private OnOrientationListener mOnOrientationListener;

public void setOnOrientationListener(OnOrientationListener mOnOrientationListener) {

this.mOnOrientationListener = mOnOrientationListener;

}

public interface OnOrientationListener {

void onOrientationChanged(float x);//float x = event.values[SensorManager.DATA_X];

}

public void onSensorChanged(SensorEvent event) {//方向发生变化

// TODO Auto-generated method stub

if (event.sensor.getType() == Sensor.TYPE_ORIENTATION) {//事件返回类型是方向传感器

// 这里我们可以得到数据，然后根据需要来处理  

float x = event.values[SensorManager.DATA_X];

if ((Math.abs(x - lastX)) > 1.0) {

if (mOnOrientationListener != null) {

//不为空进行回调

mOnOrientationListener.onOrientationChanged(x);

}

}

lastX = x;

}

}