{"id":57,"date":"2026-01-04T18:15:34","date_gmt":"2026-01-04T18:15:34","guid":{"rendered":"https:\/\/meumundomobile.com.br\/?p=57"},"modified":"2026-01-04T18:56:03","modified_gmt":"2026-01-04T18:56:03","slug":"realtime-database-firebase-kmp","status":"publish","type":"post","link":"https:\/\/meumundomobile.com.br\/?p=57","title":{"rendered":"How to implements Realtime Database Firebase in KMP"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

This post is very similar to previous; how to implements remote config.
If you arrived here I hope this post will be useful.
First I will be show how to comunicate with Realtime Database – Firebase; <\/p>\n\n\n\n

This communication will works with inputs e outputs, other words reading and writing.<\/p>\n\n\n\n

I hope you have minimal know em native platforms (Android and iOS); remember this post I don’t use libs what will be facilitate to implementation Firebase Realtime Database.<\/p>\n\n\n\n

Let’s go; I\u00b4m going this post in three parts.<\/p>\n\n\n\n

– Native implementation (basic configs)
– KMP implementation
– Native implementation (iOS configs)<\/p>\n\n\n\n

Native implementation<\/h3>\n\n\n\n

For the natives platform follow the documentation official.<\/p>\n\n\n\n

https:\/\/firebase.google.com\/docs\/remote-config\/get-started<\/a>

Also lets go use dependency injection in this project.
The dependency injection used is Koin; follow the official documentation.<\/p>\n\n\n\n

https:\/\/insert-koin.io\/docs\/reference\/koin-mp\/kmp<\/a><\/p>\n\n\n\n

KMP implementation<\/h3>\n\n\n\n

Let’s remember how to organize the project KMP.

-Project
-Project\/ComposeApp
-Project\/ComposeApp\/androidMain
-Project\/ComposeApp\/commonMain
-Project\/ComposeApp\/iosMain
-Project\/iosApp\/iosApp<\/strong><\/p>\n\n\n\n

These are the main classes to be created in the project.<\/h3>\n\n\n\n

-Project\/ComposeApp\/androidMain<\/strong>\/pack\/FirebaseDataBaseRealTimeBridge.android.kt
-Project\/ComposeApp\/androidMain<\/strong>\/pack\/KoinInit.kt
-Project\/ComposeApp\/androidMain<\/strong>\/pack\/KoinModuleAndroid.kt<\/p>\n\n\n\n

-Project\/ComposeApp\/commonMain\/<\/strong>pack\/FirebaseDataBaseRealTimeBridge.kt
-Project\/ComposeApp\/commonMain<\/strong>\/pack\/FirebaseRealTimeDataBase.kt
-Project\/ComposeApp\/commonMain\/<\/strong>pack\/KoinInit.kt
-Project\/ComposeApp\/commonMain\/<\/strong>pack\/KoinModule.kt
-Project\/ComposeApp\/commonMain\/<\/strong>pack\/FirebaseRealTimeDataBaseScreen.kt
-Project\/ComposeApp\/commonMain\/<\/strong>pack\/FirebaseRealTimeDataBaseViewModel.kt

-Project\/ComposeApp\/androidMain<\/strong>\/pack\/FirebaseDataBaseRealTimeBridge.ios.kt
-Project\/ComposeApp\/androidMain<\/strong>\/pack\/KoinInit.kt
-Project\/ComposeApp\/androidMain<\/strong>\/pack\/KoinModuleAndroid.kt<\/p>\n\n\n\n

-Project\/iosApp\/iosApp<\/strong>\/SwiftFirebaseDataBaseRealTime.swift<\/p>\n\n\n\n

We will create the following class inside “Project\/ComposeApp\/androidMain”<\/strong>:<\/p>\n\n\n\n

Each with their own responsibility. This class will do communication with Firebase.
Which later will do implements by ViewModel.<\/p>\n\n\n\n

<\/circle><\/circle><\/circle><\/g><\/svg><\/span>