I would like to know whether it is possible to open an arbitrary image file with the stock Gallery app (as distributed with the Samsung Galaxy SIII) by navigating the filesystem and drilling down the path to the image and clicking on the image to be opened. It seems to me that the only place it allows its users to select files from are the folders found under
/storage/emulated/0/DCIM (normal pictures), the folders found under
/storage/emulated/0/PhotoEditor for pictures created with the Samsung Photo Editor which can be installed from the Gallery application by clicking on the edit picture icon on the top-right-hand-side when viewing a picture,
/storage/emulated/0/Download for images downloaded from the web via a web browser, and other albums taken from Google Picasa Web.
Right now I'm guessing that when the stock Gallery application is opened, it just traverses the entire filesystem and for each directory which it finds which contains an image it displays the directory name along with the last image in such directory (and switches to a grid view for the images in that directory if clicked).
In any case, I would like to know if there's an alternative way to open an image directly form the stock Gallery app, e.g. Gallery could launch a file explorer application upon request once a picture is selected? Thanks.