What is the purpose of Android Bluetooth package?

Android platform includes support for the Bluetooth framework that allows a device to wirelessly exchange data with other Bluetooth devices . Android provides Bluetooth API to perform these different operations. Android provides BluetoothAdapter class to communicate with Bluetooth.

To clear your cache:

A list of paired devices can be obtained by invoking the getBondedDevices() method, which returns a set of BluetoothDevice objects. We invoke the getBondedDevices() method in the DeviceListFragment ‘s onCreate() method.

Android Bluetooth Helper Library allows you to access the Bluetooth of your mobile device, manage turn-on/off, and discover bluetooth devices around you .