Beispiele und Anwendungsfälle

Diese Anleitung bietet praktische Beispiele für gängige Watch-App-Muster unter Verwendung von @capgo/capacitor-watch. TypeScript auf dem Telefon funktioniert für beide iOS und Android; die unten gezeigten Watch-UI-Beispiele verwenden SwiftUI (Apple Watch). Spiegeln Sie die gleichen Payloads auf Wear OS mit den Datenlayer-Pfade aus der Anleitung zur Einrichtung von Wear OS wider.

Beispiel 1: Gesundheits- und Fitness-Tracker

Synchronisiere Workout-Daten zwischen Uhr und Telefon.

Uhr (SwiftUI)

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
            ])
        }
    }
}

Telefon (Capacitor)

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

class WorkoutTracker {
  private heartRateData: number[] = [];
  private totalCalories = 0;

  async initialize() {
    // Listen for real-time workout updates
    await CapgoWatch.addListener('messageReceived', (event) => {
      const { heartRate, calories, timestamp } = event.message;

      if (heartRate) {
        this.heartRateData.push(heartRate);
        this.updateUI(heartRate, calories);
      }

      if (event.message.event === 'workoutStarted') {
        this.onWorkoutStarted(timestamp);
      }
    });

    // Listen for workout completion via context
    await CapgoWatch.addListener('applicationContextReceived', (event) => {
      if (event.context.workoutComplete) {
        this.onWorkoutComplete(event.context);
      }
    });
  }

  private onWorkoutStarted(timestamp: number) {
    console.log('Workout started at:', new Date(timestamp * 1000));
    this.heartRateData = [];
    this.totalCalories = 0;
  }

  private onWorkoutComplete(data: any) {
    const avgHeartRate = data.avgHeartRate;
    const totalCalories = data.totalCalories;

    // Save to your backend
    this.saveWorkout({
      avgHeartRate,
      totalCalories,
      endTime: data.endTime,
      heartRateHistory: this.heartRateData
    });
  }

  private updateUI(heartRate: number, calories: number) {
    // Update your app's UI
    document.getElementById('heart-rate')!.textContent = `${Math.round(heartRate)} BPM`;
    document.getElementById('calories')!.textContent = `${Math.round(calories)} cal`;
  }

  private async saveWorkout(data: any) {
    // Save to your backend
    console.log('Saving workout:', data);
  }
}

const tracker = new WorkoutTracker();
tracker.initialize();

Beispiel 2: Smart Home Fernbedienung

Steueren Sie Smart-Home-Geräte von Ihrer Uhr.

Uhr (SwiftUI)

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"
        }
    }
}

Telefon (Capacitor)

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

interface SmartDevice {
  id: string;
  name: string;
  type: string;
  isOn: boolean;
}

class SmartHomeController {
  private devices: SmartDevice[] = [];

  async initialize() {
    // Handle requests from watch
    await CapgoWatch.addListener('messageReceivedWithReply', async (event) => {
      const { action, deviceId, newState } = event.message;

      let response: any = { success: false };

      switch (action) {
        case 'getDevices':
          response = { devices: this.devices };
          break;

        case 'toggleDevice':
          const success = await this.toggleDevice(deviceId, newState);
          response = { success };
          break;
      }

      await CapgoWatch.replyToMessage({
        callbackId: event.callbackId,
        data: response
      });
    });

    // Load initial devices
    await this.loadDevices();

    // Keep watch updated with device states
    await this.syncDevicesToWatch();
  }

  private async loadDevices() {
    // Load from your smart home API
    this.devices = [
      { id: '1', name: 'Living Room', type: 'light', isOn: true },
      { id: '2', name: 'Bedroom', type: 'light', isOn: false },
      { id: '3', name: 'Thermostat', type: 'thermostat', isOn: true },
      { id: '4', name: 'Front Door', type: 'lock', isOn: true }
    ];
  }

  private async toggleDevice(deviceId: string, newState: boolean): Promise<boolean> {
    try {
      // Call your smart home API
      const device = this.devices.find(d => d.id === deviceId);
      if (device) {
        device.isOn = newState;

        // Push update to watch
        const info = await CapgoWatch.getInfo();
        if (info.isReachable) {
          await CapgoWatch.sendMessage({
            data: {
              deviceUpdate: { id: deviceId, isOn: newState }
            }
          });
        }
        return true;
      }
      return false;
    } catch (error) {
      console.error('Failed to toggle device:', error);
      return false;
    }
  }

  private async syncDevicesToWatch() {
    // Update application context for offline access
    await CapgoWatch.updateApplicationContext({
      context: { devices: this.devices }
    });
  }

  // Call this when devices change on the phone
  async onDeviceStateChanged(deviceId: string, isOn: boolean) {
    const device = this.devices.find(d => d.id === deviceId);
    if (device) {
      device.isOn = isOn;
      await this.syncDevicesToWatch();
    }
  }
}

const controller = new SmartHomeController();
controller.initialize();

Beispiel 3: Benachrichtigungscenter

Benachrichtige den Uhrenanzug individuell.

