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ibeacon是ble的一种，搜索ibeacon基站关键在于设备扫描到的scanrecord数组，识别是否有下面加粗斜体的02 15这两个数字。如果有，搜索到的蓝牙设备就是ibeacon。
// airlocate:
// 02 01 1a 1a ff 4c 00 02 15 # apple's fixed ibeacon advertising prefix
// e2 c5 6d b5 df fb 48 d2 b0 60 d0 f5 a7 10 96 e0 # ibeacon profile uuid
// 00 00 # major
// 00 00 # minor
// c5 # the 2's complement of the calibrated tx power
下面分步骤来实现检测ibeacon热点。
一、获得手机蓝牙控制权限
在manifest 文件中写上：
<uses-permission android:name="android.permission.bluetooth"/> <uses-permission android:name="android.permission.bluetooth_admin"/>
二、检测手机是否支持蓝牙，并获取mbluetoothadapter 对象
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if (!getpackagemanager().hassystemfeature(
packagemanager.feature_bluetooth_le))
{
toast.maketext(this, r.string.ble_not_supported, toast.length_short)
.show();
finish();
}
final bluetoothmanager bluetoothmanager = (bluetoothmanager) getsystemservice(context.bluetooth_service);
mbluetoothadapter = bluetoothmanager.getadapter();
if (mbluetoothadapter == null)
{
toast.maketext(this, r.string.error_bluetooth_not_supported,
toast.length_short).show();
finish();
return;
}
三、实现lescancallback回调接口
设备每次检测到一个蓝牙设备，就会回调这个接口中的onlescan()方法，并且传入扫描到的device，rssi，scanrecord等参数。
private bluetoothadapter.lescancallback mlescancallback = new bluetoothadapter.lescancallback()
{
@override
public void onlescan(final bluetoothdevice device, int rssi,
byte[] scanrecord)
{
//在这里处理扫描到的参数
//判断是不是ibeacon设备，做相应的处理。
}
};
四、处理扫描到的参数的方法
public class ibeaconclass
{
static public class ibeacon
{
public string name;
public int major;
public int minor;
public string proximityuuid;
public string bluetoothaddress;
public int txpower;
public int rssi;
}
/**
* 将扫描到的信息传入这个方法
* 该方法会判断扫描到的设备是不是ibeacon
* 如果是就返回一个ibeacon对象
* 如果不是就返回null
* @param device
* @param rssi
* @param scandata
* @return
*/
public static ibeacon fromscandata(bluetoothdevice device, int rssi,
byte[] scandata)
{
int startbyte = 2;
boolean patternfound = false;
while (startbyte <= 5)
{
if (((int) scandata[startbyte + 2] & 0xff) == 0x02
&& ((int) scandata[startbyte + 3] & 0xff) == 0x15)
{
// yes! this is an ibeacon
patternfound = true;
break;
} else if (((int) scandata[startbyte] & 0xff) == 0x2d
&& ((int) scandata[startbyte + 1] & 0xff) == 0x24
&& ((int) scandata[startbyte + 2] & 0xff) == 0xbf
&& ((int) scandata[startbyte + 3] & 0xff) == 0x16)
{
ibeacon ibeacon = new ibeacon();
ibeacon.major = 0;
ibeacon.minor = 0;
ibeacon.proximityuuid = "00000000-0000-0000-0000-000000000000";
ibeacon.txpower = -55;
return ibeacon;
} else if (((int) scandata[startbyte] & 0xff) == 0xad
&& ((int) scandata[startbyte + 1] & 0xff) == 0x77
&& ((int) scandata[startbyte + 2] & 0xff) == 0x00
&& ((int) scandata[startbyte + 3] & 0xff) == 0xc6)
{
ibeacon ibeacon = new ibeacon();
ibeacon.major = 0;
ibeacon.minor = 0;
ibeacon.proximityuuid = "00000000-0000-0000-0000-000000000000";
ibeacon.txpower = -55;
return ibeacon;
}
startbyte++;
}
if (patternfound == false)
{
// this is not an ibeacon
return null;
}
ibeacon ibeacon = new ibeacon();
ibeacon.major = (scandata[startbyte + 20] & 0xff) * 0x100
+ (scandata[startbyte + 21] & 0xff);
ibeacon.minor = (scandata[startbyte + 22] & 0xff) * 0x100
+ (scandata[startbyte + 23] & 0xff);
ibeacon.txpower = (int) scandata[startbyte + 24]; // this one is signed
ibeacon.rssi = rssi;
// airlocate:
// 02 01 1a 1a ff 4c 00 02 15 # apple's fixed ibeacon advertising prefix
// e2 c5 6d b5 df fb 48 d2 b0 60 d0 f5 a7 10 96 e0 # ibeacon profile
// uuid
// 00 00 # major
// 00 00 # minor
// c5 # the 2's complement of the calibrated tx power
// estimote:
// 02 01 1a 11 07 2d 24 bf 16
// 394b31ba3f486415ab376e5c0f09457374696d6f7465426561636f6e00000000000000000000000000000000000000000000000000
byte[] proximityuuidbytes = new byte[16];
system.arraycopy(scandata, startbyte + 4, proximityuuidbytes, 0, 16);
string hexstring = bytestohexstring(proximityuuidbytes);
stringbuilder sb = new stringbuilder();
sb.append(hexstring.substring(0, 8));
sb.append("-");
sb.append(hexstring.substring(8, 12));
sb.append("-");
sb.append(hexstring.substring(12, 16));
sb.append("-");
sb.append(hexstring.substring(16, 20));
sb.append("-");
sb.append(hexstring.substring(20, 32));
ibeacon.proximityuuid = sb.tostring();
if (device != null)
{
ibeacon.bluetoothaddress = device.getaddress();
ibeacon.name = device.getname();
}
return ibeacon;
}
private static string bytestohexstring(byte[] src)
{
stringbuilder stringbuilder = new stringbuilder("");
if (src == null || src.length <= 0)
{
return null;
}
for (int i = 0; i < src.length; i++)
{
int v = src[i] & 0xff;
string hv = integer.tohexstring(v);
if (hv.length() < 2)
{
stringbuilder.append(0);
}
stringbuilder.append(hv);
}
return stringbuilder.tostring();
}
}
五、开启蓝牙
mbluetoothadapter.enable();
六、开始扫描
mbluetoothadapter.startlescan(mlescancallback);
代码改自链接地址
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