App unable to start

private Bundle savedInstanceState;
private CrystalBall mCrystalBall = new CrystalBall();

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

    //Declare our View variables and assoign 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 v) {
            String answer = mCrystalBall.getAnAnswer();
            //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.
    ((MenuInflater) getMenuInflater()).inflate(R.menu.main, menu);
    return true;
}

public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}