iBeacon
Just install the apps in 2 devices for simulated the role of scanner and broadcaster :)
Build from Android Studio 3.5 tested on Xiaomi MI MIX3 and Samsung galaxy S8
App Demo
This app shows the example about iBeacon simulator is a company device (employer) and Scanner is an employee's device that check-in when arrived the area of the company.
iBeacon Simulator - touch the iBeacon stone for start broadcasting
iBeacon Scanner - Click the scan button for scan iBeacon (that broadcasting from this Apps.)
Simulator
Referance Library : https://github.com/AltBeacon/android-beacon-library
//Init beacon device
beacon = new Beacon.Builder()
.setId1(getString(R.string.beacon_uuid_simulator)) // UUID for beacon
.setId2(getString(R.string.beacon_major_simulator)) // Major for beacon
.setId3(getString(R.string.beacon_minor_simulator)) // Minor for beacon
.setManufacturer(0x004C) // Radius Networks.0x0118 Change this for other beacon layouts//0x004C for iPhone
.setTxPower(-56) // Power in dB
.setDataFields(Arrays.asList(new Long[]{0l})) // Remove this for beacon layouts without d: fields
.build();
Beacon layout list : https://beaconlayout.wordpress.com/
//set iBeacon layout
beaconTransmitter = new BeaconTransmitter (getActivity(), new BeaconParser()
.setBeaconLayout ("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));
//start and stop beacon trasmitter
if (beaconTransmitter.isStarted()) {
beaconTransmitter.stopAdvertising();
} else {
beaconTransmitter.startAdvertising(beacon, new AdvertiseCallback() {
@Override
public void onStartFailure(int errorCode) {
Log.e(TAG, "Advertisement start failed with code: " + errorCode);
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void onStartSuccess(AdvertiseSettings settingsInEffect) {
Log.i(TAG, "Advertisement start succeeded." + settingsInEffect.toString());
}
});
}
Scanner
Referance : https://github.com/kiteflo/iBeaconAndroidDemo/
Example Scanner : TimeAttendantFastFragment.java
btManager = (BluetoothManager) getActivity().getSystemService(Context.BLUETOOTH_SERVICE);
btAdapter = btManager.getAdapter();
\\init LE scanner for API Level >= 21
if (Build.VERSION.SDK_INT >= 21) {
mLEScanner = btAdapter.getBluetoothLeScanner();
settings = new ScanSettings.Builder()
.setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
.build();
filters = new ArrayList<>();
}
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
if (Build.VERSION.SDK_INT < 21) {
Log.i(TAG, "runnable stop SDK_INT < 21");
btAdapter.stopLeScan(leScanCallback);
} else {
Log.i(TAG, "runnable stop SDK_INT >= 21");
mLEScanner.stopScan(mScanCallback);
}
}
}, SCAN_PERIOD);
if (Build.VERSION.SDK_INT < 21) {
btAdapter.startLeScan(leScanCallback);
} else {
mLEScanner.startScan(filters, settings, mScanCallback);
}
Scancallback - Retrieved ScanResult to Byte
private ScanCallback mScanCallback = new ScanCallback() {
@Override
public void onScanResult(int callbackType, ScanResult result) {
Log.i(TAG, "callbackType " + String.valueOf(callbackType));
byte[] scanRecord = result.getScanRecord().getBytes();
findBeaconPattern(scanRecord);
}
@Override
public void onBatchScanResults(List<ScanResult> results) {
for (ScanResult sr : results) {
Log.i(TAG, "ScanResult - Results" + sr.toString());
}
}
@Override
public void onScanFailed(int errorCode) {
Log.e(TAG, "Scan Failed Error Code: " + errorCode);
}
};
LeScanCallback
private BluetoothAdapter.LeScanCallback leScanCallback = new BluetoothAdapter.LeScanCallback() {
@Override
public void onLeScan(final BluetoothDevice device, final int rssi, final byte[] scanRecord) {
findBeaconPattern(scanRecord);
}
};
Find Beacon pattern and Convert to a Beacon profile
private void findBeaconPattern(byte[] scanRecord) {
int startByte = 2;
boolean patternFound = false;
while (startByte <= 5) {
if (((int) scanRecord[startByte + 2] & 0xff) == 0x02 && //Identifies an iBeacon
((int) scanRecord[startByte + 3] & 0xff) == 0x15) { //Identifies correct data length
patternFound = true;
break;
}
startByte++;
}
if (patternFound) {
//Convert to hex String
byte[] uuidBytes = new byte[16];
System.arraycopy(scanRecord, startByte + 4, uuidBytes, 0, 16);
String hexString = bytesToHex(uuidBytes);
//UUID detection
String uuid = hexString.substring(0, 8) + "-" +
hexString.substring(8, 12) + "-" +
hexString.substring(12, 16) + "-" +
hexString.substring(16, 20) + "-" +
hexString.substring(20, 32);
// major
final int major = (scanRecord[startByte + 20] & 0xff) * 0x100 + (scanRecord[startByte + 21] & 0xff);
// minor
final int minor = (scanRecord[startByte + 22] & 0xff) * 0x100 + (scanRecord[startByte + 23] & 0xff);
Log.i(TAG, "UUID: " + uuid + "\\nmajor: " + major + "\\nminor" + minor);
}
}