In lesson 9: Intro to ViewModels and LiveData, step 4 says "Open ui.detail.DetailActivity. Have DetailActivity extend LifecycleActivity instead of AppCompatActivity." LifecycleActivity is now a component of AppCompatActivity. Extending LifecycleActivity will produce compile errors.
In lesson 9: Intro to ViewModels and LiveData, step 4 says "Open ui.detail.DetailActivity. Have DetailActivity extend LifecycleActivity instead of AppCompatActivity." LifecycleActivity is now a component of AppCompatActivity. Extending LifecycleActivity will produce compile errors.