LoginActivity with code for FirebaseAuthentication using email and password

LoginActivity.kt

bLogin.setOnClickListener {
                Timber.d("email %s and password %s", email, password)
                auth.signInWithEmailAndPassword(email, password)
                    .addOnCompleteListener(this@LoginActivity) { task ->
                        if (task.isSuccessful) {
                            Timber.d("signInWithEmail:success")
                            val user = auth.currentUser
                            updateUI(user)
                        } else {
                            task.exception?.printStackTrace()
                            
                        }
                    }
            }