9e436d1439
Summary: This PR includes the same changes made in #16541, for addressing issues #11853/#15724. It adds upload progress updates for uploads with any request body type, and not just form-data. Additionally, this PR also includes a commit for fixing an `IllegalStateException` when a user's connection gets closed or times out (issues #10423/#11016). Since this exception was occurring within the progress updates logic, it started being thrown more frequently as a result of adding progress updates to all uploads, which was why the original PR was reverted. To test the upload progress updates, run the following JS to ensure events are now being dispatched: ``` const fileUri = 'file:///my_file.dat'; const url = 'http://my_post_url.com/'; const xhr = new XMLHttpRequest(); xhr.upload.onprogress = (event) => { console.log('progress: ' + event.loaded + ' / ' + event.total); } xhr.onreadystatechange = () => {if (xhr.readyState === 4) console.log('done');} console.log('start'); xhr.open('POST', url); // sending a file (wasn't sending progress) xhr.setRequestHeader('Content-Type', 'image/jpeg'); xhr.send({ uri: fileUri }); // sending a string (wasn't sending progress) xhr.setRequestHeader('Content-Type', 'text/plain'); xhr.send("some big string"); // sending form data (was already working) xhr.setRequestHeader('Content-Type', 'multipart/form-data'); const formData = new FormData(); formData.append('test', 'data'); xhr.send(formData); ``` To test the crash fix: In the RN Android project, before this change, set a breakpoint at `mRequestBody.writeTo(mBufferedSink);` of `ProgressRequestBody`, and wait a short while for a POST request with a non-null body to time out before resuming the app. Once resumed, if the connection was closed (the `closed` variable will be set to true in `RealBufferedSink`), an `IllegalStateException` will be thrown, which crashes the app. After the changes, an `IOException` will get thrown instead, which is already being properly handled. As mentioned above, includes the same changes as #16541, with an additional commit. [ANDROID] [BUGFIX] [XMLHttpRequest] - Added progress updates for all XMLHttpRequest upload types / fix crash on closed connection Previously, only form-data request bodies emitted upload progress updates. Now, other request body types will also emit updates. Also, Android will no longer crash on certain requests when user has a poor connection. Addresses issues: 11853/15724/10423/11016 Closes https://github.com/facebook/react-native/pull/17312 Differential Revision: D6712377 Pulled By: mdvacca fbshipit-source-id: bf5adc774703e7e66f7f16707600116f67201425
React Native · 
Learn once, write anywhere: Build mobile apps with React.
- Build native mobile apps using JavaScript and React: React Native lets you build mobile apps using only JavaScript. It uses the same design as React, letting you compose a rich mobile UI from declarative components.
- A React Native app is a real mobile app: 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, 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.
- Don't waste time recompiling: 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. Give it a try - it's a magical experience.
- Use native code when you need to: React Native combines smoothly with components written in Objective-C, Java, 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.
See the official React Native website for an introduction to React Native.
Supported operating systems are >= Android 4.1 (API 16) and >= iOS 8.0.
Getting Started
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 website’s documentation is divided into multiple sections.
- There are Guides that discuss topics like debugging, integrating with existing apps, and the gesture responder system.
- The Components section covers React components such as
ViewandButton. - The APIs section covers other libraries like Animated and StyleSheet that aren’t React components themselves.
- Finally, React Native provides a small number of Polyfills that offer web-like APIs.
Another great way to learn more about the components and APIs included with React Native is to read their source. Look under the Libraries/Components directory for components like ScrollView and TextInput, for example. The RNTester example is also here to demonstrate some of the ways to use these components. From the source you can get an accurate understanding of each component’s behavior and API.
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.
Upgrading
React Native is under active development. See the guide on upgrading React Native to keep your project up-to-date.
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Read our contributing guide to learn about our development process, how to propose bug fixes and improvements, and how to build and test your changes to React Native.
Beginner Friendly Bugs
We have a list of beginner friendly issues to help you get your feet wet in the React Native codebase and familiar with our contribution process. This is a great place to get started.
License
React Native is BSD licensed. We also provide an additional patent grant.
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