This document discusses using beacons and the Nearby API for Android location implementation. It describes what a Bluetooth Low Energy beacon is, including that it uses the 2.4GHz band to broadcast information like an ID up to 10 times per second. It also discusses the Eddystone beacon standard and Google's Proximity Beacon API, explaining how to register beacons and subscribe to messages using the Nearby API on Android and iOS. Code examples are provided for setting up message filters and subscriptions.

1. Conhecendo e utilizando Beacons e a
Nearby API para Android
Marcelo Quinta
@mrquinta

2. Como implementar localização?

3. Como implementar localização?
Wifi Satélite Rede móvel Bluetooth

4. O que é um beacon BLE?

11. O que é um beacon BLE?
• Dispositivo por localização por bluetooth
• 2.4 Ghz, mas em canal diferente
• Certa capacidade de guardar informações
• ˜30bytes
• Bateria que pode durar anos
• Broadcast de uma a dez vezes por segundo

12. https://www.youtube.com/watch?v=TZf4WquRGJU

14. CONTEXTO

17. Qual é a parada?

19. Beacon

20. Beacon

21. Beacon
12345
Beacon

22. ???
Beacon
12345
Beacon

23. ???
Beacon
12345
Beacon
Parada X

25. https://github.com/google/eddystone
Eddystone

26. Eddystone
• Padrão open-source
• ID
• URL
• Ephemeral IDs
• Dados de telemetria
• Broadcast menos frequente que o iBeacon

27. https://www.youtube.com/watch?v=TZf4WquRGJU

28. Google PlacesNearby APIProximity beacons API
APIs

29. Começando

30. Passo 1: Hardware

31. Passo 2: Registro com Proximity Beacons API

32. Passo 2: Registro com Proximity Beacons API
https://proximitybeacon.googleapis.com/v1beta1/beacons:register

33. Passo 3: Codificação
Nearby API
Google Play Services 7.8 Bluetooth Sons inaudíveis

34. Android:
MesssageFilter.Builder messageFilterBuilder = new MessageFilter.Builder()

35. Android:
MesssageFilter.Builder messageFilterBuilder = new MessageFilter.Builder()
// Include messages published by this app.
.includeAllMyTypes()
// Include messages of a specific type, published by nearby beacons.
.includeNamespacedType("com.google.location.beaconservice", "sample_attachment");
messageFilterBuilder.includeDevicePresenceMessages(
NearbyDeviceFilter.forEddystone(MY_EDDYSTONE_NAMESPACE))

36. Android:
MesssageFilter.Builder messageFilterBuilder = new MessageFilter.Builder()
// Include messages published by this app.
.includeAllMyTypes()
// Include messages of a specific type, published by nearby beacons.
.includeNamespacedType("org.example.beaconinfoeservice", "sample_attachment");
messageFilterBuilder.includeDevicePresenceMessages(
NearbyDeviceFilter.forEddystone(MY_EDDYSTONE_NAMESPACE))
SubscribeOptions options = new SubscribeOptions.Builder()
.setStrategy(getStrategy())
.setFilter(messageFilterBuilder.build())
.build();
Nearby.Messages.subscribe(mGoogleApiClient, mMessageListener, options)
.setResultCallback(new ErrorCheckingCallback("subscribe(MessageListener)"));

37. iOS:
GNSStrategy *beaconStrategy

38. iOS:
GNSStrategy *beaconStrategy = [GNSStrategy
strategyWithParamsBlock:^(GNSStrategyParams *params) {
params.includeBLEBeacons = YES;
}];

39. iOS:
GNSStrategy *beaconStrategy = [GNSStrategy
strategyWithParamsBlock:^(GNSStrategyParams *params) {
params.includeBLEBeacons = YES;
}];
GNSSubscriptionParams *beaconParams = [GNSSubscriptionParams
paramsWithMessageNamespace:@“com.mycompany.mybeaconservice”
type:@“mybeacontype”
strategy:beaconStrategy];
_beaconSubscription = [_messageManager subscriptionWithParams:beaconParams
messageFoundHandler:myMessageFoundHandler
messageLostHandler:myMessageLostHandler];

40. // it here in code.
if (!_signInButton) {
_signInButton = [[GIDSignInButton alloc] init];
[_unsignedInView addSubview:_signInButton];
CGRect r;
r.origin.x = (viewf.width / 2) - 75;
r.origin.y = viewf.height / 2 - 20;
r.size.width = 150;
r.size.height = 40;
_signInButton.frame = r;
}
if (!_signInStatusIndicator) {
_signInStatusIndicator = [[UIActivityIndicatorView alloc] init];
_signInStatusIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
[_unsignedInView addSubview:_signInStatusIndicator];
CGRect r;
r.origin.x = (viewf.width / 2) - 40;
r.origin.y = viewf.height / 2 - 40;
r.size.width = 80;
r.size.height = 80;
_signInStatusIndicator.frame = r;
}
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(loginStatusChangedNotification:)
name:kBSDLoginStatusChangedNotification
object:nil];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
[GIDSignIn sharedInstance].uiDelegate = self;
}
- (void)loginStatusChangedNotification:(NSNotification *)notification {
[self updateUIForSignInStatus];
}

41. Seja explícito ao
realizar broadcast
Tenha a permissão Cuidado com
a bateria

42. Mais informações
Nearby Connections e Nearby Messages
developer.android.com/nearby
Beacons em geral
developer.google.com/beacons
Proximity Beacon API
developer.google.com/beacons/proximity
Eddystone
github.com/google/eddystone

43. 1/3 Developing with Beacons
Vídeos recomendados

44. Physical web
Algo a se pensar
https://github.com/google/physical-web

45. Venha conversar com a galera no Buteco!
Google Developer Experts

46. Marcelo Quinta
@mrquinta
Obrigado
Essa palestra foi baseada em material disponibilizado pelo Google. Dê uma olhada no canal do Youtube deles: https://www.youtube.com/user/GoogleDevelopers