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Questions tagged [expo]

Expo is an open-source and free platform that lets web developers build truly native apps that work across both iOS and Android by writing them once in just JavaScript. Use the Expo tag on questions about developing Expo projects and using the Expo development tools like XDE and exp.

Expo lets web developers build truly native and Web applications that work across iOS, Android and Web by writing them once in just JavaScript. It's an open source, free toolchain built on top of React Native.

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14725 questions
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Can't Test React Native Components in a Monorepo

Hi I'm trying to test React-Native components in a monorepo. I have an apps/mobile folder with a react-native app in it. I have a packages/ui with a simple button component that only uses react-native. I have a unit test in apps/mobile that imports…
Mike Fisher
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Google.useAuthRequest() from expo-auth-session successful but with authentication as null in response

I’m working with the expo managed workflow and was until now always using the expoClientId for the google log in and everything worked as expected, I got an access token back from the Google.useAuthRequest() response, inside…
Sir Vico
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npx expo run:android -> CommandError: No development build () for this project is installed

After running npx expo run:android once, the app was pushed to the device and the app started up. I then uninstalled the app on the device and then when I run npx expo run:android once again I get the error: CommandError: No development build…
abhi
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Impossible to update expo project inside Expo Go after switching to EAS Build

I have the need to run a project from Expo Go without being connected to PC. We are developing an app that require GPS and needs to be tested in open field. Before EAS became the standard to create projects i used expo build:android ad this created…
Steve
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React Native EXPO: change app's target API level to at least 31

I had built my app with eas build to get the .aab file to upload to the Google Play Console. And I am getting this error Your app currently targets API level 30 and must target at least API level 31 to ensure it is built on the latest APIs…
Ben Phung
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How to make ripple effect render on top of children views inside a Pressable component?

I have a FlatList with Pressable cards, inside each card i have children views with a background color that is different from the Pressable parent component, the pressable card is using the android_ripple effect, but the ripple won't render on top…
Enzo
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Wallet Android/iOS with EXPO

I'm looking for a lib that allows me to click: add wallet... to be automatically redirected to ios wallet or android wallet and add the ticket to the wallet. Is there any way to do this with expo?
Edson Junior
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`allowsMultipleSelection: true` throws error in expo-image-picker (expo SDK 46)

I have no problem selecting one image at a time with allowsMultipleSelection: false. But with allowsMultipleSelection: true, it throws an error. Note: I do have allowsEditing: false. What's happening I get this error:…
Nathalia
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Repeating expo local notification with dynamic/changing content data

I am having troubles setting up a weekly repeating local notification with dynamic/changing content data (with expo-notifications). Although I can create a scheduled notification for a specific day that repeats, but in my case with the…
dsds
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Need to adjust Slider's thumb position according to the Audio playback state within Expo app

My app for Android, iOS and Web is built upon Expo (React Native). I try to update Slider's thumb position (by changing the 'value' property) according to the audio playback progress. But this part of code works only once, at the start of the…
Vorvule
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How do I create an Expo app when it keeps giving this error?

Tried every possible step Reinstalled Node, NPM, Expo, etc. Cleaned Cache, verified it aswell. Please help or I would have to reinstall Ubuntu. faisal@PC:~$ expo init Migrate to using: › npx create-expo-app --template ✔ What would you like to…
Faisal
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Expo run:ios crashes on physical device, works everywhere else

I have a react native app that runs normally on simulators, builds fine and runs via testflight as expected. Whenever I try to run the app on my physical device (iPhone se2) one of two things happen. (most frequent) app builds with no errors and…
Stuart
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What is the relationship between local and global Expo CLI?

I'm a bit confused about the relationship between using the local cli and using the global one. Two kinds of confusion actually: When there's a command that both support like install what's the difference between running the local (with yarn expo…
orome
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Expo EAS build use of undeclared identifier 'Promise'

I am migrating my managed Expo React Native project to the EAS build ecosystem and am getting a strange error that I dont see anywhere else when googling around. The following error happens while running the Fastlane part of the build: ❌ …
Dustin Spengler
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I have to add multiple choice radio button in React native

Each item will have two radio buttons one is Yes and one is No. I have added the radio button with every item that comes from Flatlist (API). error is When I select one of the 8 radio button in front of the four item, only one of the 8 radio button…
ABDULLAH
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