complete this function: @Override public void onStart() { super.onStart(); if (authProfile.getCurrentUser() != null) { // Already logged in message Toast.makeText(getContext(), "Already logged in", Toast.LENGTH_LONG).show(); // Start user activity // startActivity(new Intent(getContext(), UserActivity.class)); requireActivity().finish(); } else { Toast.makeText(getContext(), "You can login now", Toast.LENGTH_LONG).show(); } }

@Override
    public void onStart() {
        super.onStart();
        if (authProfile.getCurrentUser() != null) {
            // Already logged in message
            Toast.makeText(getContext(), "Already logged in", Toast.LENGTH_LONG).show();
            // Start user activity
//            startActivity(new Intent(getContext(), UserActivity.class));
            requireActivity().finish();
        } else {
            Toast.makeText(getContext(), "You can login now", Toast.LENGTH_LONG).show();
        }
    }