Understanding the sensor framework callbacks

The two most important callbacks of the sensor framework are the onSensorChanged() and onAccuracyChanged() methods. In order to write efficient sensor code, it's important to understand when these methods are called, and what processing we can do in them. These callbacks are methods of the SensorEventListnener interface, which needs to be implemented in the class where the callbacks are to be received:

onSensorChanged() is the first callback and has the following syntax:

@Override 
  public void onSensorChanged(SensorEvent event) { 
   } 

Depending on the type of reporting mode of the sensor, this method will be called, either at regular frequency (Continuous mode) or whenever there is a change in the value of the sensors from the previously reported value (On the change mode). The onSensorChanged() method provides the sensor values inside the float value[] array of the SensorEvent object. These sensor values are different from the...