Android实例-获取安卓手机WIFI信息(XE8+小米2)

结果：

1.必须打开Access wifi state权限，不打开权限会出图二的错误。

相关资料：

http://blog.csdn.net/lyf_lyf/article/category/173576

实例代码：

  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, FMX.ScrollBox,
  8   FMX.Memo, FMX.StdCtrls, FMX.Controls.Presentation,
  9   Androidapi.JNI.GraphicsContentViewText,//需要引入
 10   Androidapi.JNIBridge,//需要引入
 11   Androidapi.JNI.Telephony,//需要引入
 12   Androidapi.JNI.JavaTypes,//需要引入
 13   FMX.Helpers.Android,//需要引入
 14   Androidapi.JNI.Net,//需要引入
 15   Androidapi.Helpers;//需要引入
 16
 17 type
 18   TForm1 = class(TForm)
 19     Label1: TLabel;
 20     Button1: TButton;
 21     Memo1: TMemo;
 22     procedure Button1Click(Sender: TObject);
 23   private
 24     { Private declarations }
 25   public
 26     { Public declarations }
 27   end;
 28
 29 var
 30   Form1: TForm1;
 31
 32 implementation
 33
 34 {$R *.fmx}
 35 {$R *.NmXhdpiPh.fmx ANDROID}
 36
 37 //ip地址整数转字符串
 38 function int2Ip(intIP : Int64) : string;
 39 var
 40   n : int64;
 41   ip4, ip3, ip2, ip1: string;
 42 begin
 43   Result := ‘‘;
 44   n := intIP shr 24;
 45   intIP := intIP xor (n shl 24);
 46   ip4 := IntToStr(n);
 47
 48   n := intIP shr 16;
 49   intIP := intIP xor (n shl 16);
 50   ip3 := IntToStr(n);
 51
 52   n := intIP shr 8;
 53   intIP := intIP xor (n shl 8);
 54   ip2 := IntToStr(n);
 55
 56   n := intIP;
 57   ip1 := IntToStr(n);
 58
 59   Result := ip1 + ‘.‘ + ip2  + ‘.‘ + ip3  + ‘.‘ + ip4;
 60 end;
 61
 62 //ip地址字符串转整数（没测过）
 63 function ip2Int(const strIP : string): Int64;
 64 var
 65   lst : TStringList;
 66   i : integer;
 67 begin
 68   result := 0;
 69   lst := TStringList.Create;
 70   try
 71     lst.Delimiter := ‘.‘;
 72     lst.DelimitedText := strIP;
 73     for i := 0 to lst.Count - 1 do
 74       result := result + StrToInt64(lst[i]) shl (24 - i * 8);
 75   finally
 76     lst.Free;
 77   end;
 78 end;
 79
 80 procedure TForm1.Button1Click(Sender: TObject);
 81 var
 82   Service: JObject;
 83   WifiManager: JWifiManager;
 84   ConnectionInfo: JWifiInfo;
 85   ScanResults: JList;
 86   ScanResult: JScanResult;
 87   I: Integer;
 88   iIP: Int64;
 89 begin
 90   Memo1.Lines.Clear;
 91   Service := SharedActivity.getSystemService(TJContext.JavaClass.WIFI_SERVICE);
 92   WifiManager := TJWifiManager.Wrap((Service as ILocalObject).GetObjectID);
 93   if not WifiManager.isWifiEnabled then
 94     Memo1.Lines.Add(‘WiFi禁用‘)
 95   else
 96   begin
 97     ConnectionInfo := WifiManager.getConnectionInfo;
 98     Memo1.Lines.Add(‘连接信息‘);
 99     Memo1.Lines.Add(‘  SSID: ‘ + JStringToString(ConnectionInfo.getSSID));
100     Memo1.Lines.Add(‘  BSSID: ‘ + JStringToString(ConnectionInfo.getBSSID));
101     Memo1.Lines.Add(‘  IPV4: ‘ +  int2Ip(ConnectionInfo.getIpAddress));
102     Memo1.Lines.Add(‘  MAC address: ‘ + JStringToString(ConnectionInfo.getMacAddress));
103     ScanResults := WifiManager.getScanResults;
104     for I := 0 to ScanResults.size - 1 do
105     begin
106       Memo1.Lines.Add(‘‘);
107       Memo1.Lines.Add(‘检测到的接入点 ‘ + IntToStr(I));
108       ScanResult := TJScanResult.Wrap((ScanResults.get(I) as ILocalObject).GetObjectID);
109       Memo1.Lines.Add(‘  SSID: ‘ + JStringToString(ScanResult.SSID));
110       Memo1.Lines.Add(‘  BSSID: ‘ + JStringToString(ScanResult.BSSID));
111       Memo1.Lines.Add(‘  Capabilities: ‘ + JStringToString(ScanResult.capabilities));
112       Memo1.Lines.Add(‘  Frequency: ‘ + IntToStr(ScanResult.frequency) + ‘MHz‘);
113       Memo1.Lines.Add(‘  Signal level: ‘ + IntToStr(ScanResult.level) + ‘dBm‘);
114     end
115   end;
116 end;
117
118 end.