使用 Firebase

安装 SDK

🌐 Install the SDK

在你创建了你的 Expo 项目 后，你可以使用以下命令安装 Firebase JS SDK：

🌐 After you have created your Expo project, you can install the Firebase JS SDK using the following command:

在你的项目中初始化 SDK

🌐 Initialize the SDK in your project

要在你的 Expo 项目中初始化 Firebase 实例，你必须创建一个配置对象，并将其传递给从 firebase/app 模块导入的 initializeApp() 方法。

🌐 To initialize the Firebase instance in your Expo project, you must create a config object and pass it to the initializeApp() method imported from the firebase/app module.

配置对象需要一个 API 密钥和其他唯一标识符。要获取这些值，你需要在 Firebase 项目中注册一个 Web 应用。你可以在 Firebase 文档 中找到这些说明。

🌐 The config object requires an API key and other unique identifiers. To obtain these values, you will have to register a web app in your Firebase project. You can find these instructions in the Firebase documentation.

在获取 API 密钥和其他标识符后，你可以通过在项目的根目录或存放配置文件的其他目录中创建一个新的 firebaseConfig.js 文件，然后粘贴以下代码片段。

🌐 After you have the API key and other identifiers, you can paste the following code snippet by creating a new firebaseConfig.js file in your project's root directory or any other directory where you keep the configuration files.

import { initializeApp } from 'firebase/app';

// Optionally import the services that you want to use
// import {...} from 'firebase/auth';
// import {...} from 'firebase/database';
// import {...} from 'firebase/firestore';
// import {...} from 'firebase/functions';
// import {...} from 'firebase/storage';

// Initialize Firebase
const firebaseConfig = {
  apiKey: 'api-key',
  authDomain: 'project-id.firebaseapp.com',
  databaseURL: 'https://project-id.firebaseio.com',
  projectId: 'project-id',
  storageBucket: 'project-id.appspot.com',
  messagingSenderId: 'sender-id',
  appId: 'app-id',
  measurementId: 'G-measurement-id',
};

const app = initializeApp(firebaseConfig);
// For more information on how to access Firebase in your project,
// see the Firebase documentation: https://firebase.google.com/docs/web/setup#access-firebase

使用 Firebase JS SDK 无需安装其他插件或进行额外配置。

🌐 You do not have to install other plugins or configurations to use Firebase JS SDK.

Firebase 版本 9 及以上提供了模块化 API。你可以直接从 firebase 包中导入你想使用的任何服务。例如，如果你想在项目中使用身份验证服务，你可以从 firebase/auth 包中导入 auth 模块。

🌐 Firebase version 9 and above provide a modular API. You can directly import any service you want to use from the firebase package. For example, if you want to use an authentication service in your project, you can import the auth module from the firebase/auth package.

信息 故障排除提示： 如果你遇到与 Firebase JS SDK 身份验证持久性相关的问题，请参阅设置持久性以在页面重新加载之间保持用户登录指南。

安装 expo-dev-client

🌐 Install expo-dev-client

由于 React Native Firebase 需要自定义原生代码，你需要在项目中安装 expo-dev-client 库。它允许使用 Config 插件 配置 React Native Firebase 所需的任何原生代码，而无需自己编写原生代码。

🌐 Since React Native Firebase requires custom native code, you need to install the expo-dev-client library in your project. It allows configuring any native code required by React Native Firebase using Config plugins without writing native code yourself.

要在你的项目中安装 expo-dev-client，请运行以下命令：

🌐 To install expo-dev-client, run the following command in your project:

安装 React Native Firebase

🌐 Install React Native Firebase

要使用 React Native Firebase，必须安装 @react-native-firebase/app 模块。该模块为所有其他模块提供核心功能。同时，它还通过配置插件在你的项目中添加自定义的本地代码。你可以使用以下命令进行安装：

🌐 To use React Native Firebase, it is necessary to install the @react-native-firebase/app module. This module provides the core functionality for all other modules. It also adds custom native code in your project using a config plugin. You can install it using the following command:

此时，你必须遵循 React Native Firebase 文档 中的说明，因为它涵盖了配置你的项目所需的所有步骤。

在你的项目中配置好 React Native Firebase 库后，请返回本指南，了解下一步如何运行你的项目。

🌐 Once you have configured the React Native Firebase library in your project, come back to this guide to learn how to run your project in the next step.

运行项目

🌐 Run the project

如果你正在使用 EAS Build，你可以在设备上创建并安装开发构建。在创建开发构建之前，你不需要在本地运行项目。 有关创建开发构建的更多信息，请参阅安装开发构建部分。

🌐 If you are using EAS Build, you can create and install a development build on your devices. You do not need to run the project locally before creating a development build. For more information on creating a development build, see the section on installing a development build.