Android实例-Delphi开发蓝牙官方实例解析(XE10+小米2+小米5)

相关资料：
1.http://blog.csdn.net/laorenshen/article/details/41149803
2.http://www.cnblogs.com/findumars/p/5149128.html

一、理清概念
1.蓝牙设备：是指代有蓝牙通信的手机、电脑、平板、打印机、耳机等。
2.设备名称：是指设备打开蓝牙功能后，在其他设备中显示的名字，如图1用的A、B、C等。
3.蓝牙关态：如果A手机没有打开蓝牙功能，A手机是不能使用搜索的。就算A打开蓝牙，其他的设备没打开，A也是搜索不到的，如E。
4.服务名称：每一个设备上打开蓝牙时，都会提供不同的服务，服务的名称是在其他设备上显示的。
5.服务是从哪里来的？其实打开蓝牙功能，只是设备开启此功能，但没有实际的应用功能。必须由某个程序或应用建立相关的服务，其他设备才能与此设备通信。

二、Delphi中提供了什么？
1.蓝牙相关功能在System.Bluetooth.pas单元。
2.Bluetooth.pas提供的对像
TBluetoothManager：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。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
TBluetoothDevice：远端蓝牙设备，每个远端设备可以提供若干个服务
TBluetoothService：远端蓝牙设备服务，包括服务名和UUID
TBluetoothServiceList：服务列表。可通过TBluetoothDevice.GetServices获得远端设备服务列表
TBluetoothSocket：蓝牙通讯套接字。

三、实例解析

小米手机2
1.打开蓝牙
2.点击“发现设备”,过一会就会在下面的列表中显示出所有搜索到的蓝牙设备。
3.在出现的蓝牙设备列表中，选一个。比如“小米手机5”。
4.点击“配对”，这时小米手机5会收到配对信息。
5.这时配对设备列表中就会出现小米手机5，选中它。
6.点击“服务”，出现N个服务，但这时你不知道怎么与小米手机5通信。对的还少个服务。
7.操作小米手机5中的第三步。
8.在服务列表中选中最下方的（晕，不知道为什么名字是个空串）。
9.进入服务演示页面。
10.点“发送短信给”不好意思，我不小心点了二下，所以小米手机5收到二次。
11.这时小米手机5就收到了信息。

小米手机5
1.打开蓝牙
2.接受小米手机2的配对请求。
3.点击“创建文本服务”

PS:
1.同一个程序里包括了发送信息，与接收信息。所以程序可以在二个手机上测试。
2.现在只能小米手机2给小米手机5发信息，为什么呢？因为小米手机2没有建服务呀。
3.如果小米手机5的程序退出，你会发现小米手机2上查看服务，刚才小米手机5建立的服务不见了。
4.图片本来很清楚，但为了文章的大小，就成了现在的惨不忍睹了。望大家见谅。

