Switching iOS Schemes not working

[theobouwman]

I followed: https://www.bigbinary.com/books/learn-react-native/handling-environment-specific-configurations-in-react-native

But when I switch from Staging scheme to Production scheme the .env is changes to the correct values. But when I log the variables they don't change. I tried removing the app and running metro with reset-cache but noting changes.

What can I do?

[theobouwman]

After I clean the build folder it works, what is that?

[justin-tay]

I seem to remember that this used to work.

The generated file in node_modules/react-native-config/ios/ReactNativeConfig/GeneratedDotEnv.m doesn't seem to get rebuilt automatically when the scheme gets changed. Cleaning will trigger a full rebuild so that works.

As a workaround in your Build Pre-actions script touching node_modules/react-native-config/ios/ReactNativeConfig/BuildDotenvConfig.rb seems to get the GeneratedDotEnv.m rebuilt properly.

As an example the script will now look similar to the one below
cp "${PROJECT_DIR}/../.env.staging" "${PROJECT_DIR}/../.env"
touch "${PROJECT_DIR}/../node_modules/react-native-config/ios/ReactNativeConfig/BuildDotenvConfig.rb"

[FrankyCTY]

@justin-tay It works for me, thanks :)
I did not copy to overwrite the .env, instead I do this:

echo ".env.production" > /tmp/envfile
touch "${PROJECT_DIR}/../node_modules/react-native-config/ios/ReactNativeConfig/BuildDotenvConfig.rb"

[theobouwman]

@justin-tay thanks. It works!

[FadiAboMsalam]

@justin-tay your solution also works thankss 🎉

[quiringk]

Just wanted to chime in here. I went through tutorials (https://www.youtube.com/watch?v=rhdOWYqc-Cg&t=1551s&ab_channel=JASACADAMY) and set up schemes + targets for my different envs. I was running into the issue where the .env would get overwritten successfully by the correct .env.[environment] file but the actual variables in the code weren't changing (when you used them). Occasionally they would change after multiple clear builds, etc but even then there was no consistency and most of the time that didn't work. Eventually I added everything I could find in the issues here + deleting the builds on the simulator so that they had to be reinstalled and all the sudden switching back and forth between schemes started working and changing the variables every time. So here is what my pre-actions script looks like for each environment:

cp "${PROJECT_DIR}/../.env.dev" "${PROJECT_DIR}/../.env"

echo “.env.dev” > /tmp/envfile

touch "${PROJECT_DIR}/../node_modules/react-native-config/ios/ReactNativeConfig/BuildDotenvConfig.rb"

[nppull]

Just wanted to chime in here. I went through tutorials (https://www.youtube.com/watch?v=rhdOWYqc-Cg&t=1551s&ab_channel=JASACADAMY) and set up schemes + targets for my different envs. I was running into the issue where the .env would get overwritten successfully by the correct .env.[environment] file but the actual variables in the code weren't changing (when you used them). Occasionally they would change after multiple clear builds, etc but even then there was no consistency and most of the time that didn't work. Eventually I added everything I could find in the issues here + deleting the builds on the simulator so that they had to be reinstalled and all the sudden switching back and forth between schemes started working and changing the variables every time. So here is what my pre-actions script looks like for each environment:

cp "${PROJECT_DIR}/../.env.dev" "${PROJECT_DIR}/../.env"

echo “.env.dev” > /tmp/envfile

touch "${PROJECT_DIR}/../node_modules/react-native-config/ios/ReactNativeConfig/BuildDotenvConfig.rb"

I'm having the same problem, can you share the podfile?

[nppull]

I get error with version 1.5.0
Downgrading to 1.4.6 fixes for me

[Brawl345]

As a workaround in your Build Pre-actinos script touching node_modules/react-native-config/ios/ReactNativeConfig/BuildDotenvConfig.rb seems to get the GeneratedDotEnv.m rebuilt properly.

As an example the script will now look similar to the one below cp "${PROJECT_DIR}/../.env.staging" "${PROJECT_DIR}/../.env" touch "${PROJECT_DIR}/../node_modules/react-native-config/ios/ReactNativeConfig/BuildDotenvConfig.rb"

THANK YOU!!! Wasted a lot of time trying to get this library to work, this was the ONLY thing that worked. No cleaning, reset-cache or any other magic necessary!

[JohnBonesOrtega]

Just wanted to chime in here. I went through tutorials (https://www.youtube.com/watch?v=rhdOWYqc-Cg&t=1551s&ab_channel=JASACADAMY) and set up schemes + targets for my different envs. I was running into the issue where the .env would get overwritten successfully by the correct .env.[environment] file but the actual variables in the code weren't changing (when you used them). Occasionally they would change after multiple clear builds, etc but even then there was no consistency and most of the time that didn't work. Eventually I added everything I could find in the issues here + deleting the builds on the simulator so that they had to be reinstalled and all the sudden switching back and forth between schemes started working and changing the variables every time. So here is what my pre-actions script looks like for each environment:

cp "${PROJECT_DIR}/../.env.dev" "${PROJECT_DIR}/../.env"

echo “.env.dev” > /tmp/envfile

touch "${PROJECT_DIR}/../node_modules/react-native-config/ios/ReactNativeConfig/BuildDotenvConfig.rb"

this worked for me. I am also working with multiple targets. thank you.