Tom Underhill
25793eab56
Summary: Per discussion in https://github.com/react-native-community/releases/issues/186 the iOS `PlatformColor()` function is documented to use the semantic color names provided by the system. The referenced HIG documentation itself links to the `UIColor` documentation for semantic colors names. However, these names differ depending on if you are viewing the new Swift API docs or the Objective C docs. The current Objective C implementation in react-native assumes Objective C UIColor selector names that are suffixed 'Color'. But in Swift, Apple provides a Swift Extension on UIColor that makes aliases without the the 'Color' suffix and then makes the original selectors invalid presumably via `NS_UNAVAILABLE_SWIFT`. Since both selector names are valid depending on if you are using Objective C or Swift, let's make both forms be legal for `PlatformColor()`. In `RCTConvert.m` there is a dictionary of legal selector names. The code already supports the ability to have names be aliases of other selectors via a RCTSelector metadata key. The change adds code to the initialization of the map: it iterates over the keys in the map, which are all ObjC style UIColor selectors, and creates aliases by duplicating the entries, creating key names by stripping off the ObjC "Color" suffix, adds the RCTSelector key referring to the original and then appends these new Swift aliases to the map. ## Changelog [iOS] [Changed] - Allow iOS PlatformColor strings to be ObjC or Swift UIColor selectors Pull Request resolved: https://github.com/facebook/react-native/pull/28703 Test Plan: The PlatformColorExample.js is updated to use the new, shorter Swift selector names. There are still other examples in the same file and in unit tests that exercise the ObjC selector names. <img width="492" alt="PlatformColor" src="https://user-images.githubusercontent.com/30053638/79809089-89ab7d00-8324-11ea-8a9d-120b92edeedf.png"> Reviewed By: shergin Differential Revision: D21147404 Pulled By: TheSavior fbshipit-source-id: 0273ec855e426b3a7ba97a87645859e05bcd4126
React Native
Learn once, write anywhere:
Build mobile apps with React.
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React Native brings React's declarative UI framework to iOS and Android. With React Native, you use native UI controls and have full access to the native platform.
- Declarative. React makes it painless to create interactive UIs. Declarative views make your code more predictable and easier to debug.
- Component-Based. Build encapsulated components that manage their state, then compose them to make complex UIs.
- Developer Velocity. See local changes in seconds. Changes to JavaScript code can be live reloaded without rebuilding the native app.
- Portability. Reuse code across iOS, Android, and other platforms.
React Native is developed and supported by many companies and individual core contributors. Find out more in our ecosystem overview.
Contents
- Requirements
- Building your first React Native app
- Documentation
- Upgrading
- How to Contribute
- Code of Conduct
- License
📋 Requirements
React Native apps may target iOS 10.0 and Android 4.1 (API 16) or newer. You may use Windows, macOS, or Linux as your development operating system, though building and running iOS apps is limited to macOS. Tools like Expo can be used to work 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:
📖 Documentation
The full documentation for React Native can be found on our website.
The React Native documentation discusses components, APIs, and topics that are specific to React Native. For further documentation on the React API that is shared between React Native and React DOM, refer to the React documentation.
The source for the React Native documentation and website is hosted on a separate repo, @facebook/react-native-website.
🚀 Upgrading
Upgrading to new versions of React Native may give you access to more APIs, views, developer tools, and other goodies. See the Upgrading Guide for instructions.
React Native releases are discussed in the React Native Community, @react-native-community/react-native-releases.
👏 How to Contribute
The main purpose of this repository is to continue evolving React Native core. We want to make contributing to this project as easy and transparent as possible, and we are grateful to the community for contributing bug fixes and improvements. Read below to learn how you can take part in improving React Native.
Code of Conduct
Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read the full text so that you can understand what actions will and will not be tolerated.
Contributing Guide
Read our Contributing Guide to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to React Native.
Open Source Roadmap
You can learn more about our vision for React Native in the Roadmap.
Good First Issues
We have a list of good first issues that contain bugs which have a relatively limited scope. This is a great place to get started, gain experience, and get familiar with our contribution process.
Discussions
Larger discussions and proposals are discussed in @react-native-community/discussions-and-proposals.
📄 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.