Delphi官方实例源码：

  1 unit Unit1;
  2 
  3 interface
  4 
  5 uses
  6   System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  7   FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs, System.Bluetooth,
  8   FMX.Layouts, FMX.ListBox, FMX.StdCtrls, FMX.Memo, FMX.Controls.Presentation,
  9   FMX.Edit, FMX.TabControl, FMX.ScrollBox;
 10 
 11 type
 12   //读取数据线程
 13   TServerConnectionTH = class(TThread)
 14   private
 15     { Private declarations }
 16     FServerSocket: TBluetoothServerSocket;
 17     FSocket: TBluetoothSocket;
 18     FData: TBytes;
 19   protected
 20     procedure Execute; override;
 21   public
 22     { Public declarations }
 23     constructor Create(ACreateSuspended: Boolean);
 24     destructor Destroy; override;
 25   end;
 26 
 27   TForm1 = class(TForm)
 28     ButtonDiscover: TButton;
 29     ButtonPair: TButton;
 30     ButtonUnPair: TButton;
 31     ButtonPairedDevices: TButton;
 32     DisplayR: TMemo;
 33     Edit1: TEdit;
 34     Button2: TButton;
 35     FreeSocket: TButton;
 36     Labeldiscoverable: TLabel;
 37     ComboBoxDevices: TComboBox;
 38     ComboBoxPaired: TComboBox;
 39     Panel1: TPanel;
 40     TabControl1: TTabControl;
 41     TabItem1: TTabItem;
 42     TabItem2: TTabItem;
 43     LabelNameSarver: TLabel;
 44     ButtonServices: TButton;
 45     ComboBoxServices: TComboBox;
 46     PanelClient: TPanel;
 47     LabelClient: TLabel;
 48     ButtonConnectToRFCOMM: TButton;
 49     PanelServer: TPanel;
 50     ButtonCloseReadingSocket: TButton;
 51     ButtonOpenReadingSocket: TButton;
 52     LabelServer: TLabel;
 53     Label1: TLabel;
 54     procedure ButtonDiscoverClick(Sender: TObject);
 55     procedure ButtonPairClick(Sender: TObject);
 56     procedure ButtonUnPairClick(Sender: TObject);
 57     procedure ButtonPairedDeviceClick(Sender: TObject);
 58     procedure FormShow(Sender: TObject);
 59     procedure ButtonOpenReadingSocketClick(Sender: TObject);
 60     procedure ButtonConnectToRFCOMMClick(Sender: TObject);
 61     procedure ButtonCloseReadingSocketClick(Sender: TObject);
 62     procedure Button2Click(Sender: TObject);
 63     procedure FormClose(Sender: TObject; var Action: TCloseAction);
 64     procedure FreeSocketClick(Sender: TObject);
 65     function ManagerConnected:Boolean;
 66     function GetServiceName(GUID: string): string;
 67     procedure ComboBoxPairedChange(Sender: TObject);
 68     procedure ButtonServicesClick(Sender: TObject);
 69   private
 70     { Private declarations }
 71     FBluetoothManager: TBluetoothManager;
 72     FDiscoverDevices: TBluetoothDeviceList;
 73     FPairedDevices: TBluetoothDeviceList;
 74     FAdapter: TBluetoothAdapter;
 75     FData: TBytes;
 76     FSocket: TBluetoothSocket;
 77     ItemIndex: Integer;
 78     ServerConnectionTH: TServerConnectionTH;
 79     procedure DevicesDiscoveryEnd(const Sender: TObject; const ADevices: TBluetoothDeviceList);
 80     procedure PairedDevices;
 81     procedure SendData;
 82   public
 83     { Public declarations }
 84   end;
 85 
 86 Const
 87   ServiceName = \'Basic Text Server\';
 88   ServiceGUI = \'{B62C4E8D-62CC-404B-BBBF-BF3E3BBB1378}\';
 89 var
 90   Form1: TForm1;
 91 
 92 implementation
 93 
 94 {$R *.fmx}
 95 {$R *.NmXhdpiPh.fmx ANDROID}
 96 {$R *.LgXhdpiPh.fmx ANDROID}
 97 {$R *.SmXhdpiPh.fmx ANDROID}
 98 {$R *.Macintosh.fmx MACOS}
 99 {$R *.iPhone4in.fmx IOS}
100 {$R *.Windows.fmx MSWINDOWS}
101 //配对(Pair)
102 procedure TForm1.ButtonPairClick(Sender: TObject);
103 begin
104   if ManagerConnected then
105     if ComboboxDevices.ItemIndex > -1 then
106       FAdapter.Pair(FDiscoverDevices[ComboboxDevices.ItemIndex])
107     else
108       ShowMessage(\'没有选择的设备(No device selected)\');
109 end;
110 
111 //取消配对(UnPair)
112 procedure TForm1.ButtonUnPairClick(Sender: TObject);
113 begin
114   if ManagerConnected then
115     if ComboboxPaired.ItemIndex > -1 then
116       FAdapter.UnPair(FPairedDevices[ComboboxPaired.ItemIndex])
