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Exemples & Utilisations

Cette guide fournit des exemples pratiques pour les modèles d'applications Apple Watch courants en utilisant @capgo/capacitor-watch.

Exemple 1 : Suivi de santé et de fitness

Section intitulée « Exemple 1 : Suivi de santé et de forme physique »

Synchroniser les données d'entraînement entre montre et téléphone.

import SwiftUI
import CapgoWatchSDK


struct WorkoutView: View {
    @ObservedObject var connector = WatchConnector.shared
    @State private var heartRate: Double = 0
    @State private var calories: Double = 0
    @State private var isTracking = false


    var body: some View {
        VStack(spacing: 12) {
            // Heart Rate Display
            HStack {
                Image(systemName: "heart.fill")
                    .foregroundColor(.red)
                Text("\(Int(heartRate)) BPM")
                    .font(.title2)
            }


            // Calories
            HStack {
                Image(systemName: "flame.fill")
                    .foregroundColor(.orange)
                Text("\(Int(calories)) cal")
            }


            // Start/Stop Button
            Button(isTracking ? "Stop" : "Start") {
                toggleTracking()
            }
            .buttonStyle(.borderedProminent)
            .tint(isTracking ? .red : .green)
        }
        .onReceive(Timer.publish(every: 1, on: .main, in: .common).autoconnect()) { _ in
            if isTracking {
                updateMetrics()
            }
        }
    }


    private func toggleTracking() {
        isTracking.toggle()
        if isTracking {
            // Notify phone that workout started
            connector.sendMessage([
                "event": "workoutStarted",
                "timestamp": Date().timeIntervalSince1970
            ])
        } else {
            // Send final summary to phone
            do {
                try connector.updateApplicationContext([
                    "workoutComplete": true,
                    "totalCalories": calories,
                    "avgHeartRate": heartRate,
                    "endTime": Date().timeIntervalSince1970
                ])
            } catch {
                print("Failed to update context: \(error)")
            }
        }
    }


    private func updateMetrics() {
        // Simulate heart rate (in real app, use HealthKit)
        heartRate = Double.random(in: 120...160)
        calories += Double.random(in: 0.1...0.3)


        // Send real-time updates if phone is reachable
        if connector.isReachable {
            connector.sendMessage([
                "heartRate": heartRate,
                "calories": calories,
                "timestamp": Date().timeIntervalSince1970
            ])
        }
    }
}

Exemple 2 : Télécommande de maison intelligente

Section intitulée « Exemple 2 : Télécommande de maison intelligente »

Contrôler les appareils de maison intelligente à partir de votre montre.

import SwiftUI
import CapgoWatchSDK


struct SmartHomeView: View {
    @ObservedObject var connector = WatchConnector.shared
    @State private var devices: [SmartDevice] = []
    @State private var isLoading = false


    var body: some View {
        NavigationView {
            Group {
                if isLoading {
                    ProgressView("Loading...")
                } else if devices.isEmpty {
                    Text("No devices")
                        .foregroundColor(.secondary)
                } else {
                    List(devices) { device in
                        DeviceRow(device: device, onToggle: { toggleDevice(device) })
                    }
                }
            }
            .navigationTitle("Home")
            .toolbar {
                Button(action: refreshDevices) {
                    Image(systemName: "arrow.clockwise")
                }
            }
        }
        .onAppear {
            refreshDevices()
        }
        .onChange(of: connector.lastMessage) { message in
            handleMessage(message)
        }
    }


    private func refreshDevices() {
        guard connector.isReachable else {
            // Load from cached context
            loadFromContext()
            return
        }


        isLoading = true
        connector.sendMessage(["action": "getDevices"]) { reply in
            DispatchQueue.main.async {
                isLoading = false
                if let deviceList = reply["devices"] as? [[String: Any]] {
                    devices = deviceList.compactMap { SmartDevice(from: $0) }
                }
            }
        }
    }


    private func toggleDevice(_ device: SmartDevice) {
        connector.sendMessage([
            "action": "toggleDevice",
            "deviceId": device.id,
            "newState": !device.isOn
        ]) { reply in
            DispatchQueue.main.async {
                if reply["success"] as? Bool == true {
                    // Update local state
                    if let index = devices.firstIndex(where: { $0.id == device.id }) {
                        devices[index].isOn.toggle()
                    }
                }
            }
        }
    }


