Accessing variables inside a model passed to live data

Question

in User repository, I am fetching the data from the database and I cast into the model class User.

How do I access two variables user and email of the model class inside the live data?

ViewModel

class MyViewModel (private val repository: UsrRepository) : ViewModel() {

private var cUser : LiveData<User> = repository.getCacheUser()

val user: LiveData<String> = cUser.user
val email: LiveData<String> = cUser.email

}

Xml

<TextView
            android:text="@{viewmodel.user}"

<TextView
            android:text="@{viewmodel.email}"

Answer 1

Since you are not doing any transformations on the data provided by cUser, you can just make it public in your ViewModel:

val cUser: LiveData<User> = repository.getCacheUser()

Then access the user properties from the LiveData directly in the layout:

android:text="@{viewmodel.cUser.user}"
android:text="@{viewmodel.cUser.email}"

If you did not want to use the raw values, and instead some other computed values, you would instead expose a transformation of cUser, creating a new LiveData that has values modified from the original.