117     else
118       ShowMessage(\'未选择配对设备(No Paired device selected)\');
119 end;
120 
121 procedure TForm1.ComboBoxPairedChange(Sender: TObject);
122 begin
123   LabelNameSarver.Text := ComboBoxPaired.Items[ComboBoxPaired.ItemIndex];
124 end;
125 
126 procedure TForm1.PairedDevices;
127 var
128   I: Integer;
129 begin
130   ComboboxPaired.Clear;
131   if ManagerConnected then
132   begin
133   FPairedDevices := FBluetoothManager.GetPairedDevices;
134   if FPairedDevices.Count > 0 then
135     for I:= 0 to FPairedDevices.Count - 1 do
136       ComboboxPaired.Items.Add(FPairedDevices[I].DeviceName)
137   else
138     ComboboxPaired.Items.Add(\'没有配对设备(No Paired Devices)\');
139   end;
140 end;
141 
142 //配对设备(Paired Devices)
143 procedure TForm1.ButtonPairedDeviceClick(Sender: TObject);
144 begin
145   PairedDevices;
146   ComboboxPaired.DropDown;
147 end;
148 
149 //服务(Services)
150 procedure TForm1.ButtonServicesClick(Sender: TObject);
151 var
152   LServices: TBluetoothServiceList;
153   LDevice: TBluetoothDevice;
154   I: Integer;
155 begin
156   ComboBoxServices.Clear;
157   if ManagerConnected then
158     if ComboboxPaired.ItemIndex > -1 then
159     begin
160       LDevice := FPairedDevices[ComboboxPaired.ItemIndex] as TBluetoothDevice;
161       LServices := LDevice.GetServices;
162       for I := 0 to LServices.Count - 1 do
163         ComboBoxServices.Items.Add(LServices[I].Name + \' --> \' + GUIDToString(LServices[I].UUID));
164       ComboBoxServices.ItemIndex := 0;
165       ComboBoxServices.DropDown;
166     end
167     else
168       ShowMessage(\'未选择配对设备(No paired device selected)\');
169 end;
170 
171 //释放客户套接字(Free Client Socket)
172 procedure TForm1.FreeSocketClick(Sender: TObject);
173 begin
174   FreeAndNil(FSocket);
175   DisplayR.Lines.Add(\'客户套接字释放(Client socket set free)\');
176   DisplayR.GoToLineEnd;
177 end;
178 
179 //清空(Clear)
180 procedure TForm1.Button2Click(Sender: TObject);
181 begin
182   DisplayR.ReadOnly := False;
183   DisplayR.SelectAll;
184   DisplayR.DeleteSelection;
185   DisplayR.ReadOnly := True;
186 end;
187 
188 function TForm1.GetServiceName(GUID: string): string;
189 var
190   LServices: TBluetoothServiceList;
191   LDevice: TBluetoothDevice;
192   I: Integer;
193 begin
194   LDevice := FPairedDevices[ComboboxPaired.ItemIndex] as TBluetoothDevice;
195   LServices := LDevice.GetServices;
196   for I := 0 to LServices.Count - 1 do
197   begin
198     if StringToGUID(GUID) = LServices[I].UUID then
199     begin
200       Result := LServices[I].Name;
201       break;
202     end;
203   end;
204 end;
205 
206 //发送短信给 - >(Send text to ->)
207 procedure TForm1.ButtonConnectToRFCOMMClick(Sender: TObject);
208 begin
209   if ManagerConnected then
210     try
211       SendData;
212     except
213       on E : Exception do
214       begin
215         DisplayR.Lines.Add(E.Message);
216         DisplayR.GoToTextEnd;
217         FreeAndNil(FSocket);
218       end;
219     end;
220 end;
221 
222 //判断蓝牙的状态
223 function TForm1.ManagerConnected:Boolean;
224 begin
225   if FBluetoothManager.ConnectionState = TBluetoothConnectionState.Connected then
226   begin
227     Labeldiscoverable.Text := FBluetoothManager.CurrentAdapter.AdapterName;
228     Result := True;
229   end
230   else
231   begin
232     Result := False;
233     DisplayR.Lines.Add(\'没有发现蓝牙设备(No Bluetooth device Found)\');
234     DisplayR.GoToTextEnd;
235   end
236 end;
237 
238 //发送信息方法
239 procedure TForm1.SendData;
240 var
241   ToSend: TBytes;
242   LDevice: TBluetoothDevice;
243 begin
244   if (FSocket = nil) or (ItemIndex <> ComboboxPaired.ItemIndex) then
245   begin
246     if ComboboxPaired.ItemIndex > -1 then
247     begin
248       LDevice := FPairedDevices[ComboboxPaired.ItemIndex] as TBluetoothDevice;
249       DisplayR.Lines.Add(GetServiceName(ServiceGUI));
250       DisplayR.GoToTextEnd;
251       FSocket := LDevice.CreateClientSocket(StringToGUID(ServiceGUI), False);
