The document discusses different architectural patterns for Android app development including separation of concerns, MVC, MVP, MVVM, and data binding. It emphasizes keeping the user interface, data logic, and business logic separated and modular for simple, testable code that is easy to extend. Data binding helps connect views and view models with strong or weak references to handle state saving and reduce boilerplate code.

1. Android App Architecture
Separation of Concerns

2. Simple,
Modular,Testable, Easy
to extend

3. Handling UI
events
DB and
network
View Logic
Activity / Fragment

4. MVC | MVP | MVVM

5. View Controller
Model
User Input
Update Model
Update
Query Latest Data

6. View Controller ModelPresenter
View Presenter
Contract

7. CODE

8. ● Saving State
● Android framework code
● Boilerplate
● View to presenter mapping

9. Android Data Binding

10. Data Binders
View Model
View
Strong reference
Weak reference

11. View Controller ModelPresenter
View Presenter
Contract

12. View Controller ModelView Model

13. CODE

14. Thank You