Android Multipart HTTP Post does not send the File's MIME type

Question

Trying to figure what\'s wrong with my codings. I followed a blog post from here.

I managed to get the codes to actually upload the file to a PHP web service. However, f

Answer 1

I just had the same issue when updating HttpClient from version 4.1 to version 4.4. Neither removing HttpMultipartMode.BROWSER_COMPATIBLE nor replacing with other alternative options did help.

A solution that requires the minimum change for me is to explicitly specify the filename when constructing a FileBody, i.e. replacing

new FileBody(file, mimeType)

with

new FileBody(file, filename, mimeType, charset)

As for version HttpClient 4.4, the reason might be that new FileBody(file, mimeType) assigns null to the filename field rather than uses file.getName(). Then, when executing formatMultipartHeader in HttpMultipart, the filename of the part that is going to be formatted is checked if not null in BROWSER_COMPATIBLE mode. If null, then the whole body is ignored.