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React Native combines smoothly with components written in Swift, Java, or Objective-C.
Give it a try - it’s a magical experience.
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With Hot Reloading, you can even run new code while retaining your application state. Instead of recompiling, you can reload your app instantly. React Native lets you build your app faster. Instead of using Swift, Kotlin or Java, you are putting those building blocks together using JavaScript and React.
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The apps you are building with React Native aren’t mobile web apps because React Native uses the same fundamental UI building blocks as regular iOS and Android apps. React Native also represents an improvement over normal mobile development in two other areas: the developer experience and cross-platform development potential. The major difference between React Native and React in the browser is that React Native does this by leveraging the UI libraries of its host platform, rather than using HTML and CSS markup.įor developers accustomed to working on the Web with React, this means you can write mobile apps with the performance and look and feel of a native application while using familiar tools.
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The update cycle in React Native is the same as in React: when props or state change, React Native re-renders the views. Additionally, React works separately from the main UI thread, so your application can maintain high performance without sacrificing capability. In contrast, React Native actually translates your markup to real, native UI elements, leveraging existing means of rendering views on whatever platform you are working with. When these frameworks do try to mimic native UI elements, the results usually “feel” just a little off reverse-engineering all the fine details of things like animations takes an enormous amount of effort, and they can quickly become out of date. Additionally, they do not usually have access to the host platform’s set of native UI elements. While this approach can work, it also comes with drawbacks, especially around performance. Existing methods of writing mobile applications using combinations of JavaScript, HTML, and CSS typically render using webviews. The fact that React Native actually renders using its host platform’s standard rendering APIs enables it to stand out from most existing methods of cross-platform application development, like Cordova or Ionic. And yes: you can really use React Native to build production-ready mobile applications! Some example: Facebook, Palantir, and TaskRabbit are already using it in production for user-facing applications. The vast majority of the code we write will be cross-platform.
In this blog, we’ll cover both iOS and Android. React Native currently supports both iOS and Android and has the potential to expand to future platforms as well. React Native also exposes JavaScript interfaces for platform APIs, so your React Native apps can access platform features like the phone camera, or the user’s location. Thus, your application will render using real mobile UI components, not webviews, and will look and feel like any other mobile application. Then, under the hood, the React Native “bridge” invokes the native rendering APIs in Objective-C (for iOS) or Java (for Android). Similar to React for the Web, React Native applications are written using a mixture of JavaScript and XML markup, known as JSX. Plus, because most of the code you write can be shared between platforms, React Native makes it easy to simultaneously develop for both Android and iOS. In other words: web developers can now write mobile applications that look and feel truly “native,” all from the comfort of a JavaScript library that we already know and love. It’s based on React, Facebook’s JavaScript library for building user interfaces, but instead of targeting the browser, it targets mobile platforms. React Native is a JavaScript framework for writing real, natively rendering mobile applications for iOS and Android. It uses the same design as React, letting you compose a rich mobile UI using declarative components.
React Native lets you build mobile apps using only JavaScript.
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