Telefon (Capacitor)

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');

Uhrwerk (SwiftUI)

import SwiftUI
import WatchKit
import CapgoWatchSDK

struct NotificationView: View {
    @ObservedObject var connector = WatchConnector.shared
    @State private var notifications: [WatchNotification] = []
    @State private var showAlert = false
    @State private var alertMessage = ""

    var body: some View {
        NavigationView {
            List(notifications) { notification in
                NotificationRow(notification: notification)
            }
            .navigationTitle("Notifications")
        }
        .onReceive(connector.$lastMessage) { message in
            handleMessage(message)
        }
        .alert("Alert", isPresented: $showAlert) {
            Button("OK") { }
        } message: {
            Text(alertMessage)
        }
    }

    private func handleMessage(_ message: [String: Any]) {
        guard let type = message["type"] as? String else { return }

        switch type {
        case "notification":
            let notification = WatchNotification(
                id: UUID().uuidString,
                title: message["title"] as? String ?? "",
                body: message["body"] as? String ?? "",
                timestamp: Date(timeIntervalSince1970: (message["timestamp"] as? Double ?? 0) / 1000)
            )
            notifications.insert(notification, at: 0)

            // Play haptic
            WKInterfaceDevice.current().play(.notification)

        case "urgentAlert":
            alertMessage = message["message"] as? String ?? "Alert"
            showAlert = true

            // Play strong haptic for urgent alerts
            if let hapticType = message["haptic"] as? String {
                switch hapticType {
                case "warning":
                    WKInterfaceDevice.current().play(.notification)
                    DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
                        WKInterfaceDevice.current().play(.notification)
                    }
                default:
                    WKInterfaceDevice.current().play(.notification)
                }
            }

        default:
            break
        }
    }
}

struct WatchNotification: Identifiable {
    let id: String
    let title: String
    let body: String
    let timestamp: Date
}

struct NotificationRow: View {
    let notification: WatchNotification

    var body: some View {
        VStack(alignment: .leading, spacing: 4) {
            Text(notification.title)
                .font(.headline)
            Text(notification.body)
                .font(.caption)
                .foregroundColor(.secondary)
            Text(notification.timestamp, style: .relative)
                .font(.caption2)
                .foregroundColor(.secondary)
        }
        .padding(.vertical, 4)
    }
}

Beispiel 4: Daten-Synchronisierungsdienst

Halten Sie die Daten zwischen Telefon und Uhrwerk synchron.

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
  }
}

Gute Praktiken

1. Wählen Sie die richtige Übertragungsmethode

Methode	Anwendungsfall	Delivery
sendMessage	Interaktiv, zeitabhängig	Unmittelbar (versagt, wenn unerreichbar)
updateApplicationContext	Interaktiv, zeitabhängig	Unmittelbar (fehlschlägt, wenn unerreichbar)
transferUserInfo	aktuelle Anwendungsstatus	Gewartet, garantiert

2. Offline-Fallstrategie umsetzen

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. Datenmenge minimieren

// 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
])

Abschnitt mit Titel “3. Datenmenge minimieren”

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)

Abschnitt mit Titel “4. Haptik angemessen einsetzen”

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
    }
}

Nächste Schritte

• Eine WatchOS-Anwendung erstellen - Apple Watch einrichten
• Eine Wear OS-Anwendung erstellen - Einrichten des Wear OS-Moduls
• API Referenz - Vollständige API-Dokumentation
• GitHub-Repository - Quelle code und Probleme

Weitermachen von Beispielen und Anwendungsfällen

Wenn Sie native Plugin-Arbeit verwenden Beispiele & Anwendungsfälle um native Plugin-Arbeit zu planen, verbinden Sie es mit Mit @capgo/capacitor-watch für die native Fähigkeit in Mit @capgo/capacitor-watch Capgo Plugin-Verzeichnis für den Produktworkflow in Capgo Plugin-Verzeichnis Capacitor Plugins von Capgo für die Implementierungsdetails in Capacitor Plugins von Capgo Hinzufügen oder Aktualisieren von Plugins für die Implementierungsdetails in Hinzufügen oder Aktualisieren von Plugins, und Ionic Enterprise Plugin Alternativen für das Produktworkflow in Ionic Enterprise Plugin Alternativen.