android蓝牙串口编程官方指导（非常详细,PDF)

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Android's bluetooth APIs allow your application

to perform wireless data transactions with

other devices

In this document

The Basics

Bluetooth Permissions

Setting Up Bluetooth

Finding Devices

Bluetooth Chat

through the Android Bluetooth APIs. These APIs let

applications wirelessly connect to other Bluetooth devices,

enabling point-to-point and multipoint wireless features.

Using the Bluetooth APIs, an Android application can

perform the following:

Scan for other Bluetooth devices

Query the local Bluetooth adapter for paired Bluetooth

devices

Establish RFCOMM channels

Connect to other devices through service discovery

devices that are either paired or available in the local area,

connecting devices, and transferring data between devices.

All of the Bluetooth APIs are available in the

interfaces you will need to create Bluetooth connections:

Represents the local Bluetooth adapter (Bluetooth radio). The

interaction. Using this, you can discover other Bluetooth devices, query a list of bonded (paired) devices, instantiate

a

Represents the interface for a Bluetooth socket (similar to a TCP

an application to exchange data with another Bluetooth device via InputStream and OutputStream.

Represents an open server socket that listens for incoming requests (similar to a TCP

connect two Android devices, one device must open a server socket with this class. When a remote Bluetooth

device makes a connection request to the this device, the

that define the device's major and minor device classes and its services. However, this does not reliably describe

all Bluetooth profiles and services supported by the device, but is useful as a hint to the device type.

profiles, see

Provides support for Bluetooth headsets to be used with mobile phones. This includes both Bluetooth Headset and

Hands-Free (v1.5) profiles.

the callback methods to receive updates about changes in the application’s registration state and Bluetooth channel

state.

Represents an application configuration that the Bluetooth Health third-party application registers to communicate

with a remote Bluetooth health device.

An interface that notifies

connection, accepting a connection, and transferring data.

You must request the

Most applications need this permission solely for the ability to discover local Bluetooth devices. The other abilities

granted by this permission should not be used, unless the application is a "power manager" that will modify Bluetooth

permission.

Declare the Bluetooth permission(s) in your application manifest file. For example:

dialog.

Before your application can communicate over Bluetooth, you need to verify

that Bluetooth is supported on the device, and if so, ensure that it is enabled.

features. If Bluetooth is supported, but disabled, then you can request that the

user enable Bluetooth without leaving your application. This setup is

accomplished in two steps, using the

adapter (the Bluetooth radio). There's one Bluetooth adapter for the entire

system, and your application can interact with it using this object. If

BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

if (mBluetoothAdapter == null) {