mirror of
https://github.com/zhigang1992/react-native.git
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8b275a8b8d
Summary: @public This sync includes the following changes: - **[bf9fadfcf](https://github.com/facebook/react/commit/bf9fadfcf)**: [Hooks] Remove dispatch callbacks (#14037) //<Andrew Clark>// - **[8c67bbf18](https://github.com/facebook/react/commit/8c67bbf18)**: [scheduler] Deadline object -> shouldYield (#14025) //<Andrew Clark>// - **[e02086bfc](https://github.com/facebook/react/commit/e02086bfc)**: Warn about variable number of dependencies //<Andrew Clark>// - **[b92cdef64](https://github.com/facebook/react/commit/b92cdef64)**: Rename ReactHooks test suite //<Andrew Clark>// - **[6efbbe068](https://github.com/facebook/react/commit/6efbbe068)**: Prettier //<Sophie Alpert>// - **[504576306](https://github.com/facebook/react/commit/504576306)**: Swap order of function member in hook union types //<Andrew Clark>// - **[ddbfe2ed5](https://github.com/facebook/react/commit/ddbfe2ed5)**: Add ESLint rule for React Hooks //<Caleb Meredith>// - **[acb489963](https://github.com/facebook/react/commit/acb489963)**: Clear effect tags from a fiber that suspends in non-concurrent mode //<Andrew Clark>// - **[933b64710](https://github.com/facebook/react/commit/933b64710)**: Disable hook update callback (2nd arg to setState/dispatch) //<Andrew Clark>// - **[5fc84efac](https://github.com/facebook/react/commit/5fc84efac)**: Skip updating effect tag when skipping effect //<Sophie Alpert>// - **[9f34eb79a](https://github.com/facebook/react/commit/9f34eb79a)**: Add readContext to ReactPartialRendererHooks //<Alex Taylor>// - **[f7cb9d2b2](https://github.com/facebook/react/commit/f7cb9d2b2)**: Warn about useContext(Consumer|Provider) //<Dan Abramov>// - **[63cc7d2b3](https://github.com/facebook/react/commit/63cc7d2b3)**: Test useContext in pure, forwardRef, and PureComponent //<Dan Abramov>// - **[3a7c6da8d](https://github.com/facebook/react/commit/3a7c6da8d)**: Make effects actually work with memo //<Sophie Alpert>// - **[75a1c2e72](https://github.com/facebook/react/commit/75a1c2e72)**: The Lost Effect, chapter 3 //<Sophie Alpert>// - **[55a4b1f37](https://github.com/facebook/react/commit/55a4b1f37)**: memo supports Hooks //<Sophie Alpert>// - **[30aa4ad55](https://github.com/facebook/react/commit/30aa4ad55)**: The Lost Effect, chapter 2 //<Sophie Alpert>// - **[b772e0e26](https://github.com/facebook/react/commit/b772e0e26)**: "functional component" -> "function component" in hooks error messages //<Sebastian Markbåge>// - **[9e9e3970e](https://github.com/facebook/react/commit/9e9e3970e)**: Warn for Hook set-state on unmounted component //<Sophie Alpert>// - **[6514697f0](https://github.com/facebook/react/commit/6514697f0)**: Make sure deletions don't stop passive effects //<Sophie Alpert>// - **[dd019d34d](https://github.com/facebook/react/commit/dd019d34d)**: Add support for hooks to ReactDOMServer //<Alex Taylor>// - **[11d0781ee](https://github.com/facebook/react/commit/11d0781ee)**: Defer useEffect until after paint //<Andrew Clark>// - **[105f2de54](https://github.com/facebook/react/commit/105f2de54)**: Put hooks behind feature flag //<Andrew Clark>// - **[7bee9fbdd](https://github.com/facebook/react/commit/7bee9fbdd)**: Initial hooks implementation //<Andrew Clark>// - **[37c7fe0a5](https://github.com/facebook/react/commit/37c7fe0a5)**: Update createRoot warning message based on `enableStableConcurrentModeAPIs` (#14017) //<Rauno