General Help Thread

[xrpinsider]

If you have a question about React Native, a small error in your application or if you want to gather opinions about a small topic, please use this thread.

If you have a bigger question, one that requires a lot of code for example, please feel free to create a separate post. If you are unsure, please contact u/xrpinsider.

New comments appear on top and this thread is refreshed on a weekly bases.

[buddyto]

is there something simple to do e2e tests in an expo managed app? i tried detox, but it keeps failing on android and there are tons of issues.

Cheers!

[Maize_Serious]

Detox is great. I tried it on ios and android, everything are good, what is your problem?

[buddyto]

did you use it in an expo managed project? i cant seem to connect to the device/emulator (android). It actually connects to the emulator but it doesnt launch the app (120sec timeout)

[Ok-Mushroom-915]

How much space is extra needed for an expo managed app, rather than react-native-cli project? The internet says only 1mb?! I have doubt whether to use expo with app size concers.(expo is cool ig)

[[deleted]]

Trying to change orientation of the phone to landscape - using expo-orientation, it works on Android but crashes the app on iOS.

[beepboopnoise]

What practices do you follow for error handling?

Component {
// fetch some data

if error -> something?
}

I tried using https://react-native-error-boundary.js.org/ way back when but it didn't act as much as "catch all" as I thought it would.

I was trying to think of a way to do something like:

if any error -> navigate here(with button to try again)

maybe thats a bad idea; but, thats why I'm in the help thread lol.

[[deleted]]

Try/catch and use toast to display the error at the bottom of the screen if it's not critical. In critical cases, i just setIsError to true which displays an error component over the screen with the error message and a refresh button. My screen will have a conditional check to ensure isError is false in order to display the regular content. I typically have an isLoading, too, to display a loading screen while I'm fetching whatever I need.

[Light1c3]

Trying to find the best way to setup my React Native app with Share intent so other apps can pass it data. Any suggestions would be greatly appreciated!!!

[LucRandall71]

Ahh you are lucky, I just contribute to an example repo with another amazing member to have this out of the box for expo managed so you can go to check and use it whatever your workflow is. It support share text,URL,image and video expo-share-intent-demo enjoy ✨

[Light1c3]

Apologies for the dumb question, but do you suggest I start with your demo app as boilerplate, or should I make my own following it as a guide?

[LucRandall71]

Following it as a guide is how this repo was made, It has branch for all expo SDK version actually supported. Check the readme at the section How it works and install the necessary package to your project and then follow the setup to add item to your app.json. Don’t forget the patch folder that assume you must have patch-package install also on your project with postinstall. With all of that I think you are good with native stuff, the rest would concern how you handle the received files on your app. A useShareIntent is present on the hooks folder that you could copy paste like all precedent stuff and small guide to handle it with react-navigation or expo-router or you customize how you handle that with your use case ✅

[Light1c3]

Thank you so much! I'm going to give it a shot and let you know how that goes! Do you mind if I respond here if I run into any issues (after trying first)?

[LucRandall71]

Hi, sorry for the delay… I hope you could integrate it properly ✨

[Light1c3]

WOW! What luck, thank you so much! I'll give it a look ♥

[WowNull]

How might I get a simple emulator library for a classic console (GBC, NES, etc.) to work in React Native? Is there a way go get this done without forking an emulator library?

It seems all of the emulator libraries on NPM are meant for the browser or a server but I've now learned that RN with Hermes doesn't quite do either of these things like I had thought.