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.Toast;

public class SensorTest extends Activity implements SensorEventListener {

boolean isRegSensor = false;

private SensorManager sensorManager;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

}

@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();

List<Sensor> sensors = sensorManager
.getSensorList(Sensor.TYPE_ORIENTATION); // 方向传感器

if (sensors.size() > 0) {
Sensor sensor = sensors.get(0);
isRegSensor = sensorManager.registerListener(this, sensor,
SensorManager.SENSOR_DELAY_FASTEST);//
}
}

public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub

// 处理精度改变

}

@Override
protected void onDestroy() {
// TODO Auto-generated method stub

if (isRegSensor) {
sensorManager.unregisterListener(this);
isRegSensor = false;
}

super.onDestroy();
}

public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
// 处理方向改变等

Toast.makeText(this, "X值为：" + event.values[SensorManager.AXIS_MINUS_X],
Toast.LENGTH_LONG).show();

}

}