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Android Architectures

Majid Ramezanpour
Majid Ramezanpour

MVC, MVP and MVVM Sample Code: MVP : https://github.com/googlesamples/android-architecture/tree/todo-mvp/ MVVM : https://github.com/googlesamples/android-architecture/tree/todo-mvvm-databinding/ MVP/Dagger2/RxJava : https://github.com/maour/sample

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A N D R O I D A R C H I T E C T U R E S MVC, MVP, MVVM
A B O U T M E Majid Ramezanpour majid.ramezanpour@gmail.com
I F Y O U T H I N K G O O D A R C H I T E C T U R E I S E X P E N S I V E , T R Y B A D A R C H I T E C T U R E . BRIAN FOOTE AND JOSEPH YODER M V C M V P M V V M Model View Controller Model View Presenter Model View ViewModel
W H Y C O D E I S I N B A D S H A P E W I T H O U T A R C H I T E C T U R E ? keep track of the logic Unit Tests coverage difficult to debug Maintenance Scalability
M V C UI changes a lot more than logic desktop& web wanted separating UI functionality
Model View Controller Data Layer UI Layer Logic Layer handling network or database get notified of user's behavior and update model as needed
MVC
Point of MVC was to make Model testable So View & Controller was dependent on platform
P R O B L E M W I T H M V C ? Testability? difficult to unit test Modularity? model tightly coupled to views Maintenance? more&more code transfers to controller and get bloated
M V P BREAKS CONTROLLER
Model View Presenter Data Layer UI Layer Logic Layer handling network or database Controller from MVC without any reference to Android Activity/Fragment is part of view + layout.xml
MVP
MVP
M V V M ARCHITECTURE with DataBiding Easier Testing and Modularity Reduce Code to Connect View + Model
Android Architectures
Model View ViewModel Data Layer UI Layer Logic Layer handling network or database Like Presenter in MVP but can't access View directly. Bind to Observable variables and action exposed by ViewModel
Android Architectures
T H A N K S

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Android Architectures

  • 1. A N D R O I D A R C H I T E C T U R E S MVC, MVP, MVVM
  • 2. A B O U T M E Majid Ramezanpour majid.ramezanpour@gmail.com
  • 3. I F Y O U T H I N K G O O D A R C H I T E C T U R E I S E X P E N S I V E , T R Y B A D A R C H I T E C T U R E . BRIAN FOOTE AND JOSEPH YODER M V C M V P M V V M Model View Controller Model View Presenter Model View ViewModel
  • 4. W H Y C O D E I S I N B A D S H A P E W I T H O U T A R C H I T E C T U R E ? keep track of the logic Unit Tests coverage difficult to debug Maintenance Scalability
  • 5. M V C UI changes a lot more than logic desktop& web wanted separating UI functionality
  • 6. Model View Controller Data Layer UI Layer Logic Layer handling network or database get notified of user's behavior and update model as needed
  • 7. MVC
  • 8. Point of MVC was to make Model testable So View & Controller was dependent on platform
  • 9. P R O B L E M W I T H M V C ? Testability? difficult to unit test Modularity? model tightly coupled to views Maintenance? more&more code transfers to controller and get bloated
  • 10. M V P BREAKS CONTROLLER
  • 11. Model View Presenter Data Layer UI Layer Logic Layer handling network or database Controller from MVC without any reference to Android Activity/Fragment is part of view + layout.xml
  • 12. MVP
  • 13. MVP
  • 14. M V V M ARCHITECTURE with DataBiding Easier Testing and Modularity Reduce Code to Connect View + Model
  • 16. Model View ViewModel Data Layer UI Layer Logic Layer handling network or database Like Presenter in MVP but can't access View directly. Bind to Observable variables and action exposed by ViewModel
  • 18. T H A N K S