Using the Bluetooth API, you can:
* Search for Bluetooth devices
* Query paired devices from the local Bluetooth adapter
* Establish an RFCOMM channel
* Connect to other devices through service discovery
* Transfer data between devices
* Connect to other devices through service discovery
* Transfer data between devices
* Transfer data between devices
* Managing multiple connections
Basics
This document describes how to use Android's Bluetooth API to accomplish the four main tasks necessary to communicate with devices using Bluetooth, which consists of four main parts: Bluetooth setup, searching for devices (paired or visible), connecting, and transferring data.
All the Bluetooth APIs are in the android.bluetooth package. The following classes and interfaces are mainly needed to realize these functions:
BluetoothAdapter
Represents the local bluetooth adapter (bluetooth transmitter), which is the entry point for all bluetooth interactions. It allows you to search for other Bluetooth devices, query the list of paired devices, create a BluetoothDevice with a known MAC address, and create a BluetoothServerSocket to listen for communication from other devices.
BluetoothDevice
Represents a remote Bluetooth device, which can be used to request a connection from a remote Bluetooth device or to get the name, address, type, and bonding status of a remote Bluetooth device. (The information is encapsulated in a bluetoothsocket).
BluetoothSocket
Represents an interface to a Bluetooth socket (similar to a socket in tcp), which is the connection point for an application to communicate with other Bluetooth devices via input and output streams.
BluetoothServerSocket
represents the opening of a service connection to listen for possible connection requests (belongs to the server side), in order to connect two Bluetooth devices there must be a device as a server to open a service socket. The Blueboothserversocket class returns a bluetoothsocket when the remote device initiates a connection request and a connection is made.
BluetoothClass
Describes a device's profile, or roughly what services can be provided by Bluetooth on that device. which services (services) can be provided, but is not trustworthy. For example, the device is a phone, computer, or handheld device; the device can provide audio/telephony services, and so on. It can be used for some UI hints.
BluetoothProfile
BluetoothHeadset
Provides support for the use of Bluetooth headsets with cell phones. This includes both Bluetooth headset and hands-free (v1.5) modes.
BluetoothA2dp
Defines high-quality audio that can be transferred from one device to another over a Bluetooth connection. "A2DP's" stands for Advanced Audio Distribution Mode.
BluetoothHealth
Represents the Bluetooth service controlled by the Medical Device Configuration Agent
BluetoothHealthCallback
An abstract class used to implement the BluetoothHealth callback. You must extend this class and implement callback methods to receive updates on the registration status of the application and changes to the Bluetooth channel status.