#4 ViewModelFactory Tutorial -Android ViewModelFactory example-Android Dependency Injection tutoria

Today our Topic is ViewModelFactory. ViewModelFactory is a specially designed class which follows the Factory Design pattern and creates ViewModel classes for us.

Full Playlist link : https://www.youtube.com/playlist?list=PLTNKiuHA_U6szz3Kg9baR5_01YasZXSul
Third part(Android LiveData Tutorial) link - https://youtu.be/ba8jP8Jc6qk
Second part(Android ViewModel Tutorial) link - https://youtu.be/TjBmz5daZVA


ViewModelFactory also provides some kind of very simple and modular dependency injection without using any Dependency Framework which is useful for small and medium size project. On a side note, please do not use ViewModelFactory as dependency injection in large projects, use any framework like Dagger or CodeIn instead. So,in this tutorial we will see how to use ViewModelFactory and why particularly it is useful. If you already familiar with Factory Design pattern then it will be easy to understand. But if you not, don’t worry, I have explained the Factory Design pattern later in this tutorial with example.
I demonstrate a super easy and simple way to write your Dependency Injection Implementation which does not require Dagger 2. Using AndroidViewModel, you can write a Dependency Injection Container is a few lines of code.
Since this project uses ViewModelProvider.Factory, I also show you how I wire that up.

Source code for this tutorial: https://bit.ly/2Sxead7
Factory Design Pattern example - https://www.educative.io/edpresso/what-is-the-factory-design-pattern-in-java
FaceBook Learning group : https://www.facebook.com/groups/545337292987590/

#AndroidViewModelFactory
#AndroidViewModelFactoryTutorial
#AndroidViewModelFactoryDependencyInjection
#AndroidAppDevelopmentTutorial
#AndroidDependencyInjection