Code below displays all available sensors (hardware and virtual)
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 SensorListActivity extends Activity implements SensorEventListener {
private SensorManager mSensorManager;
private TextView mTextView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
mTextView = (TextView) findViewById(R.id.text_view);
List<Sensor> mList
= mSensorManager.getSensorList(Sensor.TYPE_ALL);
for (int i = 1; i < mList.size(); i++) {
mTextView.append("\n" + mList.get(i).getName());
}
}
@Override
public void onAccuracyChanged(Sensor arg0, int arg1) {
// TODO Auto-generated method stub
}
@Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
}
protected void onPause(){
super.onStop();
}
protected void onStop() {
super.onStop();
}
protected void onResume()
{
super.onResume();
}
}
main.xml (just a textview to show the list of sensors)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="@+id/text_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>

Sensors list displayed on Nexus One