I've done a bit of research, but I do not know how to do it to be in the list of applications that can open a certain type of file, for example, a photo. What I want is as if whatsapp (or any other application) places my app in the list of applications that can return information (such as the photo case) for that application. Is there any way? If yes, how? And how would I return the information to the application that made the request for my implementation?