CODEWITHSUNDEEP
javascriptreact-native
Aaron Balthaser
Aaron Balthaser

Reputation: 2622

React Native not working after Xcode 10 update

I just upgraded to Xcode 10 and now after attempting to run my existing projects I was met with the below error. After searching I found the following issue when running react native init https://github.com/facebook/react-native/issues/21490. This solution also fixes my issue.

However I am wondering if anyone knows why my current project now require me to run the bundler as a separate instance. It's not the end of the world but it's certainly not the best experience.

Does anyone know of a way the get everything working as it was before without the need to run the following commands:

  1. rm -rf $TMPDIR/react-; rm -rf $TMPDIR/haste-; rm -rf $TMPDIR/metro-*; watchman watch-del-all
  2. react-native start --reset-cache
  3. (separate terminal) react-native run-ios

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Upvotes: 1

Views: 2061

Answers (2)

Andrew Schwartz
Andrew Schwartz

Reputation: 1

You may need to add an additional Build Phase to the xCode project after "Bundle React Native code and images"

Add a new build script by selecting the + sign on the top left and selecting "New Run Script Phase" then add the following

if nc -w 5 -z localhost 8081 ; then
if ! curl -s "http://localhost:8081/status" | grep -q "packager- 
status:running" ; then
echo "Port 8081 already in use, packager is either not running or not 
running correctly"
exit 2

fi
else
open "$SRCROOT/../node_modules/react- 
native/scripts/launchPackager.command" || echo "Can't start packager 
automatically"
fi

Upvotes: 0

Tareq El-Masri
Tareq El-Masri

Reputation: 2573

I had issues with the build after Xcode update, what I did to fix it is switch the Build System to Legacy Build System

From File > Workspace Settings

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Or by pressing on the hammer icon on the right of the status bar

Change the build system to Legacy Build System

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Also make sure that you still have the bundle script in Build Phases

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Tell me know if that works with you

Upvotes: 1

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