252       if FSocket <> nil then
253       begin
254         ItemIndex := ComboboxPaired.ItemIndex;
255         FSocket.Connect;
256         ToSend := TEncoding.UTF8.GetBytes(Edit1.Text);
257         FSocket.SendData(ToSend);
258         DisplayR.Lines.Add(\'短信已发送(Text Sent)\');
259         DisplayR.GoToTextEnd;
260       end
261       else
262         ShowMessage(\'Out of time -15s-\');
263     end
264     else
265       ShowMessage(\'未选择配对设备(No paired device selected)\');
266   end
267   else
268   begin
269     ToSend := TEncoding.UTF8.GetBytes(Edit1.Text);
270     FSocket.SendData(ToSend);
271     DisplayR.Lines.Add(\'短信已发送(Text Sent)\');
272     DisplayR.GoToTextEnd;
273   end;
274 end;
275 
276 //发现设备(Discover devices)
277 procedure TForm1.ButtonDiscoverClick(Sender: TObject);
278 begin
279   ComboboxDevices.Clear;
280   if ManagerConnected then
281   begin
282     FAdapter := FBluetoothManager.CurrentAdapter;
283     FBluetoothManager.StartDiscovery(10000);
284     FBluetoothManager.OnDiscoveryEnd := DevicesDiscoveryEnd;
285   end;
286 end;
287 
288 procedure TForm1.DevicesDiscoveryEnd(const Sender: TObject; const ADevices: TBluetoothDeviceList);
289 begin
290   TThread.Synchronize(nil, procedure
291   var
292     I: Integer;
293   begin
294     FDiscoverDevices := ADevices;
295     for I := 0 to ADevices.Count - 1 do
296       ComboboxDevices.Items.Add(ADevices[I].DeviceName + \'  -> \' + ADevices[I].Address);
297     ComboboxDevices.ItemIndex := 0;
298   end);
299 end;
300 
301 //创建文本服务(Create text service)
302 procedure TForm1.ButtonOpenReadingSocketClick(Sender: TObject);
303 begin
304   if (ServerConnectionTH = nil) and ManagerConnected then
305   begin
306     try
307       FAdapter := FBluetoothManager.CurrentAdapter;
308       ServerConnectionTH := TServerConnectionTH.Create(True);
309       ServerConnectionTH.FServerSocket := FAdapter.CreateServerSocket(ServiceName, StringToGUID(ServiceGUI), False);
310       ServerConnectionTH.Start;
311       DisplayR.Lines.Add(\' - 创建服务(Service created): "\'+ServiceName+\'"\');
312       DisplayR.GoToTextEnd;
313     except
314       on E : Exception do
315       begin
316         DisplayR.Lines.Add(E.Message);
317         DisplayR.GoToTextEnd;
318       end;
319     end;
320   end;
321 end;
322 
323 //删除文字服务(Remove text service)
324 procedure TForm1.ButtonCloseReadingSocketClick(Sender: TObject);
325 begin
326   if ServerConnectionTH <> nil then
327   begin
328     ServerConnectionTH.Terminate;
329     ServerConnectionTH.WaitFor;
330     FreeAndNil(ServerConnectionTH);
331     DisplayR.Lines.Add(\' - 服务删除(Service removed) -\');
332     DisplayR.GoToTextEnd;
333   end
334 end;
335 
336 //显示窗体时，建立蓝牙管理器，并检查是否开启
337 procedure TForm1.FormShow(Sender: TObject);
338 begin
339   try
340     LabelServer.Text := ServiceName;
341     LabelClient.Text := \'Client of \'+ServiceName;
342     FBluetoothManager := TBluetoothManager.Current;
343     FAdapter := FBluetoothManager.CurrentAdapter;
344     if ManagerConnected then
345     begin
346       PairedDevices;
347       ComboboxPaired.ItemIndex := 0;
348     end;
349   except
350     on E : Exception do
351     begin
352       ShowMessage(E.Message);
353     end;
354   end;
355 end;
356 
357 //关闭时，释放线程
358 procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
359 begin
360   if ServerConnectionTH <> nil then
361   begin
362     ServerConnectionTH.Terminate;
363     ServerConnectionTH.WaitFor;
364     FreeAndNil(ServerConnectionTH);
365   end
366 end;
367 
368 {TServerConnection}
369 constructor TServerConnectionTH.Create(ACreateSuspended: Boolean);
370 begin
371   inherited;
372 end;
373 
374 //释放资源
375 destructor TServerConnectionTH.Destroy;
376 begin
377   FSocket.Free;
378   FServerSocket.Free;
379   inherited;
 
                       
                    
                     
                      



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