Freiberg>// - **[95f98a187](https://github.com/facebook/react/commit/95f98a187)**: fix typo (#13955) //<Joseph>// - **[e217f2f1a](https://github.com/facebook/react/commit/e217f2f1a)**: Updated comment for getEventModifierState (#13918) //<Patrick>// - **[275e76e83](https://github.com/facebook/react/commit/275e76e83)**: Enable stable concurrent APIs flag for 16.7 alpha (#13928) //<Brian Vaughn>// - **[8b97a9c36](https://github.com/facebook/react/commit/8b97a9c36)**: Update bundle sizes for 16.6.0 release //<Dan Abramov>// - **[6c29eabf7](https://github.com/facebook/react/commit/6c29eabf7)**: Updating package versions for release 16.6.0 //<Dan Abramov>// - **[d520b358d](https://github.com/facebook/react/commit/d520b358d)**: Revert all package versions to 16.5.2 state //<Dan Abramov>// - **[8f1ec7649](https://github.com/facebook/react/commit/8f1ec7649)**: Bump versions to beta.0 //<Dan Abramov>// - **[5055a83fa](https://github.com/facebook/react/commit/5055a83fa)**: Revert "Revert "Updating dependencies for react-noop-renderer"" //<Dan Abramov>// - **[3e8b4a5b8](https://github.com/facebook/react/commit/3e8b4a5b8)**: Revert "Updating dependencies for react-noop-renderer" //<Brian Vaughn>// - **[d8e03de4a](https://github.com/facebook/react/commit/d8e03de4a)**: [react-cache] Remove `cache` as argument to `read` (#13865) //<Andrew Clark>// - **[fefa1269e](https://github.com/facebook/react/commit/fefa1269e)**: Revert accidentally committed existence check (#13931) //<Andrew Clark>// - **[80a0c05ce](https://github.com/facebook/react/commit/80a0c05ce)**: Removed react-cache from the bundle list for now (#13930) //<BrianVaughn>// - **[915e4eab5](https://github.com/facebook/react/commit/915e4eab5)**: Add "unstable_" prefix to react-cache and jest-react (#13929) //<Brian Vaughn>// - **[cbbc2b6c4](https://github.com/facebook/react/commit/cbbc2b6c4)**: [Synchronous Suspense] Suspending a class outside concurrent mode (#13926) //<Andrew Clark>// - **[4947fcd76](https://github.com/facebook/react/commit/4947fcd76)**: Fix lint (#13923) //<Sebastian Markbåge>// - **[d75c69e0c](https://github.com/facebook/react/commit/d75c69e0c)**: Remove unstable_ prefix from Suspense (#13922) //<Sebastian Markbåge>// - **[c8ef2feda](https://github.com/facebook/react/commit/c8ef2feda)**: Remove redundant word "the" (#13919) //<John Lin>// - **[55444a6f4](https://github.com/facebook/react/commit/55444a6f4)**: Try rendering again if a timed out tree receives an update (#13921) //<Andrew Clark>// - **[04c4f2fce](https://github.com/facebook/react/commit/04c4f2fce)**: [reconciler] ReactFiberNewContext import maxSigned31BitInt twice (#13857) //<yongningfu>// - **[409e472fc](https://github.com/facebook/react/commit/409e472fc)**: Add flow types in ReactControlledComponent (#13669) //<Abdul Rauf>// - **[663835a43](https://github.com/facebook/react/commit/663835a43)**: Add flow types in getEventModifierState (#13909) //<Abdul Rauf>// - **[82710097f](https://github.com/facebook/react/commit/82710097f)**: Add flow types in getNodeForCharacterOffset (#13908) //<Abdul Rauf>// - **[b753f76a7](https://github.com/facebook/react/commit/b753f76a7)**: Fix failing async tests in Node 10 //<Andrew Clark>// - **[b5c0852fd](https://github.com/facebook/react/commit/b5c0852fd)**: Bump version to 16.6.0-beta.0 (#13906) //<Dan Abramov>// - **[769b1f270](https://github.com/facebook/react/commit/769b1f270)**: pure -> memo (#13905) //<Dan Abramov>// - **[8ecd4bd4f](https://github.com/facebook/react/commit/8ecd4bd4f)**: Add support for React.pure