In LaunchYourApp we use Expo Notifications to send push notifications to users. This guide will show you how to set up and use Expo Notifications in your app. We already have it set up in the project, so you just need to follow the instructions below.

​

Import

import * as Notifications from 'expo-notifications';
import { registerForPushNotificationsAsync } from './path-to-notifications-utils';

​

Usage

​

Set Notification Handler

Configure how notifications should be handled when received:

Notifications.setNotificationHandler({
  handleNotification: async () => ({
    shouldShowAlert: true,
    shouldPlaySound: false,
    shouldSetBadge: false,
  }),
});

​

Register for Push Notifications

Register a user for push notifications and send the token to your server:

await registerForPushNotificationsAsync(userId);

​

API

​

registerForPushNotificationsAsync

async function registerForPushNotificationsAsync(userId: string): Promise<void>

Registers the device for push notifications and sends the Expo push token to your server.

​

Parameters

• userId: string - The unique identifier for the user.

​

Returns

• Promise<void> - A promise that resolves when the registration is complete.

​

Configuration

Testee

Make sure to replace 'your-project-id' with your actual Expo project ID when calling getExpoPushTokenAsync.

​

Server Integration

The registerForPushNotificationsAsync function sends a POST request to https://example.com/ with the user ID and Expo push token. Ensure your server is set up to receive and process this data.

​

Additional Resources

For more information on Expo notifications, refer to the official Expo documentation.