Detect Android Accelerometer sensor changed

package com.exercise.AndroidAccelerometer;

import java.util.List;

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

public class AndroidAccelerometer extends Activity {

 SensorManager sensorManager; boolean accelerometerPresent; Sensor accelerometerSensor;

 TextView x, y, z;

   /** Called when the activity is first created. */   @Override   public void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.main);       x = (TextView)findViewById(R.id.x);       y = (TextView)findViewById(R.id.y);       z = (TextView)findViewById(R.id.z);

       sensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);       List sensorList = sensorManager.getSensorList(Sensor.TYPE_ACCELEROMETER);       if(sensorList.size() > 0){        accelerometerPresent = true;        accelerometerSensor = sensorList.get(0);        }       else{        accelerometerPresent = false;        }   }

 @Override protected void onResume() {  // TODO Auto-generated method stub  super.onResume();  if(accelerometerPresent){   sensorManager.registerListener(accelerometerListener, accelerometerSensor, SensorManager.SENSOR_DELAY_NORMAL);   } }

 @Override protected void onStop() {  // TODO Auto-generated method stub  super.onStop();  if(accelerometerPresent){   sensorManager.unregisterListener(accelerometerListener);   } }

 private SensorEventListener accelerometerListener = new SensorEventListener(){

  @Override  public void onAccuracyChanged(Sensor arg0, int arg1) {   // TODO Auto-generated method stub

  }

  @Override  public void onSensorChanged(SensorEvent arg0) {   // TODO Auto-generated method stub   float x_value = arg0.values[0];   float y_value = arg0.values[1];   float z_value = arg0.values[2];   x.setText(String.valueOf(x_value));   y.setText(String.valueOf(y_value));   z.setText(String.valueOf(z_value));  }};}

Download the files.