Understanding LiveData and DataBinding

Question

I am new to android development and MVVM and try to understand Databinding and LiveData.

• With one-way-DataBinding you can get Data from the viewmodel to the view.
• With two-way-DataBinding you can get Data from the viewmodel to the view and from the view to the viewmodel.

Also LiveData updates the view, when data changes in the viewmodel.

Why should I use LiveData, when DataBinding already does that in both one-way and two-way databinding?

What are the perks of using Databinding together with LiveData?

Answer 1

Why should I use LiveData, when DataBinding already does that in both one-way and two-way databinding?

LiveData is lifecycle aware. This means that the updates will be delivered to your UI when the Activity/Fragment is an state where those updates are meaningful.

What are the perks of using Databinding together with LiveData?

You get not worry about the lifecycle of your Activity/Fragment (livedata) and let Google generate the code to update your views for you (databinding).