在Android上下载时，Symfony2 PDF的格式无效

I'm using this code to prompt for a file download on Symfony 2.7. It's working on Windows/Mac/iPhone, but not on Android:

        if (!file_exists($path)) {
            throw $this->createNotFoundException('File not found.');
        }

        $response = new BinaryFileResponse($path);
        $response->trustXSendfileTypeHeader();
        $response->setContentDisposition(
            ResponseHeaderBag::DISPOSITION_ATTACHMENT,
            $name,
            iconv('UTF-8', 'ASCII//TRANSLIT', $name)
        );

When tapping the link, the download starts but then the error appears: Filename.pdf is of invalid format. If I press the link and select "Save Link", then the PDF si downloaded correctly and I can open it.

Does anyone know how to fix the download on Android? (tested using version 5).

Thank you

The code it's not the problem. I changed the file extension to uppercase and now it's working on Android: filename.pdf -> filename.PDF Stupid, I know.

Have you tried something like this:

$response->headers->set('Content-Type', 'application/pdf');
$response->setContentDisposition(
    ResponseHeaderBag::DISPOSITION_ATTACHMENT,
    'filename.pdf'
);

Don't know what your PDF would be referred to. Essentially adding the 'Content-Type' headers of PDF to see if that makes a difference. I'm not certain if this will work.

Edit #2 I saw this link: http://www.digiblog.de/2011/04/android-and-the-download-file-headers/

So try this header change:

$response->headers->set('Content-Type', 'octet-stream');
$response->setContentDisposition(
  ResponseHeaderBag::DISPOSITION_ATTACHMENT,
  'filename.pdf'
);

Try it, and see if that changes the result.

Actually, thanks for your answer. I searched and found this:

http://www.digiblog.de/2011/04/android-and-the-download-file-headers/

Looks like there is a problem with older versions of Android. Maybe in your code you can check for that, and create the proper CASE for the file based on the browser.