expo

I am using Expo and the create-react-native app. I enjoy the live/hot reloading feature on my phone, but I'm wondering about custom fonts. https://docs.expo.io/versions/v17.0.0/guides/using-custom-fonts.html#loading-the-font-in-your-app The API for Expo only has directions to load them asynchronously. Do I have to do this on every component I want a custom font on? This seems like it would cause some unnecessary calls when I've already loaded it once. Is there a way to set the font as global or pass it via props once loaded? It seems like they suggest this approach via their last line in that

I'm using Expo to code my apps with React-Native. I can test my apps on Android devices running them from the Expo client app or building an APK and running it as standalone. On iOS I can run my app from the Expo client but I couldn't find a way to run the app as standalone. In this case, I would like to test the "native" facebook login functionality. Is it possible to run an app as standalone (without using the Expo client) on iOS? Note: I'm trying to avoid going through TestFlight for this, that will make my workflow painfully slow. I am using Mac OS. Run exp build:ios -t simulator to create

I am using expo FileSystem to download the pdf file. The API response lands into success function. However, I am not able to show the downloaded file to the user. The expected behaviour should be like we usually see notification icon on the status bar and on click on icon its opens your file. FileSystem.downloadAsync( 'https://bitcoin.org/bitcoin.pdf', FileSystem.documentDirectory + 'Stay_Overview.xlsx' ).then(({ uri }) => { console.log('Finished downloading to ', uri); }) .catch(error => { console.error(error); }); This one had one or two tricks, but here is a solution to this using Expo that

My app was working till today but now it looks like something happened to version 18 of Expo. I got this error: The experience you requested uses Expo SDK v(null), but this copy of Expo Client requires at least v20.0.0. The author should update their experience to a newer Expo SDK version. I then: Updated to Expo v20.0.0 Handled all unmet dependencies yarn cache clean rm -rf node_modules/ Reinstalled local node modules and I'm still getting the same error. What do I need to do to get Simulator to recognize that I am using the correct version of Expo? Current environment: Expo v20.0.0 react

I am using Expo XDE to create a new project for my first react native application. But whenever I click on "create new project", it starts downloading some stuff and errors out. Don't know where to increase this timeout value, I checked the documentation of expo but could not find anything related to this. Any leads here is really appreciated. Please note that I installed expo xde-2.22.0.dmg on mac OS High Sierra version 10.13 (17A405) Looks like someone reported this issue to expo after reading this question . An update to XDE is made that increases the timeout. Upgrading to XDE v2.22.1

After running npm install -g expo-cli and successfully installing the packages globally, expo is still not recognized as an internal or external command. Does anyone know how I might get around this issue using windows 10, or what to do in terms of something like a path variable. I may be too late to answer this, but for people looking for the same error this is what worked for me. Install yarn if you don't have it. I used the command choco install yarn (you'll have to install Chocolatey). If you have scoop installed, scoop install yarn also works. Use yarn to install expo with yarn global add

TypeError : Cannot read property 'fetch' of undefined at node_modules/whatwg-fetch/fetch.js:4:8 at Object.<anonymous> (node_modules/whatwg-fetch/fetch.js:466:3) at Object.<anonymous> (node_modules/jest-expo/src/setup.js:97:348) Got error while running tests with jest-expo. If anyone have solution please share. Obviously this is a guess without a code snippet, but looking at what fetch.js looked like at the time , the undefined value whose fetch property we can't read is the variable self (see line 1), which was meant to be set to the this context (see line 466). Therefore, it seems that fetch

Have been working on a project generated via create-react-native-app . Have been successfully using the project for some time, but now trying to test the app via exp start --tunnel , am suddenly seeing error (though was working previously) of the form: [22:08:19] /path/to/node_modules/react-native-scripts/build/bin/crna-entry.js: Plugin/Preset files are not allowed to export objects, only functions. In /path/to/node_modules/babel-preset-expo/index.js [22:08:19] Failed building JavaScript bundle. Have seen some posts that seem to deal with the problem ( https://github.com/babel/babel/issues