Xamarin user group san diego - mvvm cross
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The second San Diego Xamarin User Group meet-up discussed the MVVM (Model-View-ViewModel) architectural pattern and MVVMCross, which applies this pattern to various platforms including Xamarin and Windows. Key topics included the advantages and disadvantages of MVVM, concepts like Inversion of Control and Dependency Injection, and practical demonstrations. The next meet-up is scheduled for May 14, 2015.
Xamarin user group san diego - mvvm cross
- 1. Welcome To The 2nd San Diego Xamarin User Group Meet-Up April 9th, 2015
- 3. Agenda 1. What is MVVM? 2. What is MVVM Cross? 3. Advantages / Disadvantages 4. Demo 5. Q&A 6. Bonus
- 4. What Is MVVM? • Model, View, ViewModel • Traditionally iOS is developed in MVC (Model, View, Controller) • Everything can be tightly coupled (delegation pattern) • Easy to do wrong • Traditionally Android is developed in ??? • Tight coupling between views (AXML) and logic (views get inflated)
- 6. What Is MvvmCross? • a.k.a. MvX • applies MVVM pattern to • Xamarin.iOS, Xamarin.Android, Windows Universal • Xamarin.Mac, Windows Store, … • IoC and Dependency Injection are core concepts • Makes for easily testable code • https://github.com/MvvmCross/MvvmCross
- 7. What Is Inversion Of Control? • http://en.wikipedia.org/wiki/Inversion_of_control in traditional programming, the custom code that expresses the purpose of the program calls into reusable libraries to take care of generic tasks, but with inversion of control, it is the reusable code that calls into the custom, or task-specific, code.
- 8. What Is Dependency Injection? • http://en.wikipedia.org/wiki/Dependency_injection the client part of a program which uses a module or service doesn't need to know all its details, and typically the module can be replaced by another one of similar characteristics without altering the client.
- 9. Advantages / Disadvantages Advantages: • Interchangeable code modules • Supports test driven development (TDD) • Core pattern to follow (Code Review) • DataBindings Disadvantages: • It is a non-native pattern for iOS and Android • core 3rd party dependency • Lot’s of glue code for Custom Bindings (Value Converters) • documentation contains a high amount of kitten
- 10. DEMO
- 11. Q & A
- 12. Bonus atp.fm Hosted by Marco Arment, Casey Liss, John Siracusa hanselminutes.com Hosted by Scott Hanselman
- 13. Next Meet-Up • May 14th, 2015 • Same Place • Same Time • Less Kitten