Hi there. I have a question concerning `AAC MVVM` ...

# android-architecture

[ubu]

Hi there. I have a question concerning AAC MVVM implementation. I have an activity with several view models, and I need to connect these. Currently I use activity as a kind of proxy between them. But that feels wrong. What would be the best way for one view model to observe events from other view model? Or is it completely wrong way of implementing MVVM architecture?

[dknapp]

https://developer.android.com/topic/libraries/architecture/viewmodel#sharing ?

[dknapp]

Ah I misread, multiple VM in one view. You could always inject an instance of LiveData (or a subject if you’re using Rx) into each of them and observe those changes

[trent]

I do this what OP says also. I guess one could delegate such connections to another class, but if Activity is light enough & some UI side-effects will be handled anyway then I don’t see what’s wrong with Activity connecting stuff 🤷