Werben und entdecken

Verbindungsmanager einrichten

Der Verbindungsmanager verarbeitet alle Verbindungsereignisse und ist die Schnittstelle für Daten zwischen Geräten zu übertragen. Es ist eine Voraussetzung für sowohl für Anzeigen als auch und Auffindbarkeit.

Zunächst sollte eine Dienst-ID ausgewählt werden, um Ihre App eindeutig zu identifizieren. Als beste verwenden Sie den Paketnamen Ihrer App (z. B. com.example.app).

Als Nächstes wählen Sie eine Strategie für Ihren Anwendungsfall aus. Die Die von Ihnen ausgewählte Strategie bestimmt die Verbindungstopologie für Ihre Anwendung (.cluster, .star .pointToPoint).

Initialisieren Sie den Verbindungsmanager und implementieren Sie die Delegatmethoden:

Swift

import NearbyConnections

class Example {
  let connectionManager: ConnectionManager

  init() {
    connectionManager = ConnectionManager(serviceID: "com.example.app", strategy: .cluster)
    connectionManager.delegate = self
  }
}

extension Example: ConnectionManagerDelegate {
  func connectionManager(
    _ connectionManager: ConnectionManager, didReceive verificationCode: String,
    from endpointID: EndpointID, verificationHandler: @escaping (Bool) -> Void) {
    // Optionally show the user the verification code. Your app should call this handler
    // with a value of `true` if the nearby endpoint should be trusted, or `false`
    // otherwise.
    verificationHandler(true)
  }

  func connectionManager(
    _ connectionManager: ConnectionManager, didReceive data: Data,
    withID payloadID: PayloadID, from endpointID: EndpointID) {
    // A simple byte payload has been received. This will always include the full data.
  }

  func connectionManager(
    _ connectionManager: ConnectionManager, didReceive stream: InputStream,
    withID payloadID: PayloadID, from endpointID: EndpointID,
    cancellationToken token: CancellationToken) {
    // We have received a readable stream.
  }

  func connectionManager(
    _ connectionManager: ConnectionManager,
    didStartReceivingResourceWithID payloadID: PayloadID,
    from endpointID: EndpointID, at localURL: URL,
    withName name: String, cancellationToken token: CancellationToken) {
    // We have started receiving a file. We will receive a separate transfer update
    // event when complete.
  }

  func connectionManager(
    _ connectionManager: ConnectionManager,
    didReceiveTransferUpdate update: TransferUpdate,
    from endpointID: EndpointID, forPayload payloadID: PayloadID) {
    // A success, failure, cancelation or progress update.
  }

  func connectionManager(
    _ connectionManager: ConnectionManager, didChangeTo state: ConnectionState,
    for endpointID: EndpointID) {
    switch state {
    case .connecting:
      // A connection to the remote endpoint is currently being established.
    case .connected:
      // We're connected! Can now start sending and receiving data.
    case .disconnected:
      // We've been disconnected from this endpoint. No more data can be sent or received.
    case .rejected:
      // The connection was rejected by one or both sides.
    }
  }
}

Jetzt werben

Initialisieren Sie den Werbetreibenden, implementieren Sie die Delegatmethoden, und rufe startAdvertising(using:) an.

Swift

import NearbyConnections

class Example {
  let connectionManager: ConnectionManager
  let advertiser: Advertiser

  init() {
    connectionManager = ConnectionManager(serviceID: "com.example.app", strategy: .cluster)
    connectionManager.delegate = self

    advertiser = Advertiser(connectionManager: connectionManager)
    advertiser.delegate = self

    // The endpoint info can be used to provide arbitrary information to the
    // discovering device (e.g. device name or type).
    advertiser.startAdvertising(using: "My Device".data(using: .utf8)!)
  }
}

extension Example: AdvertiserDelegate {
  func advertiser(
    _ advertiser: Advertiser, didReceiveConnectionRequestFrom endpointID: EndpointID,
    with context: Data, connectionRequestHandler: @escaping (Bool) -> Void) {
    // Accept or reject any incoming connection requests. The connection will still need to
    // be verified in the connection manager delegate.
    connectionRequestHandler(true)
  }
}

Erkennung starten

Um mit der Erkennung zu beginnen, initialisieren Sie den Entdecker, implementieren Sie seine delegierten Methoden, und rufe startDiscovery() an.

Swift

import NearbyConnections

class Example {
  let connectionManager: ConnectionManager
  let discoverer: Discoverer

  init() {
    connectionManager = ConnectionManager(serviceID: "com.example.app", strategy: .cluster)
    connectionManager.delegate = self

    discoverer = Discoverer(connectionManager: connectionManager)
    discoverer.delegate = self

    discoverer.startDiscovery()
  }
}

extension Example: DiscovererDelegate {
  func discoverer(
    _ discoverer: Discoverer, didFind endpointID: EndpointID, with context: Data) {
    // An endpoint was found.
  }

  func discoverer(_ discoverer: Discoverer, didLose endpointID: EndpointID) {
    // A previously discovered endpoint has gone away.
  }
}