hey guys, have anybody tried <https://developer.android.com/topic/libraries/architecture/index.html>...

# android

[deviant]

hey guys, have anybody tried https://developer.android.com/topic/libraries/architecture/index.html ?
i'm not sure how to fetch resources (strings, colors etc) inside of ViewModel. Of course we can use AndroidViewModel which receives Application as a constructor param. But in this case we expose android implementation and can't easily test our ViewModel with unit tests (without mocking the app)

[aidanvii]

deviant: with ViewModel, I would create an wrapper of Resources and inject it via the constructor, perhaps provide an android implementation as a default constructor parameter, then you could mock it in tests easily.

[aidanvii]

This may be of use to you: https://github.com/exallium/mvvmexample2/tree/aidanvii/proposed-changes/presentation/src/main/java/com/exallium/mvvmcleanexample/presentation/utils/notifiable

[aidanvii]

here: https://goo.gl/VfU8GX

[aidanvii]

it doesn’t use ObservableFields though

[aidanvii]

here is a view model implementation using property delegates: https://github.com/exallium/mvvmexample2/blob/aidanvii/proposed-changes/presentation/src/main/java/com/exallium/mvvmcleanexample/presentation/users/UserEditViewModel.kt

[aidanvii]

the property delegates are explained here: https://github.com/exallium/mvvmexample2/blob/aidanvii/proposed-changes/presentation/src/main/java/com/exallium/mvvmcleanexample/presentation/utils/Extensions.kt