Avoiding content type issues when downloading a file via browser on Android

Question

If I have a file made available to a browser through my webapp, I normally just set the URL to something like http://website.com/webapp/download/89347/image.jpg

Answer 1

To make any downloads work on all (and especially older) Android versions as expected, you need to...

1. set the ContentType to application/octet-stream
2. put the Content-Disposition filename value in double quotes
3. write the Content-Disposition filename extension in UPPERCASE

Read my blog post for more details:
http://digiblog.de/2011/04/19/android-and-the-download-file-headers/