Delphi XE7的蓝牙 Bluetooth

Delphi XE7已经内建了蓝牙功能，提供了System.Bluetooth.pas单元

顾名思义，System表示XE7的蓝牙功能可以在Windows，Android，IOS系统内使用

System.Bluetooth单元中主要包含一下几个类,其中带LE的支持所有系统，不带LE的类不支持Ios系统，带与不带LE功能是一样的。

TBluetoothManager
TBluetoothDeviceList
TBluetoothAdapter
TBluetoothDevice
TBluetoothService
TBluetoothServiceList
TBluetoothSocket

TBluetoothLEManager
TBluetoothLEDeviceList
TBluetoothLEAdapter
TBluetoothLEDevice
TBluetoothLEService
TBluetoothLEServiceList
TBluetoothLESocket

其中：

TBluetoothManager是蓝牙管理器，用于蓝牙设备管理，包括发现蓝牙设备，获取配对设备，处理远程配对请求等功能

TBluetoothDeviceList是蓝牙设备列表，TBluetoothDeviceList = class(TObjectList<TBluetoothDevice>),可以通过TBluetoothManager.GetPairedDevices获得配对设备列表

TBluetoothAdapter本机蓝牙设备，实现配对、取消配对等功能，可通过TBluetoothManager.CurrentAdapter得到当前蓝牙设备

TBluetoothDevice远端蓝牙设备，每个远端设备可以提供若干个服务（TBluetoothService），

TBluetoothService远端蓝牙设备服务，包括服务名和UUID

  TBluetoothService = record

    Name: string;

    UUID: TBluetoothUUID;

  end;

TBluetoothServiceList服务列表 = class(TList<TBluetoothService>);可通过TBluetoothDevice.GetServices获得远端设备服务列表

TBluetoothSocket蓝牙通讯套接字,通过 TBluetoothDevice.CreateClientSocket(StringToGUID(ServiceGUI), True/False)创建，

下面是一个XE7自带的例子，记得在Android下把相关权限添加到工程设置中。

unit Unit1;

interface

uses

  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,

  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs, System.Bluetooth,

  FMX.Layouts, FMX.ListBox, FMX.StdCtrls, FMX.Memo, FMX.Controls.Presentation,

  FMX.Edit, FMX.TabControl;

type

  TServerConnectionTH = class(TThread)

  private

    { Private declarations }

    FServerSocket: TBluetoothServerSocket;

    FSocket: TBluetoothSocket;

    FData: TBytes;

  protected

    procedure Execute; override;

  public

    { Public declarations }

    constructor Create(ACreateSuspended: Boolean);

    destructor Destroy; override;

  end;

  TForm1 = class(TForm)

    ButtonDiscover: TButton;

    ButtonPair: TButton;

    ButtonUnPair: TButton;

    ButtonPairedDevices: TButton;

    DisplayR: TMemo;

    Edit1: TEdit;

    Button2: TButton;

    FreeSocket: TButton;

    Labeldiscoverable: TLabel;

    ComboBoxDevices: TComboBox;

    ComboBoxPaired: TComboBox;

    Panel1: TPanel;

    TabControl1: TTabControl;

    TabItem1: TTabItem;

    TabItem2: TTabItem;

    LabelNameSarver: TLabel;

    ButtonServices: TButton;

    ComboBoxServices: TComboBox;

    PanelClient: TPanel;

    LabelClient: TLabel;

    ButtonConnectToRFCOMM: TButton;

    PanelServer: TPanel;

    ButtonCloseReadingSocket: TButton;

    ButtonOpenReadingSocket: TButton;

    LabelServer: TLabel;

    procedure ButtonDiscoverClick(Sender: TObject);

    procedure ButtonPairClick(Sender: TObject);

    procedure ButtonUnPairClick(Sender: TObject);

    procedure ButtonPairedDeviceClick(Sender: TObject);

    procedure FormShow(Sender: TObject);

    procedure ButtonOpenReadingSocketClick(Sender: TObject);

    procedure ButtonConnectToRFCOMMClick(Sender: TObject);

    procedure ButtonCloseReadingSocketClick(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure FormClose(Sender: TObject; var Action: TCloseAction);

    procedure FreeSocketClick(Sender: TObject);

    function ManagerConnected:Boolean;

    function GetServiceName(GUID: string): string;

    procedure ComboBoxPairedChange(Sender: TObject);

    procedure ButtonServicesClick(Sender: TObject);

  private

    { Private declarations }

    FBluetoothManager: TBluetoothManager;

