Android accelerometer Sensor

package com.example.testaccel;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity implements SensorEventListener{

	Sensor accelerometer;
	SensorManager sm;
	TextView acceleration;
	int fares;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		sm=(SensorManager)getSystemService(SENSOR_SERVICE);
		accelerometer=sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
		sm.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_NORMAL);

		acceleration=(TextView)findViewById(R.id.acceleration);
	}

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

	@Override
	public void onAccuracyChanged (Sensor sensor, int accuracy){

	}




	@Override
	public void onSensorChanged(SensorEvent event) {
		// TODO Auto-generated method stub
				acceleration.setText("X: "+event.values[0]+
						"\nY: "+event.values[1]+
						"\nZ: "+event.values[2]);

	}



}