SensorManager

SensorManager lets you access the device's sensors. Get an instance of this class by calling getSystemService() with the argument SENSOR_SERVICE.

private SensorManager mSensorManager;
...
mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);

Identifying Sensors

SensorManager provides two methods to access Sensor objects:

• getSensorList(): returns all the sensors.
• getDefaultSensor(): returns the default sensor for the specified type.

Example:

List<Sensor> deviceSensors = mSensorManager.getSensorList(Sensor.TYPE_ALL);

Example:

if (mSensorManager.getDefaultSensor(Sensor.TYPE_PRESSURE) != null) {
  // Success! There's a pressure sensor.
}
else {
  // Failure! No pressure sensor.
}

Source code: SensorManager.java