前言： 在安卓《第一行代码》里面关于百度地图sdk的学习中，发现书上的代码只实现到把自己（即定位图标）显示在地图上这一步，而图标的指向是固定的不会随手机方向改变而改变，用起来挺别扭的，故我自己查文档实现了这一功能。
具体实现：一、在书上代码的基础上，自己写一个MyOrientationListener用于监听方向传感器。
public class MyOrientationListener implements SensorEventListener { private Context context; private SensorManager sensorManager; private Sensor sensor; private float lastX; //用于记录最后一次从方向传感器获得的x值 private OnOrientationListener onOrientionListener; //内部接口实现回调 public interface OnOrientationListener{ void onOrientationChanged(float x); } public MyOrientationListener(Context context){ this.context=context; } public void setOnOrientionListener(OnOrientationListener onOrientionListener){ this.onOrientionListener=onOrientionListener; } @Override public void onSensorChanged(SensorEvent event) { //手机方向改变时调用 if (event.sensor.getType()==Sensor.TYPE_ORIENTATION){ float x=event.values[SensorManager.DATA_X]; if (Math.abs(xlastX)>1.0 //设置条件防止频繁回调 {onOrientionListener.onOrientationChanged(x); lastX=x;} } } @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { } public void onStart(){ //获取传感器sensor并与onOrientionListener绑定 sensorManager=(SensorManager)context.getSystemService(Context.SENSOR_SERVICE); if (sensorManager!=null){sensor=sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);} if(sensor!=null){sensorManager.registerListener(this,sensor,SensorManager.SENSOR_DELAY_UI);} } public void onStop(){ sensorManager.unregisterListener(this); //传感器解除绑定 } }二、在Mainactivity中初始化MyOnrientationListener
private MyOrientationListener myOrientationListener; private double mCurrentLantitude; //此刻的纬度值 private double mCurrentLongtitude; //此刻的经度值 private int mXDirection; //此刻的x值，方向由传感器测出，范围0~360，为手机方向与北极的角度 private void initOrientationListener(){ myOrientationListener=new MyOrientationListener(getApplicationContext()); myOrientationListener.setOnOrientionListener(new MyOrientationListener.OnOrientationListener() { @Override public void onOrientationChanged(float x) { mXDirection=(int)x; // Log.d("MainActivity"," "+x); builder=new MyLocationData.Builder(); builder.longitude(mCurrentLongtitude).latitude(mCurrentLantitude).direction(mXDirection); data=builder.build(); baiduMap.setMyLocationData(data); //手机方向改变实时改变图标指向 MyLocationConfiguration configuration = new MyLocationConfiguration(MyLocationConfiguration.LocationMode.NORMAL, true, null ); baiduMap.setMyLocationConfigeration(configuration); } }); }注意：得把MyLocationConfiguration的构造函数第二个参数设置我为true才可显示方向信息，即图标方向才会改变。 三、管理传感器
protected void onStart(){ super.onStart(); myOrientationListener.onStart();} protected void onStop(){ super.onStop(); myOrientationListener.onStop();}