הגדרת מנהל החיבורים
מנהל החיבור מטפל בכל אירועי החיבור והוא הממשק עבור העברת נתונים בין מכשירים. זו דרישה הן עבור מודעות ועל הגילוי.
קודם כול, צריך לבחור מזהה שירות כדי לזהות את האפליקציה באופן ייחודי. לטובה ביותר
יש להשתמש בשם החבילה של האפליקציה (לדוגמה, com.example.app
).
בשלב הבא, בוחרים אסטרטגיה לתרחיש לדוגמה הרצוי.
האסטרטגיה שבחרת קובעת את הטופולוגיה של החיבור לאפליקציה שלך (.cluster
,
.star
.pointToPoint
).
אתחול מנהל החיבור והטמעת השיטות להענקת גישה:
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.
}
}
}
התחלת הפרסום
כדי להתחיל לפרסם, צריך לאתחל את המפרסם, להטמיע את השיטות להענקת גישה,
ולהתקשר אל startAdvertising(using:)
.
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)
}
}
התחלת החיפוש והגילוי
כדי להתחיל לגלות, לאתחל את כלי הגילוי, להטמיע את השיטות להענקת גישה,
ולהתקשר אל startDiscovery()
.
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.
}
}