lbaldy
7d42106d4c
Summary: This fix solves a problem very well evaluated [here](https://github.com/Expensify/App/issues/2727) as well as this [one](https://github.com/facebook/react-native/issues/29290). The issue is that when the app goes to background, in landscape mode, the RCTDeviceInfo code triggers an orientation change event that did not physically happen. Due to that, we get swapped values returned when going back to the app. I debugged the react-native code, and to me it seems that react native publishes the orientation change event one extra time when switching the state of the app to 'inactive'. Here is what is happening: 1. iPad is in landscape. 2. We move the app to inactive state. 3. Native Code queues portrait orientation change (no such change happened physically), and immediately after it triggers landscape change (same as we had in point 1). 4. We restore the app to active state. 5. The app receives two queued orientation change events, one after another. 6. The quick transition between portrait and landscape happens even though it never went back to portrait. Fresh `react-native init` app repro case can be found here: https://github.com/lbaldy/issue-34014-repro Video presenting the issue (recorded while working on: https://github.com/Expensify/App/issues/2727 ): https://www.youtube.com/watch?v=nFDOml9M8w4 ## Changelog <!-- Help reviewers and the release process by writing your own changelog entry. For an example, see: https://github.com/facebook/react-native/wiki/Changelog --> [iOS] [Fixed] - Fix the way the orientation events are published, to avoid false publish on orientation change when app changes state to inactive Pull Request resolved: https://github.com/facebook/react-native/pull/34014 Test Plan: ### Test Preparation 1. Make sure you have a working version of E/App. 2. Open App/src/components/withWindowDimensions.js and update the constructor by changing this line: `this.onDimensionChange = _.debounce(this.onDimensionChange.bind(this), 100);` to `this.onDimensionChange = this.onDimensionChange.bind(this);` 3. Open the NewExpensify.xcodeproj in xCode. 4. Open the RCTDeviceInfo.mm file and replace it's contents with the file from this PR. 5. Select your device of choice (I suggest starting with iPad mini) and run the app though xCode. 6. From this point you can move to the test scenarios described below. ### iPad Mini tests: Reproduction + Fix test video (Test 1): https://youtu.be/jyzoNHLYHPo Reproduction + Fix test video (Test 2): https://youtu.be/CLimE-Fba-g **Test 1:** 1. Launch app in portrait, open chat - no sidebar visible. 7. Switch to landscape - sidebar shows. 8. Put app to background. 9. Put app back to foreground - make sure the side menu doesn't flicker. **Test 2:** 1. Launch app in portrait, open chat - no sidebar visible. 2. Switch to landscape - sidebar shows. 3. Put app to background. Switch orientation back to portrait. 4. Put app back to foreground - make sure the side menu hides again as it should be in portrait. ### iPad Pro tests: Reproduction + Fix test video (Test 3, Test 4): https://youtu.be/EJkUUQCiLRg iPad mini test 1 applies. Scenario 2 does not as the screen is too wide in both orientations and iPad pro shows sidebar always. **Test 3:** 1. launch the app. 2. Make sure you're in landscape mode. 3. See split screen with some other app. Make sure the side bar is visible. 4. Play with the size of the view, resize it a bit. When the view shrinks it should hide the sidebar, when it grows it should show it. 10. Move the app to background and back to foreground, please observe there are no flickers. **Test 4:** 1. Launch the app. 2. Make sure you're in landscape mode. 3. Make the multitasking view and make Expensify app a slide over app. 4. Move back to fullscreen/split screen. Make sure the menu is shown accordingly 5. Move the app to background and back to foreground, please observe there are no flickers. ### iPhone: Non reg with and without the fix video: https://youtu.be/kuv9in8vtbk Please perform standard smoke tests on transformation changes. Reviewed By: cipolleschi Differential Revision: D37239891 Pulled By: jacdebug fbshipit-source-id: e6090153820e921dcfb0d823e0377abd25225bdf
React Native
Learn once, write anywhere:
Build mobile apps with React.
Getting Started · Learn the Basics · Showcase · Contribute · Community · Support
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 11.0 and Android 5.0 (API 21) 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 this discussion repo.
👏 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.