This is in principle only a Demo.
It is a three-button menu, with flows in each option.
In total, about 10 screens, with some repetitions.
The idea is know your work, and later to spend the demo a real connection with our servers, and developing more applications in the Google environment
Attached screen flow, which should only go from one to another depending on options presented by the flow. But without any external connections or checks.
Allowed in some screens enter numeric fields without restriction or criteria. And take a picture of the user, open the photo application resident on the Android.
As a demo, it's all local, resident in the Terminal.
This is not going to publish in Android Store.