Android:如何检测android的感光器是否被手覆盖

<uses-permission android:name="android.permission.CAMERA" />

SensorManager sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
Sensor lightSensor = sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);

SensorEventListener lightSensorListener = new SensorEventListener() {
    @Override
    public void onSensorChanged(SensorEvent event) {
        float lightValue = event.values[0];
        if (lightValue == 0) {
            // 感光器被手覆盖
        } else {
            // 感光器未被手覆盖
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // 精度变化时的处理
    }
};

sensorManager.registerListener(lightSensorListener, lightSensor, SensorManager.SENSOR_DELAY_NORMAL);

@Override
protected void onPause() {
    super.onPause();
    sensorManager.unregisterListener(lightSensorListener);
}