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I've been following the lessons, but it seems like I've either skipped something or missed something along the way.

I get an yellow line underneath randomGenerator. Which basically means the value of the local variable is not being used. I can't figure out to make to make it be used?

Here's my code:

package com.example.crystalball;

import java.util.Random;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

    public void onCreate(Bundle savedInstanceState) {

        // Declare our View variables and assign them the Views from the layout file
        final TextView answerLabel = (TextView) findViewById(R.id.textView1);
        Button getAnswerButton = (Button) findViewById(R.id.button1);

        getAnswerButton.setOnClickListener(new View.OnClickListener() {

            public void onClick(View arg0) {

                String[] answers = {
                        "Let Me Think About it." ,
                        "I dont know if I can answer that!" ,
                        "What's the problem? Can't think it yourself?" ,
                        "Just go and do it!" ,
                        "Probably Not!" ,
                        "You got it!"
                // The button was clicked, so update the answer label with an answer
                String answer = "";

                // Randomly select one of three answers: Yes, No, or Maybe
                Random randomGenerator = new Random();
                int randomNumber = randomGenerator(answers.length);

                if (randomNumber == 0) {
                    answer = "Yes";
                 else if (randomNumber == 1) {
                    answer = "No";
                else if (randomNumber == 2) {
                    answer = "Maybe";

                else {
                    answer = "Sorry!";

                // Update the label with our dynamic answer

    protected int randomGenerator(int i) {
        // TODO Auto-generated method stub
        return 0;

    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;


2 Answers

Ben Jakuben
Ben Jakuben
Treehouse Teacher

Looking pretty good! It's an easy thing to miss because even with a close look everything appears to be in place. But check the line where you set randomNumber. You need to call the nextInt() method--I'm surprised that line isn't showing an error in Eclipse!

Ahh yes.

It actually showed me the error once I reached the refactoring section.

I see it. Thanks for the help!