    private func loadFromContext() {
        if let deviceList = connector.applicationContext["devices"] as? [[String: Any]] {
            devices = deviceList.compactMap { SmartDevice(from: $0) }
        }
    }


    private func handleMessage(_ message: [String: Any]) {
        // Handle push updates from phone
        if let update = message["deviceUpdate"] as? [String: Any],
           let deviceId = update["id"] as? String,
           let isOn = update["isOn"] as? Bool {
            if let index = devices.firstIndex(where: { $0.id == deviceId }) {
                devices[index].isOn = isOn
            }
        }
    }
}


struct SmartDevice: Identifiable {
    let id: String
    let name: String
    let type: String
    var isOn: Bool


    init?(from dict: [String: Any]) {
        guard let id = dict["id"] as? String,
              let name = dict["name"] as? String,
              let type = dict["type"] as? String,
              let isOn = dict["isOn"] as? Bool else {
            return nil
        }
        self.id = id
        self.name = name
        self.type = type
        self.isOn = isOn
    }
}


struct DeviceRow: View {
    let device: SmartDevice
    let onToggle: () -> Void


    var body: some View {
        HStack {
            Image(systemName: iconName)
                .foregroundColor(device.isOn ? .yellow : .gray)
            Text(device.name)
            Spacer()
            Toggle("", isOn: .constant(device.isOn))
                .labelsHidden()
                .onTapGesture { onToggle() }
        }
    }


    var iconName: String {
        switch device.type {
        case "light": return device.isOn ? "lightbulb.fill" : "lightbulb"
        case "thermostat": return "thermometer"
        case "lock": return device.isOn ? "lock.fill" : "lock.open"
        default: return "power"
        }
    }
}

Exemple 3 : Centre de notifications

Section intitulée « Exemple 3 : Centre de notifications »

Envoyer des notifications personnalisées à l'horloge.

import { CapgoWatch } from '@capgo/capacitor-watch';


class NotificationService {
  async sendNotification(title: string, body: string, data?: any) {
    const info = await CapgoWatch.getInfo();


    if (info.isReachable) {
      // Send immediately if watch is reachable
      await CapgoWatch.sendMessage({
        data: {
          type: 'notification',
          title,
          body,
          data,
          timestamp: Date.now()
        }
      });
    } else {
      // Queue for later delivery
      await CapgoWatch.transferUserInfo({
        userInfo: {
          type: 'notification',
          title,
          body,
          data,
          timestamp: Date.now()
        }
      });
    }
  }


  async sendUrgentAlert(message: string) {
    // Use sendMessage for urgent alerts (requires watch to be reachable)
    const info = await CapgoWatch.getInfo();


    if (!info.isReachable) {
      console.warn('Watch not reachable for urgent alert');
      return false;
    }


    await CapgoWatch.sendMessage({
      data: {
        type: 'urgentAlert',
        message,
        haptic: 'warning',
        timestamp: Date.now()
      }
    });


    return true;
  }
}


// Usage
const notifications = new NotificationService();


// Regular notification (queued if watch unavailable)
await notifications.sendNotification(
  'Order Update',
  'Your order has shipped!',
  { orderId: '12345' }
);


// Urgent alert (requires watch to be active)
const sent = await notifications.sendUrgentAlert('Security alert: New login detected');

Exemple 4 : Service de synchronisation de données

Section intitulée « Exemple 4 : Service de synchronisation de données »

Maintenir les données synchronisées entre téléphone et montre.

import { CapgoWatch } from '@capgo/capacitor-watch';


class DataSyncService {
  private syncQueue: any[] = [];
  private isSyncing = false;


  async initialize() {
    // Listen for sync requests from watch
    await CapgoWatch.addListener('messageReceivedWithReply', async (event) => {
      if (event.message.action === 'sync') {
        const data = await this.getDataForSync(event.message.lastSyncTime);
        await CapgoWatch.replyToMessage({
          callbackId: event.callbackId,
          data: { items: data, syncTime: Date.now() }
        });
      }
    });


