Bluetooth Low Energy advertising

// Start legacy advertising. Works for devices with 5.x controllers,
// and devices that support multi-advertising.
voidexample1(){
BluetoothLeAdvertiseradvertiser=
BluetoothAdapter.getDefaultAdapter().getBluetoothLeAdvertiser();
AdvertisingSetParametersparameters=(newAdvertisingSetParameters.Builder())
.setLegacyMode(true)// True by default, but set here as a reminder.
.setConnectable(true)
.setInterval(AdvertisingSetParameters.INTERVAL_HIGH)
.setTxPowerLevel(AdvertisingSetParameters.TX_POWER_MEDIUM)
.build();
AdvertiseDatadata=(newAdvertiseData.Builder()).setIncludeDeviceName(true).build();
AdvertisingSetCallbackcallback=newAdvertisingSetCallback(){
@Override
publicvoidonAdvertisingSetStarted(AdvertisingSetadvertisingSet,inttxPower,intstatus){
Log.i(LOG_TAG,"onAdvertisingSetStarted(): txPower:"+txPower+" , status: "
+status);
currentAdvertisingSet=advertisingSet;
}
@Override
publicvoidonAdvertisingDataSet(AdvertisingSetadvertisingSet,intstatus){
Log.i(LOG_TAG,"onAdvertisingDataSet() :status:"+status);
}
@Override
publicvoidonScanResponseDataSet(AdvertisingSetadvertisingSet,intstatus){
Log.i(LOG_TAG,"onScanResponseDataSet(): status:"+status);
}
@Override
publicvoidonAdvertisingSetStopped(AdvertisingSetadvertisingSet){
Log.i(LOG_TAG,"onAdvertisingSetStopped():");
}
};
advertiser.startAdvertisingSet(parameters,data,null,null,null,callback);
// After onAdvertisingSetStarted callback is called, you can modify the
// advertising data and scan response data:
currentAdvertisingSet.setAdvertisingData(newAdvertiseData.Builder().
setIncludeDeviceName(true).setIncludeTxPowerLevel(true).build());
// Wait for onAdvertisingDataSet callback...
currentAdvertisingSet.setScanResponseData(new
AdvertiseData.Builder().addServiceUuid(newParcelUuid(UUID.randomUUID())).build());
// Wait for onScanResponseDataSet callback...
// When done with the advertising:
advertiser.stopAdvertisingSet(callback);
}

voidexample2(){
BluetoothAdapteradapter=BluetoothAdapter.getDefaultAdapter();
BluetoothLeAdvertiseradvertiser=
BluetoothAdapter.getDefaultAdapter().getBluetoothLeAdvertiser();
// Check if all features are supported
if(!adapter.isLe2MPhySupported()){
Log.e(LOG_TAG,"2M PHY not supported!");
return;
}
if(!adapter.isLeExtendedAdvertisingSupported()){
Log.e(LOG_TAG,"LE Extended Advertising not supported!");
return;
}
intmaxDataLength=adapter.getLeMaximumAdvertisingDataLength();
AdvertisingSetParameters.Builderparameters=(newAdvertisingSetParameters.Builder())
.setLegacyMode(false)
.setInterval(AdvertisingSetParameters.INTERVAL_HIGH)
.setTxPowerLevel(AdvertisingSetParameters.TX_POWER_MEDIUM)
.setPrimaryPhy(BluetoothDevice.PHY_LE_1M)
.setSecondaryPhy(BluetoothDevice.PHY_LE_2M);
AdvertiseDatadata=(newAdvertiseData.Builder()).addServiceData(new
ParcelUuid(UUID.randomUUID()),
"You can fit large amounts of data up to maxDataLength. This goes up to 1650 bytes. For legacy advertising this would not work".getBytes()).build();
AdvertisingSetCallbackcallback=newAdvertisingSetCallback(){
@Override
publicvoidonAdvertisingSetStarted(AdvertisingSetadvertisingSet,inttxPower,intstatus){
Log.i(LOG_TAG,"onAdvertisingSetStarted(): txPower:"+txPower+" , status: "
+status);
currentAdvertisingSet=advertisingSet;
}
@Override
publicvoidonAdvertisingSetStopped(AdvertisingSetadvertisingSet){
Log.i(LOG_TAG,"onAdvertisingSetStopped():");
}
};
advertiser.startAdvertisingSet(parameters.build(),data,null,null,null,callback);
// After the set starts, you can modify the data and parameters of currentAdvertisingSet.
currentAdvertisingSet.setAdvertisingData((new
AdvertiseData.Builder()).addServiceData(newParcelUuid(UUID.randomUUID()),
"Without disabling the advertiser first, you can set the data, if new data is less than 251 bytes long.".getBytes()).build());
// Wait for onAdvertisingDataSet callback...
// Can also stop and restart the advertising
currentAdvertisingSet.enableAdvertising(false,0,0);
// Wait for onAdvertisingEnabled callback...
currentAdvertisingSet.enableAdvertising(true,0,0);
// Wait for onAdvertisingEnabled callback...
// Or modify the parameters - for example, lower the tx power
currentAdvertisingSet.enableAdvertising(false,0,0);
// Wait for onAdvertisingEnabled callback...
currentAdvertisingSet.setAdvertisingParameters(parameters.setTxPowerLevel
(AdvertisingSetParameters.TX_POWER_LOW).build());
// Wait for onAdvertisingParametersUpdated callback...
currentAdvertisingSet.enableAdvertising(true,0,0);
// Wait for onAdvertisingEnabled callback...
// When done with the advertising:
advertiser.stopAdvertisingSet(callback);
}