了解在使用 Expo Router 时如何使用根布局将全局提供程序添加到你的应用。

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传统的 React Native 项目由单个根组件构成，该组件通常在 ./App.js 或 ./index.js 中定义。此模式通常用于将 Redux、主题、样式等全局提供程序注入到应用中，并延迟渲染，直到加载资源和字体。

¥Traditional React Native projects are structured with a single root component that is often defined in ./App.js or ./index.js. This pattern is often used to inject global providers such as Redux, Themes, Styles, and so on, into the app, and to delay rendering until assets and fonts are loaded.

在 Expo Router 中，你可以使用根布局 (app/_layout.js) 添加可通过应用中的任何路由访问的提供程序。

¥In Expo Router, you can use the Root Layout (app/_layout.js) to add providers which can be accessed by any route in the app.

尝试将提供商的范围缩小到仅需要它们的路由。这将提高性能并减少重新渲染。

¥Try to reduce the scope of your providers to only the routes that need them. This will improve performance and cause fewer rerenders.