in ReactDOMServer (#13855) //<Alex Taylor>// - **[15b11d23f](https://github.com/facebook/react/commit/15b11d23f)**: Allow arbitrary types to be wrapped in pure (#13903) //<Sebastian Markbåge>// - **[e770af7a3](https://github.com/facebook/react/commit/e770af7a3)**: Add back accidentally deleted `break` to prevent fallthrough //<Andrew Clark>// - **[95a313ec0](https://github.com/facebook/react/commit/95a313ec0)**: Unfork Lazy Component Branches (#13902) //<Sebastian Markbåge>// - **[e16cdd5b1](https://github.com/facebook/react/commit/e16cdd5b1)**: Always bail out timed out children even if they receive an update (#13901) //<Andrew Clark>// - **[7268d97d2](https://github.com/facebook/react/commit/7268d97d2)**: Centralize props memoization (#13900) //<Sebastian Markbåge>// - **[0fc044679](https://github.com/facebook/react/commit/0fc044679)**: Class component can suspend without losing state outside concurrent mode (#13899) //<Andrew Clark>// - **[36db53822](https://github.com/facebook/react/commit/36db53822)**: Bugfix for #13886 (#13896) //<Andrew Clark>// - **[6938dcaac](https://github.com/facebook/react/commit/6938dcaac)**: SSR support for class contextType (#13889) //<Sebastian Markbåge>// - **[fa65c58e1](https://github.com/facebook/react/commit/fa65c58e1)**: Add readContext to SSR (#13888) //<Sebastian Markbåge>// - **[d9a3cc070](https://github.com/facebook/react/commit/d9a3cc070)**: React.lazy constructor must return result of a dynamic import (#13886) //<Andrew Clark>// - **[d9659e499](https://github.com/facebook/react/commit/d9659e499)**: Lazy components must use React.lazy (#13885) //<Andrew Clark>// - **[0648ca618](https://github.com/facebook/react/commit/0648ca618)**: Revert "React.pure automatically forwards ref" (#13887) //<Sophie Alpert>// - **[4dd772ac1](https://github.com/facebook/react/commit/4dd772ac1)**: Prettier :( //<Andrew Clark>// - **[98bab66c3](https://github.com/facebook/react/commit/98bab66c3)**: Fix lint //<Andrew Clark>// - **[8ced545e3](https://github.com/facebook/react/commit/8ced545e3)**: Suspense component does not capture if `fallback` is not defined (#13879) //<Andrew Clark>// - **[b738ced47](https://github.com/facebook/react/commit/b738ced47)**: Remove render prop option from Suspense (#13880) //<Andrew Clark>// - **[55b827942](https://github.com/facebook/react/commit/55b827942)**: Strict mode and default mode should have same Suspense semantics (#13882) //<Andrew Clark>// - **[dac9202a9](https://github.com/facebook/react/commit/dac9202a9)**: Hide timed-out children instead of deleting them so their state ispreserved (#13823) //<Andrew Clark>// - **[4f0bd4590](https://github.com/facebook/react/commit/4f0bd4590)**: Replacement of old links, by the new ones of the documentation. (#13871) //<Pablo Javier D. A>// - **[7685b55d2](https://github.com/facebook/react/commit/7685b55d2)**: Remove unstable_read() in favor of direct dispatcher call (#13861)//<Dan Abramov>// - **[21a79a1d9](https://github.com/facebook/react/commit/21a79a1d9)**: [schedule] Call ensureHostCallbackIsScheduled without args (#13852) //<Trivikram Kamat>// - **[9ea4bc6ed](https://github.com/facebook/react/commit/9ea4bc6ed)**: Fix false positive context warning when using an old React (#13850) //<Dan Abramov>// Release Notes: [GENERAL] [FEATURE] [React] - React sync for revisions 4773fdf...bf9fadf Reviewed By: arcanis Differential Revision: D12850275 fbshipit-source-id: b6d5c61a044c970c04c2ff3370fa77222afd1eb1
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.