update RecyclerView with Android LiveData

Question

There are many examples how to push new list to adapter on LiveData change.

I\'m trying to update one row (e.g number of comments for post) in the huge list. It would be

Answer 1

add context to your adapterClass construstor : AdpaterClass(context: Context)

then smart cast the context to AppCompactActivity

livedata.observe(context as AppCompatActivity, Observer {it ->

        //perform action on it(livedata.value)
    })

when calling the adapter from anywhere activity, fragment pass the context into the adpater