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React Native changes to code have no affect on emulator app?


React Native changes to code have no affect on emulator app?

By : user2173388
Date : October 21 2020, 08:10 AM
To fix the issue you can do The problem was in rebuilding the app. It turns out that the command react-native run-android would build the app the first time it was run, but not any subsequent times. I've written a bash script with the following code to force a rebuild on an app every time it's run.
Put this in a bash script and run from the project directory
code :
sudo rm -rf android/ ios/ #Delete Android and ios folders first...
react-native eject
react-native upgrade //rebuilds android/ios folders
react-native link
react-native run-android &2> /dev/null
cd ~/Library/Android/sdk # Change this if it's not where you sdk is.
dir=$(pwd)
cd -
echo "sdk.dir=$dir" > android/local.properties
mkdir android/app/src/main/assets
react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
react-native run-android


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Not possible to Reload code in Android emulator (React Native)

Not possible to Reload code in Android emulator (React Native)


By : Kishore NKVV
Date : March 29 2020, 07:55 AM
With these it helps I have modified build.gradle in the project, after the finishing modifying it, it's not possible to reload code in the Android emulator using R-R or using cmd+M. Any ideas how to fix it? , I have found the solution:
code :
Clean project => Build => Edit Build Type => select Your Modules (app) => tab build Type => change Debugable to true
get qr code via npm start to run react-native app on Expo emulator

get qr code via npm start to run react-native app on Expo emulator


By : Yu-Pin Kao
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Try to create your app directly at the expo XDE,then get in your project folder and just run
code :
expo start
React Native Runtime Error: No native client found. Is Bugsnag React Native installed in your native code project?

React Native Runtime Error: No native client found. Is Bugsnag React Native installed in your native code project?


By : user3258306
Date : March 29 2020, 07:55 AM
it fixes the issue if you did react-native link bugsnag-react-native. Then you will need following changes if you are having this issue. I found the solution.
In you Android/settings.gradle put the include bugsnag-react-native under include ':app'
code :
include ':app'
include ':bugsnag-react-native'
project(':bugsnag-react-native').projectDir = new File(rootProject.projectDir, '../node_modules/bugsnag-react-native/android')
libz.tbd and 
libBugsnagReactNative.a
protected List<ReactPackage> getPackages() {
    return Arrays.<ReactPackage>asList(
new MainReactPackage(), BugsnagReactNative.getPackage()
Failed to launch emulator. Reason: Emulator exited before boot en React Native when react-native run-android

Failed to launch emulator. Reason: Emulator exited before boot en React Native when react-native run-android


By : Bosco Giovanni
Date : March 29 2020, 07:55 AM
wish of those help First start the android emulator on Android Studio, then execute the react-native run-android. If it doesn´t work go to android studio and do "Build -> Clean Project"
more than one device/emulator react native Error in react native start

more than one device/emulator react native Error in react native start


By : Rajatabha
Date : March 29 2020, 07:55 AM
I hope this helps you . Open your task manager and in the background processes finalize the adb process.
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