question: get the current roll of the device in degrees . concode_field_sep float[] magData concode_elem_sep float[] accelData concode_elem_sep Sensor magnetometer concode_elem_sep float roll concode_elem_sep float yaw concode_elem_sep Sensor accelerometer concode_elem_sep Context context concode_elem_sep SensorManagerFactory instance concode_elem_sep SensorManager sensorManager concode_elem_sep float pitch concode_elem_sep float compassBearing concode_elem_sep float FILTER_ALPHA concode_elem_sep Object lock concode_elem_sep GPSTracker locationTracker concode_field_sep Location getLocation concode_elem_sep void onSensorChanged concode_elem_sep void onPause concode_elem_sep Intent getBatteryMonitor concode_elem_sep float getBatteryLevelPercent concode_elem_sep void registerListeners concode_elem_sep int getSatelliteCount concode_elem_sep void onAccuracyChanged concode_elem_sep float[] lowPassFilter concode_elem_sep void onDestroy concode_elem_sep int getBatteryStatus concode_elem_sep double getLongitude concode_elem_sep void recalculateAccelerometer concode_elem_sep double getAltitude concode_elem_sep double getLatitude concode_elem_sep float getCompassBearing concode_elem_sep double getBearing concode_elem_sep void clearGPSCache concode_elem_sep void onResume concode_elem_sep void initSensor concode_elem_sep float getYaw concode_elem_sep boolean isBatteryCharging concode_elem_sep float getPitch concode_elem_sep void initLocationTracker concode_elem_sep int getBatteryLevel concode_elem_sep List<GpsSatellite> getSatellites concode_elem_sep double getSpeed concode_elem_sep SensorManagerFactory getInstance concode_elem_sep SensorManagerFactory getInstance concode_elem_sep void recalculateMagnetometer
target: float function ( ) { return roll ; }