    FDiscoverDevices: TBluetoothDeviceList;

    FPairedDevices: TBluetoothDeviceList;

    FAdapter: TBluetoothAdapter;

    FData: TBytes;

    FSocket: TBluetoothSocket;

    ItemIndex: Integer;

    ServerConnectionTH: TServerConnectionTH;

    procedure DevicesDiscoveryEnd(const Sender: TObject; const ADevices: TBluetoothDeviceList);

    procedure PairedDevices;

    procedure SendData;

  public

    { Public declarations }

  end;

Const

  ServiceName = 'Basic Text Server';

  ServiceGUI = '{B62C4E8D-62CC-404B-BBBF-BF3E3BBB1378}';

var

  Form1: TForm1;

implementation

{$R *.fmx}

{$R *.NmXhdpiPh.fmx ANDROID}

{$R *.LgXhdpiPh.fmx ANDROID}

{$R *.SmXhdpiPh.fmx ANDROID}

{$R *.Macintosh.fmx MACOS}

{$R *.iPhone4in.fmx IOS}

{$R *.Windows.fmx MSWINDOWS}

procedure TForm1.ButtonPairClick(Sender: TObject);

begin

  if ManagerConnected then

    if ComboboxDevices.ItemIndex > - then

      FAdapter.Pair(FDiscoverDevices[ComboboxDevices.ItemIndex])

    else

      ShowMessage('No device selected');

end;

procedure TForm1.ButtonUnPairClick(Sender: TObject);

begin

  if ManagerConnected then

    if ComboboxPaired.ItemIndex > - then

      FAdapter.UnPair(FPairedDevices[ComboboxPaired.ItemIndex])

    else

      ShowMessage('No Paired device selected');

end;

procedure TForm1.ComboBoxPairedChange(Sender: TObject);

begin

  LabelNameSarver.Text := ComboBoxPaired.Items[ComboBoxPaired.ItemIndex];

end;

procedure TForm1.PairedDevices;

var

  I: Integer;

begin

  ComboboxPaired.Clear;

  if ManagerConnected then

  begin

  FPairedDevices := FBluetoothManager.GetPairedDevices;

  if FPairedDevices.Count >  then

    for I:=  to FPairedDevices.Count -  do

      ComboboxPaired.Items.Add(FPairedDevices[I].DeviceName)

  else

    ComboboxPaired.Items.Add('No Paired Devices');

  end;

end;

procedure TForm1.ButtonPairedDeviceClick(Sender: TObject);

begin

  PairedDevices;

  ComboboxPaired.DropDown;

end;

procedure TForm1.ButtonServicesClick(Sender: TObject);

var

  LServices: TBluetoothServiceList;

  LDevice: TBluetoothDevice;

  I: Integer;

begin

  ComboBoxServices.Clear;

  if ManagerConnected then

    if ComboboxPaired.ItemIndex > - then

    begin

      LDevice := FPairedDevices[ComboboxPaired.ItemIndex] as TBluetoothDevice;

      LServices := LDevice.GetServices;

      for I :=  to LServices.Count -  do

        ComboBoxServices.Items.Add(LServices[I].Name + ' --> ' + GUIDToString(LServices[I].UUID));

      ComboBoxServices.ItemIndex := ;

      ComboBoxServices.DropDown;

    end

    else

      ShowMessage('No paired device selected');

end;

procedure TForm1.FreeSocketClick(Sender: TObject);

begin

  FreeAndNil(FSocket);

  DisplayR.Lines.Add('Client socket set free');

  DisplayR.GoToLineEnd;

end;

procedure TForm1.Button2Click(Sender: TObject);

begin

  DisplayR.ReadOnly := False;

  DisplayR.SelectAll;

  DisplayR.DeleteSelection;

  DisplayR.ReadOnly := True;

end;

function TForm1.GetServiceName(GUID: string): string;

var

  LServices: TBluetoothServiceList;

  LDevice: TBluetoothDevice;

  I: Integer;

begin

  LDevice := FPairedDevices[ComboboxPaired.ItemIndex] as TBluetoothDevice;

  LServices := LDevice.GetServices;

  for I :=  to LServices.Count -  do

  begin

    if StringToGUID(GUID) = LServices[I].UUID then

    begin

      Result := LServices[I].Name;

      break;

    end;

  end;

end;

procedure TForm1.ButtonConnectToRFCOMMClick(Sender: TObject);

begin

  if ManagerConnected then

    try

      SendData;

    except

      on E : Exception do

      begin

        DisplayR.Lines.Add(E.Message);

