? I've learned, that metadata var gets from the first argv from execute (), but what this functions do?

Thanks a lot!

Answer 1

Not sure if if works for android. I have posted the following method just in case someone is looking for a C# .net solution.

private async Task Download(DropboxClient dbx, string folder, string file, string localFilePath)
    {
        using (var response = await dbx.Files.DownloadAsync(folder + "/" + file))
        {
            using (var fileStream = File.Create(localFilePath))
            {
                (await response.GetContentAsStreamAsync()).CopyTo(fileStream);
            }
        }
    }

Parameter example:

file = "YourFileName.pdf";
folder = "/YourDropboxFolderName";
localFilePath = @"C:\Users\YourUserName\YourFileName.pdf";