de759b949e
Summary: Currently, if you load an animated gif using the standard `Image` component, it will not correctly respect the loop count property found in the Netscape App Extension block of the file. The issues are as follows: 1) If the App Extension isn't present, the animated gif loops indefinitely when it should not loop at all. 2) If the App Extension is present, the animated gif loops one less time than it should. The other issue is that once the looping completes, the image doesn't pause at the last frame but instead, loops back to the beginning of the animation e.g. frame 1. The fix does a few things: 1) If there is _no_ App Extension present, the image doesn't loop at all 2) If there _is_ an App Extension present, it loops the correct amount of times. For instance, if the loop count is 1, it means the gif should loop _once_ after it finishes playing, for a total of _two_ total loops. 3) Once the number of loops completes (assuming loop count isn't set to 0 which means infinite), the animation pauses on the last frame. Pull Request resolved: https://github.com/facebook/react-native/pull/21999 Differential Revision: D13287005 Pulled By: hramos fbshipit-source-id: f7210ad40e0e76c9ec454953b8a067569d3feaaa
React Native · 
Learn once, write anywhere: Build mobile apps with React.
See the official React Native website for an introduction to React Native.
Requirements
Supported target operating systems are >= Android 4.1 (API 16) and >= iOS 9.0. You may use Windows, macOS, or Linux as your development operating system, though building and running iOS apps is limited to macOS by default (tools like Expo can be used to get around this).
Building your first React Native app
Follow the Getting Started guide. The recommended way to install React Native depends on your project. Here you can find short guides for the most common scenarios:
How React Native works
React Native lets you build mobile apps using JavaScript. It uses the same design as React, letting you compose a rich mobile UI from declarative components.
With React Native, you don't build a "mobile web app", an "HTML5 app", or a "hybrid app". You build a real mobile app that's indistinguishable from an app built using Objective-C, Java, Kotlin, or Swift. React Native uses the same fundamental UI building blocks as regular iOS and Android apps. You just put those building blocks together using JavaScript and React.
React Native lets you build your app faster. Instead of recompiling, you can reload your app instantly. With hot reloading, you can even run new code while retaining your application state.
React Native combines smoothly with components written in Objective-C, Java, Kotlin, or Swift. It's simple to drop down to native code if you need to optimize a few aspects of your application. It's also easy to build part of your app in React Native, and part of your app using native code directly - that's how the Facebook app works.
The focus of React Native is on developer efficiency across all the platforms you care about - learn once, write anywhere. Facebook uses React Native in multiple production apps and will continue investing in React Native.
Full documentation
The full documentation for React Native can be found on our website. The source for the React Native documentation and website is hosted on a separate repo, https://github.com/facebook/react-native-website.
The React Native documentation only discusses the components, APIs, and topics specific to React Native (React on iOS and Android). For further documentation on the React API that is shared between React Native and React DOM, refer to the React documentation.
Join the React Native community
- Website: https://facebook.github.io/react-native
- Twitter: https://twitter.com/reactnative
- Discussion: https://discuss.reactjs.org/
See the CONTRIBUTING file for how to help out.
License
React Native is MIT licensed, as found in the LICENSE file.
React Native documentation is Creative Commons licensed, as found in the LICENSE-docs file.