    // Listen for data from watch
    await CapgoWatch.addListener('userInfoReceived', (event) => {
      this.handleWatchData(event.userInfo);
    });


    // Monitor connectivity for sync opportunities
    await CapgoWatch.addListener('reachabilityChanged', (event) => {
      if (event.isReachable && this.syncQueue.length > 0) {
        this.processSyncQueue();
      }
    });
  }


  // Push important data to watch (guaranteed delivery)
  async pushToWatch(data: any) {
    await CapgoWatch.transferUserInfo({
      userInfo: {
        type: 'dataUpdate',
        data,
        timestamp: Date.now()
      }
    });
  }


  // Update shared state (latest value only)
  async updateSharedState(state: any) {
    await CapgoWatch.updateApplicationContext({
      context: {
        ...state,
        lastUpdated: Date.now()
      }
    });
  }


  // Queue data for sync when watch becomes available
  queueForSync(data: any) {
    this.syncQueue.push(data);
    this.attemptSync();
  }


  private async attemptSync() {
    const info = await CapgoWatch.getInfo();
    if (info.isReachable) {
      await this.processSyncQueue();
    }
  }


  private async processSyncQueue() {
    if (this.isSyncing || this.syncQueue.length === 0) return;


    this.isSyncing = true;


    while (this.syncQueue.length > 0) {
      const item = this.syncQueue.shift();
      await CapgoWatch.transferUserInfo({ userInfo: item });
    }


    this.isSyncing = false;
  }


  private async getDataForSync(lastSyncTime: number): Promise<any[]> {
    // Return data modified since lastSyncTime
    // This would query your database/API
    return [];
  }


  private handleWatchData(data: any) {
    console.log('Received from watch:', data);
    // Process and save data from watch
  }
}

Meilleures Pratiques

Section intitulée « Meilleures Pratiques »

1. Choisissez la bonne méthode de transfert

Section intitulée « 1. Choisissez la bonne méthode de transfert »
MéthodeUtilisationLivraison
sendMessageInteractif, sensible à la duréeÉtat de l'application actuel
updateApplicationContextDernière valeur uniquementDonnées importantes
transferUserInfoFonctionne immédiatement (échoue si inatteignable)En attente, garanti

2. Gérer l'absence de connexion de manière gracieuse

Section intitulée “2. Gérer l'absence de connexion de manière gracieuse”
async function smartSend(data: any, important: boolean) {
  const info = await CapgoWatch.getInfo();


  if (info.isReachable) {
    // Send immediately
    await CapgoWatch.sendMessage({ data });
  } else if (important) {
    // Queue for later
    await CapgoWatch.transferUserInfo({ userInfo: data });
  } else {
    // Update context (will be available when watch opens app)
    await CapgoWatch.updateApplicationContext({ context: data });
  }
}

3. Réduire la taille des données

Section intitulée “3. Réduire la taille des données”
// Bad - sending large objects
connector.sendMessage(["user": fullUserObject])


// Good - send only what's needed
connector.sendMessage([
    "userId": user.id,
    "name": user.displayName,
    "avatarUrl": user.avatarUrl
])

4. Utiliser les haptiques de manière appropriée

Section intitulée “4. Utiliser les haptiques de manière appropriée”
import WatchKit


// Success feedback
WKInterfaceDevice.current().play(.success)


// Failure feedback
WKInterfaceDevice.current().play(.failure)


// Navigation feedback
WKInterfaceDevice.current().play(.click)


// Notification
WKInterfaceDevice.current().play(.notification)

5. Cacher sur l'horloge

Section intitulée “5. Cacher sur l'horloge”
class DataCache {
    private let defaults = UserDefaults.standard


    func save(_ data: [String: Any], forKey key: String) {
        if let encoded = try? JSONSerialization.data(withJSONObject: data) {
            defaults.set(encoded, forKey: key)
        }
    }


    func load(forKey key: String) -> [String: Any]? {
        guard let data = defaults.data(forKey: key),
              let dict = try? JSONSerialization.jsonObject(with: data) as? [String: Any] else {
            return nil
        }
        return dict
    }
}

Étapes suivantes

Section intitulée « Étapes suivantes »