import android.app.Activity;
import android.os.Bundle;

public class SensorTest extends Activity {
/** Called when the activity is first created. */
SensorListenerTest sensorListenerTest;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// 传参数的时候，用this，不是自己新建的Context
sensorListenerTest = new SensorListenerTest(this);
}

// 添加OnResume和OnStop，注册和取消Sensor服务。
@Override
protected void onResume() {
// 监听服务，在activity和Listener里面都要注册，这是一个难点。不要只在一个地方注册。
// TODO Auto-generated method stub
super.onResume();
sensorListenerTest.enableSensor();

}

@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
sensorListenerTest.disableSensor();
}

}

import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.util.Log;

public class SensorListenerTest implements SensorEventListener {
private SensorManager mSensorManager;
private Sensor sensor;
private float mLastX, mLastY, mLastZ;
private Context mContext;

public SensorListenerTest(Context context) {
mContext = context;
// 在构造函数里面注册Sensor服务
enableSensor();
}

// 注册传感器服务，在本java和Activity里面都要注册，但是取消注册的时候，只在activity里面取消注册即可。
public void enableSensor() {
// 在这里真正注册Service服务
mSensorManager = (SensorManager) mContext
.getSystemService(Context.SENSOR_SERVICE);
sensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);

if (mSensorManager == null) {
Log.v("sensor..", "Sensors not supported");
}

mSensorManager.registerListener(this, sensor,
SensorManager.SENSOR_DELAY_NORMAL);

}

// 取消注册传感器服务
public void disableSensor() {
if (mSensorManager != null) {
mSensorManager.unregisterListener(this);
mSensorManager = null;
}
}

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

}

@Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
if (event.sensor == null) {
return;
}

if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
mLastX = event.values[SensorManager.DATA_X];
mLastY = event.values[SensorManager.DATA_Y];
mLastZ = event.values[SensorManager.DATA_Z];
String sX = String.valueOf(mLastX);
String sY = String.valueOf(mLastY);
String sZ = String.valueOf(mLastZ);

Log.v("mLastX==", sX);
Log.v("mLastY==", sY);
Log.v("mLastZ==", sZ);
}
}

}