Not getting RESPONSES with Crystal Ball

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Declare our View variables and assign them the View from the layout file

    final TextView answerLabel = (TextView) findViewById(R.id.textView1);
    Button getAnswerButton = (Button) findViewById(R.id.button1);

    getAnswerButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // The button was clicked, so update the answer label with an answer
            String answer = "";

            // Randomly select one of three answers: yes, no, maybe
            Random randomGenerator = new Random();

            // Construct a new Random generator
            int randomNumber = randomGenerator.nextInt(3);


            /* Convert the randomNumber to a text answer
             * 0 = Yes
             * 1 = No
             * 2 = Maybe
             */

            if (randomNumber == 0) {
                answer = "Yes";
            }   
            else if (randomNumber == 1) {
                answer = "No";
            }
            else if (randomNumber == 2) {
                answer = "Maybe";   
            }
            else {
                answer = "Sorry, there was a mistake!!";
            }

            // Update the label with our dynamic answer

            answerLabel.setText(answer);
        }
    });
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}