        DisplayR.GoToTextEnd;

        FreeAndNil(FSocket);

      end;

    end;

end;

function TForm1.ManagerConnected:Boolean;

begin

  if FBluetoothManager.ConnectionState = TBluetoothConnectionState.Connected then

  begin

    Labeldiscoverable.Text := 'Device discoverable as "'+FBluetoothManager.CurrentAdapter.AdapterName+'"';

    Result := True;

  end

  else

  begin

    Result := False;

    DisplayR.Lines.Add('No Bluetooth device Found');

    DisplayR.GoToTextEnd;

  end

end;

procedure TForm1.SendData;

var

  ToSend: TBytes;

  LDevice: TBluetoothDevice;

begin

  if (FSocket = nil) or (ItemIndex <> ComboboxPaired.ItemIndex) then

  begin

    if ComboboxPaired.ItemIndex > - then

    begin

      LDevice := FPairedDevices[ComboboxPaired.ItemIndex] as TBluetoothDevice;

      DisplayR.Lines.Add(GetServiceName(ServiceGUI));

      DisplayR.GoToTextEnd;

      FSocket := LDevice.CreateClientSocket(StringToGUID(ServiceGUI), False);

      if FSocket <> nil then

      begin

        ItemIndex := ComboboxPaired.ItemIndex;

        FSocket.Connect;

        ToSend := TEncoding.UTF8.GetBytes(Edit1.Text);

        FSocket.SendData(ToSend);

        DisplayR.Lines.Add('Text Sent');

        DisplayR.GoToTextEnd;

      end

      else

        ShowMessage('Out of time -15s-');

    end

    else

      ShowMessage('No paired device selected');

  end

  else

  begin

    ToSend := TEncoding.UTF8.GetBytes(Edit1.Text);

    FSocket.SendData(ToSend);

    DisplayR.Lines.Add('Text Sent');

    DisplayR.GoToTextEnd;

  end;

end;

procedure TForm1.ButtonDiscoverClick(Sender: TObject);

begin

  ComboboxDevices.Clear;

  if ManagerConnected then

  begin

    FAdapter := FBluetoothManager.CurrentAdapter;

    FBluetoothManager.StartDiscovery();

    FBluetoothManager.OnDiscoveryEnd := DevicesDiscoveryEnd;

  end;

end;

procedure TForm1.DevicesDiscoveryEnd(const Sender: TObject; const ADevices: TBluetoothDeviceList);

var

  I: Integer;

begin

  FDiscoverDevices := ADevices;

  for I :=  to ADevices.Count -  do

    ComboboxDevices.Items.Add(ADevices[I].DeviceName + '  -> ' + ADevices[I].Address);

  ComboboxDevices.ItemIndex := ;

end;

procedure TForm1.ButtonOpenReadingSocketClick(Sender: TObject);

begin

  if (ServerConnectionTH = nil) and ManagerConnected then

  begin

    try

      FAdapter := FBluetoothManager.CurrentAdapter;

      ServerConnectionTH := TServerConnectionTH.Create(True);

      ServerConnectionTH.FServerSocket := FAdapter.CreateServerSocket(ServiceName, StringToGUID(ServiceGUI), False);

      ServerConnectionTH.Start;

      DisplayR.Lines.Add(' - Service created: "'+ServiceName+'"');

      DisplayR.GoToTextEnd;

    except

      on E : Exception do

      begin

        DisplayR.Lines.Add(E.Message);

        DisplayR.GoToTextEnd;

      end;

    end;

  end;

end;

procedure TForm1.ButtonCloseReadingSocketClick(Sender: TObject);

begin

  if ServerConnectionTH <> nil then

  begin

    ServerConnectionTH.Terminate;

    ServerConnectionTH.WaitFor;

    FreeAndNil(ServerConnectionTH);

    DisplayR.Lines.Add(' - Service removed -');

    DisplayR.GoToTextEnd;

  end

end;

procedure TForm1.FormShow(Sender: TObject);

begin

  try

    LabelServer.Text := ServiceName;

    LabelClient.Text := 'Client of '+ServiceName;

    FBluetoothManager := TBluetoothManager.Current;

    FAdapter := FBluetoothManager.CurrentAdapter;

    if ManagerConnected then

    begin

      PairedDevices;

      ComboboxPaired.ItemIndex := ;

    end;

  except

    on E : Exception do

    begin

      ShowMessage(E.Message);

    end;

  end;

end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);

begin

  if ServerConnectionTH <> nil then

  begin

    ServerConnectionTH.Terminate;

