expo-firebase-database v2.0.0

expo-firebase-database

expo-firebase is still in RC and therefore subject to breaking changings. Be sure to run yarn upgrade and cd ios; pod install when upgrading.

expo-firebase-database provides a json based cloud data store that is synchronized in real-time.

Full documentation

Installation

Now, you need to install the package from npm registry.

npm install expo-firebase-database or yarn add expo-firebase-database

iOS

Cocoapods

If you're using Cocoapods, add the dependency to your Podfile:

pod 'EXFirebaseDatabase', path: '../node_modules/expo-firebase-database/ios'

and run pod install.

Android

1. Append the following lines to android/settings.gradle:

   include ':expo-firebase-database'
   project(':expo-firebase-database').projectDir = new File(rootProject.projectDir, '../node_modules/expo-firebase-database/android')

   and if not already included

   include ':expo-core'
   project(':expo-core').projectDir = new File(rootProject.projectDir, '../node_modules/expo-core/android')
   
   include ':expo-firebase-app'
   project(':expo-firebase-app').projectDir = new File(rootProject.projectDir, '../node_modules/expo-firebase-app/android')

2. Insert the following lines inside the dependencies block in android/app/build.gradle:

   api project(':expo-firebase-database')

   and if not already included

   api project(':expo-core')
   api project(':expo-firebase-app')

3. Include the module in your expo packages: ./android/app/src/main/java/host/exp/exponent/MainActivity.java

   /*
   * At the top of the file.
   * This is automatically imported with Android Studio, but if you are in any other editor you will need to manually import the module.
   */
   import expo.modules.firebase.app.FirebaseAppPackage; // This should be here for all Expo Firebase features.
   import expo.modules.firebase.database.FirebaseDatabasePackage;
   
   // Later in the file...
   
   @Override
   public List<Package> expoPackages() {
     // Here you can add your own packages.
     return Arrays.<Package>asList(
       new FirebaseAppPackage(), // This should be here for all Expo Firebase features.
       new FirebaseDatabasePackage() // Include this.
     );
   }

Usage

import React from 'react';
import { Button } from 'react-native';
import firebase from 'expo-firebase-app';
// API can be accessed with: firebase.database();

export default class PonyView extends React.Component {
  async componentDidMount() {
    const ref = firebase.database().ref('posts');
    ref.on('value', snapshot => {
      const val = snapshot.val();
      console.log(val);
    });
  }

  render() {
    return <View />;
  }
}