Android Emulator Error "Unfortunately Crystal Ball has stopped"

Your program is probably crashing. You can see the line of code that it's crashing on if you open the LogCat window (Go to Window -> Show View -> Other, then select LogCat under Android). One of the errors probably includes the text com.example.android.CrystalBall (or something like that). If you double click on that line, it'll take you to the line of code that caused the crash. My guess is that it's crashing because you're calling a method on an object that is null.

Hi Ben, Thanks I took the above steps and found a problem on line 40, I restarted the emulator then ran the code, but the "Unfortunately Crystal Ball has stopped" message appeared on the emulator again. I'll try again tomorrow when I finish work. Appreciate your help . thanks

Hi Ben, Thanks , here Is the code:

package com.example.crystal.ball;

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 abstract class MainActivity extends Activity {

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


    //declare our view variables
    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) {
            // The button was clicked so update the answer label with an answer
            String answer = " ";
            //\Randomly select one of the following answers yes, no or maybe
            Random randomGenerator = new Random(); //Construct a new random number generator
            //Update the label with our Dynamic Answer
            int randomNumber = randomGenerator.nextInt(3);
            answer = Integer.toString(randomNumber);


            answerLabel.setText(answer);





} 

    }); 

}

}

Hi Ben, Thanks, the LogCat is no longer showing any errors or warnings.