- At least three fragments or activities;
- At least one data storage/request system;
- At least one master/detail using a RecyclerView;
- At least one Intent;
- At least one menu option;
- At least one data signal to be used (GPS, Camera, accelerometer, …);
- At least one extra feature you can freely choose. For instance:
- Authentication through Google’s Play Store or Firebase
- Sharing data between apps using a ContentProvider
- Etc… See links for more inspiration on what’s possible.