You sharing from Android Gallery? Which version of Android are you using?
You should be able to, for example, share directly to Dropbox from within Gallery by tapping the share icon in the upper right. (If you don't see Dropbox, there should be a "see all" option.)
Yes I want to share from the android gallery. I know how to do this, but only the images in the photoshop folder are giving me a problem. The files upload to dropbox, but when I open dropbox somewhere else (or even on the device I uploaded them from) the files dont have an extension, and instead of a thumbnail image it shows a generic file type icon. Same problem when I share via gmail. There are files attached, but no extension, generic icon, and unable to open. When I share directly from within the photoshop app everything is fine.
I just tried uploading several exported PS Touch projects (in JPEG format from the Photoshop Touch folder in Android Gallery) to Dropbox. I don't have any issues seeing them in the tablet app or the Windows 8 app. : /
Using a Nexus 7 2013 with Android 4.4.2.
Is this the stock (Google) Android Gallery app or one that Samsung provides? I'm using the former. See screenshots below.