使用Capacitor/Cordova后台发送的基于用户的位置接收通知

npm install -g @capacitor/cli
npx cap init

npx cap add android
npx cap add ios
npm install @capacitor/geolocation @capacitor/notifications
npx cap sync

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>

<key>NSLocationWhenInUseUsageDescription</key>
<string>需要访问您的位置以发送相关通知</string>
<key>UIBackgroundModes</key>
<array>
    <string>location</string>
</array>

import { Geolocation } from '@capacitor/geolocation';
import { Notifications } from '@capacitor/notifications';

async function requestPermissions() {
  const geolocationPermissions = await Geolocation.requestPermissions();
  const notificationPermissions = await Notifications.requestPermissions();

  return geolocationPermissions.location && notificationPermissions.alert;
}

async function sendLocationBasedNotification() {
  const hasPermissions = await requestPermissions();
  if (!hasPermissions) {
    console.error('权限未授予');
    return;
  }

  const position = await Geolocation.getCurrentPosition();
  const { latitude, longitude } = position.coords;

  // 这里可以根据位置信息决定通知内容
  const message = `您当前的位置：纬度 ${latitude}, 经度 ${longitude}`;

  await Notifications.schedule({
    title: '位置通知',
    body: message,
    schedule: { at: new Date(Date.now() + 1000 * 10) }, // 10秒后发送
    badge: 1,
    sound: 'default',
  });
}

sendLocationBasedNotification();

npm install @capacitor-community/background-tasks
npx cap sync

import { BackgroundTask } from '@capacitor-community/background-tasks';
import { Geolocation } from '@capacitor/geolocation';
import { Notifications } from '@capacitor/notifications';

BackgroundTask.register();

async function startBackgroundTask() {
  await BackgroundTask.beforeExit(async () => {
    const hasPermissions = await requestPermissions();
    if (!hasPermissions) {
      console.error('权限未授予');
      return;
    }

    const position = await Geolocation.getCurrentPosition();
    const { latitude, longitude } = position.coords;

    const message = `后台位置更新：纬度 ${latitude}, 经度 ${longitude}`;
    await Notifications.schedule({
      title: '后台位置通知',
      body: message,
      schedule: { at: new Date(Date.now() + 1000 * 5) }, // 5秒后发送
      badge: 1,
      sound: 'default',
    });

    BackgroundTask.finish();
  });
}

startBackgroundTask();