About this story

Overview

This project enables real-time SMS sending from a Laravel web application to an Android phone. The Laravel app broadcasts messages via WebSockets, and the Android app listens for these events, automatically sending SMS messages to specified numbers.

How It Works

1. Laravel Backend:

• Uses Laravel Reverb WebSockets to send real-time messages.
• Triggers an event containing the recipient's phone number and message.
• The WebSocket message is pushed to the connected Android device.
  
  

1. Android App:

• Listens for WebSocket events from the Laravel server.
• Parses the received message and extracts the phone number and SMS content.
• Sends the SMS using the device's default SMS functionality.
• Displays WebSocket connection status and the last 3 received messages in the app interface.
• Shows a system notification when an SMS is sent.
• Runs in background
  
  

Features

• Real-time WebSocket Communication: The app maintains a WebSocket connection with the Laravel server.

• Automated SMS Sending: The phone automatically sends an SMS when an event is received.

• Notification System: Users are notified when an SMS is sent.

• App UI Updates: The app displays the last three messages received via WebSocket.

• Persistent WebSocket Connection: Ensures the app stays connected in the background.
  
  

Technical Details

Laravel Setup

• Laravel 11 with Reverb WebSockets and Livewire.
• Event broadcasting to channel.
• Reverb WebSockets for real-time communication.

Android App

• Built with Kotlin in Android Studio.

• Uses OkHttp WebSocket client to maintain real-time connection.

• Runs as a foreground service to keep WebSocket alive.

• Uses BroadcastReceiver to update the UI with new messages.

• Implements runtime permissions for SMS sending.
  
  

System Requirements

• Laravel Server: PHP 8+, Laravel 11, Reverb WebSockets.

• Android Phone: Running Android 7+ with SMS capability.

• Internet Connection: Required for WebSocket communication.