How to make a user sign out in Firebase?

Question

I am making a simple authentication app in Android using Firebase authentication. Till now I am successful in signing the user in, however the issue is that the user remains

Answer 1

logout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
  firebaseAuth.getInstance().signOut();
  Intent intent = new Intent(SettingsActivity.this,SignInActivity.class);
  startActivity(intent);
  }
});