accelerometer

package com.example.accelerometer;

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.view.Menu;

import android.widget.TextView;

public class MainActivity extends Activity implements SensorEventListener {

    //a TextView  

   private TextView tv;  

   //the Sensor Manager  

   private SensorManager sManager;  

 

   

   

   @Override

   public void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.activity_main);

       

     //get the TextView from the layout file  

       tv = (TextView) findViewById(R.id.tv);  

 

       //get a hook to the sensor service  

       sManager = (SensorManager) getSystemService(SENSOR_SERVICE);  

       

       

       

       

   }

   

   protected void onResume()  

   {  

       super.onResume();  

       /*register the sensor listener to listen to the gyroscope sensor, use the

       callbacks defined in this class, and gather the sensor information as quick

       as possible*/  

       sManager.registerListener(this, sManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),SensorManager.SENSOR_DELAY_FASTEST);  

   }  

   

   

   

   protected void onStop()  

   {  

       //unregister the sensor listener  

       sManager.unregisterListener(this);  

       super.onStop();  

   }  

   

   

   public void onAccuracyChanged(Sensor arg0, int arg1)  

   {  

       //Do nothing.  

   }  

   

   

   public void onSensorChanged(SensorEvent event)  

   {  

       //if sensor is unreliable, return void  

       if (event.accuracy == SensorManager.SENSOR_STATUS_UNRELIABLE)  

       {  

           return;  

       }  

 

       //else it will output the Roll, Pitch and Yawn values  

       tv.setText("Orientation X (Roll) :"+ Float.toString(event.values[2]) +"\n"+  

                  "Orientation Y (Pitch) :"+ Float.toString(event.values[1]) +"\n"+  

                  "Orientation Z (Yaw) :"+ Float.toString(event.values[0]));  

   }  

   

   

   

   @Override

   public boolean onCreateOptionsMenu(Menu menu) {

       getMenuInflater().inflate(R.menu.activity_main, menu);

       return true;

   }

   

}