Android 利用重力感应监听 来电时翻转手机后静音

在CallNotifier.java中 加入如下代码：

        public void GetSensorManager(Context context) {                sm = (SensorManager) context                        .getSystemService(Service.SENSOR_SERVICE);                sensor = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);                mySensorListener = new SensorEventListener() {                    @Override                    public void onSensorChanged(SensorEvent event) {                        x = event.values[0];                         y = event.values[1];                         z = event.values[2];                                if (x < 1 && x > -1 && y < 1 && y > -1) {                                                    if (z > 0) {                                mGoUp = true;                                                            } else {                                                                mGoUp = false;                            }                                                    } else {        //                  if (x > 1 || x < -1 || y > 1 || y < -1 ) {                                                                if ( z > 0 && !mGoUp ) {                                    mRinger.stopRing();                                    if(mySensorListener != null){                                        sm.unregisterListener(mySensorListener);    //Add by kylin 2013.07.25                                                                            }                                }                                 if ( z < 0 && mGoUp ) {                                    mRinger.stopRing();                                    if(mySensorListener != null){                                        sm.unregisterListener(mySensorListener);    //Add by kylin 2013.07.25                                    }                                }                         //                  }                                                     }                                            }                                    @Override                    public void onAccuracyChanged(Sensor sensor, int accuracy) {                        // TODO Auto-generated method stub                            }                };                sm.registerListener(mySensorListener, sensor,                        SensorManager.SENSOR_DELAY_GAME);                            }  

    public class ShakeListener implements SensorEventListener {            public static ShakeListener sensor1;            // 速度阈值，当摇晃速度达到这值后产生作用            private static final int SPEED_SHRESHOLD = 400;            // 两次检测的时间间隔            private static final int UPTATE_INTERVAL_TIME = 70;                    // 传感器管理器            private SensorManager sensorManager;            // 传感器            private Sensor sensor;            // 重力感应监听器            private OnShakeListener onShakeListener;            // 上下文            private static Context context;            // 手机上一个位置时重力感应坐标            private float lastX;            private float lastY;            private float lastZ;                    // 上次检测时间            private long lastUpdateTime;                                                public static ShakeListener newInstance(Context c) {                if (sensor1 == null) {                    sensor1 = new ShakeListener();                    context = c;                    return sensor1;                } else {                    return sensor1;                }            }                    // 开始            public void start() {                // 获得传感器管理器                if(sensorManager==null){                    sensorManager = (SensorManager) context                    .getSystemService(Context.SENSOR_SERVICE);                  }                if (sensorManager != null&&sensor==null) {                    // 获得重力传感器                    sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);                }                if (sensor != null) {                    sensorManager.registerListener(this, sensor,                            SensorManager.SENSOR_DELAY_NORMAL);                }            }                                    // 停止检测            public void stop() {                sensorManager.unregisterListener(this);            }                    // 摇晃监听接口            public interface OnShakeListener {                public void onShake();            }                    // 设置重力感应监听器            public void setOnShakeListener(OnShakeListener listener) {                onShakeListener = listener;            }                    // 重力感应器感应获得变化数据            @Override            public void onSensorChanged(SensorEvent event) {                        long currentUpdateTime = System.currentTimeMillis();                // 两次检测的时间间隔                long timeInterval = currentUpdateTime - lastUpdateTime;                // 判断是否达到了检测时间间隔                if (timeInterval < UPTATE_INTERVAL_TIME) {                    return;                }                // 现在的时间变成last时间                lastUpdateTime = currentUpdateTime;                        // 获得x,y,z坐标                float x = event.values[0];                float y = event.values[1];                float z = event.values[2];                        // 获得x,y,z的变化值                float deltaX = x - lastX;                float deltaY = y - lastY;                float deltaZ = z - lastZ;                        // 将现在的坐标变成last坐标                lastX = x;                lastY = y;                lastZ = z;                        double speed = Math.sqrt(deltaX * deltaX + deltaY * deltaY + deltaZ                        * deltaZ)                        / timeInterval * 10000;                // 达到速度阀值，发出提示                if (speed >= SPEED_SHRESHOLD){                    // 手机晃动                    onShakeListener.onShake();                }            }            public void onAccuracyChanged(Sensor sensor, int accuracy) {                    }                }