I am quite surprising that the original Gallery application doesn't come with a feature : Organize photos in folders.
Hence, I did a quick try on FishBowlPhoto. It is able to organize my photos in different folders.
Very soon, I realize that FishBowlPhoto organizes the photos, by moving them from original location (/sdcard/DCIM/Camera/*.jpg) to new location (/sdcard/FishBowlPhoto/bookcase/*.jpg).
I was expecting my original Gallery will be confuse, after FishBowlPhoto moves away few photos to different location.
However, to my surprise, Gallery still know which photos has been move to different location, and able to display the photos in bookcase category instead of original Camera category.
May I know what is the working mechanism behind FishBowlPhoto? That even it has moved away few photos, it will not make Gallery unable to locate the moved photos?