Cannot create an instance of class ViewModel

Question

I am trying to write a sample app using Android architecture components and but even after trying for days I could not get it to work. It gives me the above exception.

Answer 1

If you used viewmodel inside your activity check that your activity extends "DaggerAppCompatActivity" or not

For instance

public class UserComments extends AppCompatActivity 

change this to

public class UserComments extends DaggerAppCompatActivity