    ServerConnectionTH.WaitFor;

    FreeAndNil(ServerConnectionTH);

  end

end;

{TServerConnection}

constructor TServerConnectionTH.Create(ACreateSuspended: Boolean);

begin

  inherited;

end;

destructor TServerConnectionTH.Destroy;

begin

  FSocket.Free;

  FServerSocket.Free;

  inherited;

end;

procedure TServerConnectionTH.execute;

var

  ASocket: TBluetoothSocket;

  Msg: string;

begin

  while not Terminated do

    try

      ASocket := nil;

      while not Terminated and (ASocket = nil) do

        ASocket := FServerSocket.Accept();

      if(ASocket <> nil) then

      begin

        FSocket := ASocket;

        while not Terminated do

        begin

          FData := ASocket.ReadData;

          if length(FData) >  then

            Synchronize(procedure

              begin

                Form1.DisplayR.Lines.Add(TEncoding.UTF8.GetString(FData));

                Form1.DisplayR.GoToTextEnd;

              end);

          sleep();

        end;

      end;

    except

      on E : Exception do

      begin

        Msg := E.Message;

        Synchronize(procedure

          begin

            Form1.DisplayR.Lines.Add('Server Socket closed: ' + Msg);

            Form1.DisplayR.GoToTextEnd;

          end);

      end;

    end;

end;

end.

窗体文件

object Form1: TForm1

  Left =

  Top =

  Caption = 'Basic Classic Bluetooth Demo'

  ClientHeight =

  ClientWidth =

  FormFactor.Width =

  FormFactor.Height =

  FormFactor.Devices = [Desktop]

  OnClose = FormClose

  OnShow = FormShow

  DesignerMasterStyle =

  object Panel1: TPanel

    Align = Client

    Size.Width = 360.000000000000000000

    Size.Height = 570.000000000000000000

    Size.PlatformDefault = False

    TabOrder =

    object TabControl1: TTabControl

      Align = Client

      FullSize = True

      Size.Width = 360.000000000000000000

      Size.Height = 570.000000000000000000

      Size.PlatformDefault = False

      TabHeight = 49.000000000000000000

      TabIndex =

      TabOrder =

      TabPosition = Bottom

      object TabItem1: TTabItem

        CustomIcon = <

          item

          end>

        IsSelected = True

        Size.Width = 180.000000000000000000

        Size.Height = 49.000000000000000000

        Size.PlatformDefault = False

        TabOrder =

        Text = 'Bluetooth settings'

        object ButtonDiscover: TButton

          Position.X = 4.000000000000000000

          Position.Y = 59.000000000000000000

          Size.Width = 158.000000000000000000

          Size.Height = 31.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

          Text = 'Discover devices'

          OnClick = ButtonDiscoverClick

        end

        object ButtonPair: TButton

          Position.X = 191.000000000000000000

          Position.Y = 59.000000000000000000

          Size.Width = 78.000000000000000000

          Size.Height = 31.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

          Text = 'Pair'

          OnClick = ButtonPairClick

        end

        object ButtonPairedDevices: TButton

          Position.X = 4.000000000000000000

          Position.Y = 140.000000000000000000

          Size.Width = 158.000000000000000000

          Size.Height = 31.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

          Text = 'Paired Devices'

          OnClick = ButtonPairedDeviceClick

        end

        object ButtonUnPair: TButton

          Position.X = 277.000000000000000000

          Position.Y = 67.000000000000000000

          Size.Width = 80.000000000000000000

          Size.Height = 22.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

          Text = 'UnPair'

          OnClick = ButtonUnPairClick

        end

        object ComboBoxDevices: TComboBox

          Position.X = 4.000000000000000000

          Position.Y = 92.000000000000000000

          Size.Width = 352.000000000000000000

          Size.Height = 32.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

        end

        object ComboBoxPaired: TComboBox

          Position.X = 4.000000000000000000

          Position.Y = 173.000000000000000000

          Size.Width = 352.000000000000000000

          Size.Height = 32.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

          OnChange = ComboBoxPairedChange

        end

        object ButtonServices: TButton

          Position.X = 4.000000000000000000

          Position.Y = 221.000000000000000000

          Size.Width = 158.000000000000000000

          Size.Height = 31.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

          Text = 'Services'

