Ventsislav Dimitrov
0d1fb458ab
Summary: This fix aims to address the issue when bundling an Android app for release and getting the error exhibited in https://github.com/facebook/react-native/issues/28002 which I also encountered myself. The config was changed sometime in November 2019 (as part of https://github.com/facebook/react-native/issues/26940, commit https://github.com/facebook/react-native/commit/a3b08048674e324dbe1f0ca816f35607e9e06a2f) to be very opinionated when it comes to the use of `npx` which Gradle itself cannot find anyway (I have `npx` installed globally and it didn't pick it up). Another issue that the use of `npx` creates is that Gradle should only ever use the currently installed react-native cli rather than a (possibly) higher version which may not always have backward compatibility. The proposed change simply throws a more descriptive error rather than defaulting to a tool which may or may not exist on the machine, be it CI or a development environment. I've also modified the RNTester app to reflect the correct config implementation relative to the RNTester app itself. In real projects, the config inside `android/app/build.gradle` should look similar to the following snippet: ``` project.ext.react = [ cliPath: "$rootDir/../node_modules/react-native/cli.js", entryFile: "index.js" ]; ``` ## Changelog [Android] [Fixed] - Gradle release config Pull Request resolved: https://github.com/facebook/react-native/pull/28415 Test Plan: - [x] Successfully bundled an Android release build with correct config - [x] Works with RNTester app Reviewed By: mdvacca Differential Revision: D20714372 Pulled By: hramos fbshipit-source-id: 4d66139249c6f840582a71a48c64e6a6595f7af0
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
npm install
Running on iOS
Both macOS and Xcode are required.
- Install CocoaPods. We installing CocoaPods using Homebrew:
brew install cocoapods - Run
cd RNTester; pod install - Open the generated
RNTesterPods.xcworkspace. This is not checked in, as it is generated by CocoaPods. Do not openRNTesterPods.xcodeprojdirectly.
Running on Android
You'll need to have all the prerequisites (SDK, NDK) for Building React Native installed.
Start an Android emulator.
cd react-native
./gradlew :RNTester:android:app:installJscDebug
./scripts/packager.sh
Note: Building for the first time can take a while.
Open the RNTester app in your emulator.
If you want to use a physical device, run adb devices, then adb -s <device name> reverse tcp:8081 tcp:8081.
See Running on Device for additional instructions on using a physical device.
Running with Buck
Follow the same setup as running with gradle.
Install Buck from here.
Run the following commands from the react-native folder:
./gradlew :ReactAndroid:packageReactNdkLibsForBuck
buck fetch rntester
buck install -r rntester
./scripts/packager.sh
Note: The native libs are still built using gradle. Full build with buck is coming soon(tm).
Running Detox Tests on iOS
Install Detox from here.
To run the e2e tests locally, run the following commands from the react-native folder:
yarn build-ios-e2e
yarn test-ios-e2e
These are the equivalent of running:
detox build -c ios.sim.release
detox test -c ios.sim.release --cleanup
These build the app in Release mode, so the production code is bundled and included in the built app.
When developing E2E tests, you may want to run in development mode, so that changes to the production code show up immediately. To do this, run:
detox build -c ios.sim.debug
detox test -c ios.sim.debug
You will also need to have Metro running in another terminal. Note that if you've previously run the E2E tests in release mode, you may need to delete the RNTester/build folder before rerunning detox build.
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).