BluetoothAdapter ；BluetoothDevice；BluetoothSocket;BluetoothServerSocket;UUID和String转换；

    1.BluetoothAdapter 顾名思义，蓝牙适配器，直到我们建立bluetoothSocket连接之前，都要不断操作它

      BluetoothAdapter里的方法很多，常用的有以下几个：

 

boolean        //取消可见cancelDiscovery()                

Cancel the current device discovery process.

 boolean        //判断蓝牙地址是否有效checkBluetoothAddress(String address)                

Validate a String Bluetooth address, such as "00:43:A8:23:10:F0" 

Alphabetic characters must be uppercase to be valid.

 void        closeProfileProxy(int profile, BluetoothProfile proxy)                

Close the connection of the profile proxy to the Service.

 boolean        //关闭蓝牙disable()                

Turn off the local Bluetooth adapter—do not use without explicit user action to turn off Bluetooth.

 boolean       //打开蓝牙 enable()                

Turn on the local Bluetooth adapter—do not use without explicit user action to turn on Bluetooth.

String        //得到本地蓝牙地址getAddress()                

Returns the hardware address of the local Bluetooth adapter.

Set<BluetoothDevice>

 //得到已经配对蓝牙   

getBondedDevices()                

Return the set of BluetoothDevice objects that are bonded (paired) to the local adapter.

 synchronized  static BluetoothAdapter 

//获取默认BluetoothAdapter，实际上，也只有这一种方法获取BluetoothAdapter  

getDefaultAdapter()                

Get a handle to the default local Bluetooth adapter.

String        //得到本地蓝牙namegetName()                

Get the friendly Bluetooth name of the local Bluetooth adapter.

 int        //得到当前连接的状态getProfileConnectionState(int profile)                

Get the current connection state of a profile.

boolean        getProfileProxy(Context context, BluetoothProfile.ServiceListener listener, int profile)                

Get the profile proxy object associated with the profile.

BluetoothDevice//通过address得devicegetRemoteDevice(String address)                

Get a BluetoothDevice object for the given Bluetooth hardware address.

BluetoothDevice        getRemoteDevice(byte[] address)                

Get a BluetoothDevice object for the given Bluetooth hardware address.

 int        getScanMode()                

Get the current Bluetooth scan mode of the local Bluetooth adapter.

int        //得到当前蓝牙适配器的状态getState()                

Get the current state of the local Bluetooth adapter.

 boolean       //是否正在查找 isDiscovering()                

Return true if the local Bluetooth adapter is currently in the device discovery process.

boolean        //当前是否可用isEnabled()                

Return true if Bluetooth is currently enabled and ready for use.

BluetoothServerSocket

 //通过bluetoothAdapter创建bluetoothsocket （不安全）      

listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid)                

Create a listening, insecure RFCOMM Bluetooth socket with Service Record.

BluetoothServerSocket        

 //通过bluetoothAdapter创建bluetoothsocket （不安全） 

listenUsingRfcommWithServiceRecord(String name, UUID uuid)                

Create a listening, secure RFCOMM Bluetooth socket with Service Record.

boolean        //设置本地蓝牙的namesetName(String name)                

Set the friendly Bluetooth name of the local Bluetooth adapter.

 boolean        startDiscovery()                

Start the remote device discovery process.

 

     listenUsingRfcommWithServiceRecord(String name,UUID uuid)根据名称，UUID创建并返回BluetoothServerSocket，这是创建BluetoothSocket服务器端的第一步

      startDiscovery()开始搜索，这是搜索的第一步

    2.BluetoothDevice看名字就知道，这个类描述了一个蓝牙设备

 

BluetoothSocket

 //通过根据UUID创建并返回一个BluetoothSocket

createInsecureRfcommSocketToServiceRecord(UUID uuid)                

Create an RFCOMM BluetoothSocket socket ready to start an insecure outgoing connection to this remote device using SDP lookup of uuid.

BluetoothSocket        createRfcommSocketToServiceRecord(UUID uuid)                

Create an RFCOMM BluetoothSocket ready to start a secure outgoing connection to this remote device using SDP lookup of uuid.

 int        describeContents()                

Describe the kinds of special objects contained in this Parcelable's marshalled representation.

  boolean        equals(Object o)                

Compares this instance with the specified object and indicates if they are equal.

  boolean                                                                     fetchUuidsWithSdp()                

Perform a service discovery on the remote device to get the UUIDs supported.

String       //得到远程设备的地址 getAddress()                

Returns the hardware address of this BluetoothDevice.

BluetoothClass        getBluetoothClass()                

Get the Bluetooth class of the remote device.

 int         //得到远程设备的状态getBondState()                

Get the bond state of the remote device.

String     得到远程设备的name   getName()                

Get the friendly Bluetooth name of the remote device.

ParcelUuid[]         得到远程设备的uuidsgetUuids()                

Returns the supported features (UUIDs) of the remote device.

 int        hashCode()                

Returns an integer hash code for this object.

String        toString()                

Returns a string representation of this BluetoothDevice.

 void        writeToParcel(Parcel out, int flags)                

Flatten this object in to a Parcel.

       这个方法也是我们获取BluetoothDevice的目的——创建BluetoothSocket

       这个类其他的方法，如getAddress(),getName(),同BluetoothAdapter

    3.BluetoothServerSocket如果去除了Bluetooth相信大家一定再熟悉不过了，既然是Socket，方法就应该都差不多

 

BluetoothSocket        accept(int timeout)                

Block until a connection is established, with timeout.

BluetoothSocket        accept()                

Block until a connection is established.

 void        close()                

Immediately close this socket, and release all associated resources.

两个重载的accept(),accept(inttimeout)两者的区别在于后面的方法指定了过时时间，需要注意的是，执行这两个方法的时候，直到接收到了客户端的请求（或是过期之后），都会阻塞线程，应该放在新线程里运行！

4.BluetoothSocket

 

void        close()                

Closes the object and release any system resources it holds.

 void        connect()                

Attempt to connect to a remote device.

InputStream        getInputStream()                

Get the input stream associated with this socket.

OutputStream        getOutputStream()                

Get the output stream associated with this socket.

BluetoothDevice        getRemoteDevice()                

Get the remote device this socket is connecting, or connected, to.

 boolean        isConnected()                

Get the connection status of this socket, ie, whether there is an active connection with remote device.

 5.UUID和String之间的转化：

uuid->String:

String s = UUID.randomUUID().toString();

String->uuid:

UUID.fromString(name)