I want to develop an app which allows users to upload images to our server and once they are uploaded they can delete them from their phone, but still they can offline those and have a look at them, so how can I do this?
I know little about how to upload files to server, but I'm noob about how to develop our own offline system like YouTube etc... And the constraints are they can open photos in our app only and edit, view them. They should also hid from file system.
How can I do this?