Android :: What Kind Of Intent Does Gmail Use For Attachments?

When I get my activity chooser for my ACTION_GET_CONTENT Intent there is applications I don't want to be there, like the ones who will first create content and then pass the URI to me, like the Voice Recorder. When you use Gmail and try to attach a file you will only see the applications/activities that picks data from your SDCard like Gallery, and in my case Astro (file manager application).

So my question is, what kind of Intent does Gmail use for their Attach? Here is my code, something must be missing since I get applications like Voice Recorder and so on.
Intent action = new Intent(Intent.ACTION_GET_CONTENT);
action = action.setType("*/*").addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(Intent.createChooser(action, "Upload file from..."), 1);