          OnClick = ButtonServicesClick

        end

        object ComboBoxServices: TComboBox

          Position.X = 4.000000000000000000

          Position.Y = 254.000000000000000000

          Size.Width = 352.000000000000000000

          Size.Height = 32.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

        end

      end

      object TabItem2: TTabItem

        CustomIcon = <

          item

          end>

        IsSelected = False

        Size.Width = 180.000000000000000000

        Size.Height = 49.000000000000000000

        Size.PlatformDefault = False

        TabOrder =

        Text = 'Service demo'

        object PanelClient: TPanel

          Position.Y = 134.000000000000000000

          Size.Width = 360.000000000000000000

          Size.Height = 153.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

          object Button2: TButton

            Position.X = 4.000000000000000000

            Position.Y = 115.000000000000000000

            Size.Width = 73.000000000000000000

            Size.Height = 25.000000000000000000

            Size.PlatformDefault = False

            TabOrder =

            Text = 'Clear'

            OnClick = Button2Click

          end

          object Edit1: TEdit

            Touch.InteractiveGestures = [LongTap, DoubleTap]

            TabOrder =

            Text = 'I am the text sent'

            Position.X = 4.000000000000000000

            Position.Y = 71.000000000000000000

            Size.Width = 343.000000000000000000

            Size.Height = 32.000000000000000000

            Size.PlatformDefault = False

          end

          object FreeSocket: TButton

            Position.X = 190.000000000000000000

            Position.Y = 115.000000000000000000

            Size.Width = 157.000000000000000000

            Size.Height = 25.000000000000000000

            Size.PlatformDefault = False

            TabOrder =

            Text = 'Free Client Socket'

            OnClick = FreeSocketClick

          end

          object LabelNameSarver: TLabel

            Position.X = 157.000000000000000000

            Position.Y = 22.000000000000000000

            Size.Width = 180.000000000000000000

            Size.Height = 40.000000000000000000

            Size.PlatformDefault = False

          end

          object LabelClient: TLabel

            StyledSettings = [Family, Size, FontColor]

            Position.X = 4.000000000000000000

            Size.Width = 227.000000000000000000

            Size.Height = 20.000000000000000000

            Size.PlatformDefault = False

            Text = 'Client'

          end

          object ButtonConnectToRFCOMM: TButton

            Position.X = 4.000000000000000000

            Position.Y = 28.000000000000000000

            Size.Width = 143.000000000000000000

            Size.Height = 33.000000000000000000

            Size.PlatformDefault = False

            TabOrder =

            Text = 'Send text to ->'

            OnClick = ButtonConnectToRFCOMMClick

          end

        end

        object PanelServer: TPanel

          Position.Y = 40.000000000000000000

          Size.Width = 360.000000000000000000

          Size.Height = 93.000000000000000000

          Size.PlatformDefault = False

          TabOrder =

          object ButtonCloseReadingSocket: TButton

            Position.X = 195.000000000000000000

            Position.Y = 32.000000000000000000

            Size.Width = 160.000000000000000000

            Size.Height = 36.000000000000000000

            Size.PlatformDefault = False

            TabOrder =

            Text = 'Remove text service'

            OnClick = ButtonCloseReadingSocketClick

          end

          object ButtonOpenReadingSocket: TButton

            Position.X = 4.000000000000000000

            Position.Y = 32.000000000000000000

            Size.Width = 160.000000000000000000

            Size.Height = 36.000000000000000000

            Size.PlatformDefault = False

            TabOrder =

            Text = 'Create text service'

            OnClick = ButtonOpenReadingSocketClick

          end

          object LabelServer: TLabel

            StyledSettings = [Family, Size, FontColor]

            Position.X = 4.000000000000000000

            Size.Width = 227.000000000000000000

            Size.Height = 20.000000000000000000

            Size.PlatformDefault = False

            Text = 'Server'

          end

        end

      end

    end

    object Labeldiscoverable: TLabel

      StyledSettings = [Family, Style, FontColor]

      Position.X = 16.000000000000000000

      Position.Y = 8.000000000000000000

      Size.Width = 321.000000000000000000

      Size.Height = 23.000000000000000000

      Size.PlatformDefault = False

    end

    object DisplayR: TMemo

      Touch.InteractiveGestures = [Pan, LongTap, DoubleTap]

      Anchors = [akLeft, akTop, akRight]

      Position.Y = 288.000000000000000000

      Size.Width = 360.000000000000000000

      Size.Height = 232.000000000000000000

      Size.PlatformDefault = False

      TabOrder =

      TabStop = False

      ReadOnly = True

      ShowSizeGrip = True

    end

  end

end

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