Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

can't open file downloaded through download manager api

I successfully downloaded a pdf file using DownloadManager API in android.

Manifest permissions are set correctly. File downloaded correctly.

But when it is tried to open it says "can't open file".

Please help to open the downloaded file. I guess I was failing to set the proper name and extension for the file. How to set it?

private void DownloadBook(String url, String title){

    DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
    //request.setDescription("Some descrition");
    String tempTitle = title.replace(" ","_");
    request.setTitle(tempTitle);
    // in order for this if to run, you must use the android 3.2 to compile your app
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        request.allowScanningByMediaScanner();
        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
    }
    request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, tempTitle+".pdf");

    // get download service and enqueue file
    DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
    request.setMimeType(".pdf");
    request.allowScanningByMediaScanner();
    request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI);
    manager.enqueue(request);
}
like image 286
Kalyan Dechiraju Avatar asked Jul 16 '14 18:07

Kalyan Dechiraju


2 Answers

Problem solved. The problem is in setting the MIME type for the downloaded file. By googling by default the server sends the file as its content type as application/x-download instead of application/pdf. So in the set mime type as pdf.

I changed this request.setMimeType(".pdf"); to request.setMimeType("application/pdf"); that's it.

like image 52
Kalyan Dechiraju Avatar answered Oct 26 '22 23:10

Kalyan Dechiraju


request.setMimeType() for different types of files on Kotlin if "can't open file" android DownloadManager

val downloadFile = download   // for example text.txt, text.xml, icon.jpg...
request.setMimeType(getMimeFromFileName(downloadFile))

private fun getMimeFromFileName(fileName: String): String? {
        val map = MimeTypeMap.getSingleton()
        val ext = MimeTypeMap.getFileExtensionFromUrl(fileName)
        return map.getMimeTypeFromExtension(ext)
    }
like image 24
Sergey Milakov Avatar answered Oct 26 '22 23:10

Sergey Milakov