Mateo Guzmán
d8cfd98070
Summary: As part of https://github.com/facebook/react-native/issues/34425, `objectFit` value of `'none'` needs to be supported for the Image component. In order to support this, a new value must also be added to support the equivalent in `resizeMode`. With this new value, the image will not be resized at all and keeping it in the initial position within a container (see in the screenshots). In this PR the support is added for both Fabric and Paper. ## Changelog: [GENERAL] [ADDED] - image `resizeMode` and `objectFit` support for `'none'`. Pull Request resolved: https://github.com/facebook/react-native/pull/47110 Test Plan: Using the `rn-tester`, there is a new image example for both `resizeMode` and `objectFit`. See below the results for both Android and iOS: <details> <summary>Fabric screenshots</summary> **Android:** | Resize Mode | Object Fit | | --------- | ---------- | |  |  | **iOS:** | Resize Mode | Object Fit | | --------- | ---------- | |  |  | </details> <details> <summary>Paper screenshots</summary> **Android:** | Resize Mode | Object Fit | | --------- | ---------- | |  |  | **iOS:** | Resize Mode | Object Fit | | --------- | ---------- | |  |  | </details> Reviewed By: fabriziocucci Differential Revision: D65420002 Pulled By: javache fbshipit-source-id: df3bc8fc931b88cde5fe51d89685bf327e30ed9f
RNTester
The RNTester showcases React Native views and modules.
Running this app
Before running the app, make sure you ran:
git clone https://github.com/facebook/react-native.git
cd react-native
yarn install
Running on iOS
If you are testing non-fabric component, search for and modify the fabric_enabled flag in RNTester's Podfile.
fabric_enabled = false
Also, if you previously built RNTester with fabric enabled, you might need to clean up the build files and Pods.
# Clean the generated files and folders to clean install RNTester
cd packages/rn-tester
yarn clean-ios
If you are still having a problem after doing the clean up (which can happen if you have built RNTester with older React Native versions where files were generated inside the react-native folder.), the best way might be to clean-install react-native (e.g. remove node_modules and yarn install). If after cleaning up, you are still having issues, you might also want to try RCT_NEW_ARCH_ENABLED=0 bundle exec pod install to disable the new architecture as it might be conflicting.
Both macOS and Xcode are required.
cd packages/rn-tester- Install Bundler:
gem install bundler. We use bundler to install the right version of CocoaPods locally. - Install Bundler and CocoaPods dependencies:
bundle install && bundle exec pod installoryarn setup-ios-hermes. In order to use JSC instead of Hermes engine, run:USE_HERMES=0 bundle exec pod installoryarn setup-ios-jscinstead. - Open the generated
RNTesterPods.xcworkspace. This is not checked in, as it is generated by CocoaPods. Do not openRNTesterPods.xcodeprojdirectly.
Note for Apple Silicon users
If you own a Mac laptop with Apple Silicon, you need to run some different commands to install and run cocoapods.
sudo arch -x86_64 gem install ffi: this installs theffipackage to load dynamically-linked libraries.arch -x86_64 pod install: this runpod installwith the right architecture.
Running on Android
You'll need to have all the prerequisites (SDK, NDK) for Building React Native installed.
You can build and run RN-Tester by using this command from the root of the repo:
yarn android
If you wish to use JSC instead you should invoke:
cd packages/rn-tester
yarn install-android-jsc
yarn start
Note
Building for the first time can take a while.
If you're using a physical device, run adb reverse tcp:8081 tcp:8081 to make sure the device can access Metro.
See Running on Device for additional instructions on using a physical device.
Building from source
Building the app on both iOS and Android means building the React Native framework from source. This way you're running the latest native and JS code the way you see it in your clone of the github repo.
This is different from apps created using react-native init which have a dependency on a specific version of React Native JS and native code, declared in a package.json file (and build.gradle for Android apps).