I want my app to receive certain data types shared from other apps. I'm interested in text and URLs today, and maybe images later. UIActivity seems to be the way to start but I don't know what to do with the subclass I've created. I assume it at least needs to be declared in the app's properties, but I don't know where to read about that and nothing stands out in the project editor. I don't know the API or keywords to do my research, so if anyone can point me I'll appreciate it.