I developed a React Native application and tested it using Expo. When I finished, I tried to export the apk but I saw that it crash immediately after the execution. Then I tried to run "react-native run-android" and I see that the problem was something about Expo. The exact error is:
"The expo SDK requires Expo to run. It appears the native Expo modules are unavailable and this code is not running on Expo". How can I use this app without Expo? What should I do to make it work?
Related
I integrated the react-native-signature-canvas in my expo app.
It works fine in development and also works if I build the apk through expo.
But it crashes of I make android app bundle(aab) using eas.
Ensure you have installed React Native WebView as it's mentioned in documentation
This package depends on react-native-webview and it is particularly
needed when you are using React Native CLI. To install
react-native-webview
I was wondering if I could use Expo to run the react-native project that I created using the npx react-native init command, since it generates a better structure for real-world applications.
The reason I want to do this is to avoid the countless erros that I had while running and debugging the app.
You can't do that..
React native and expo are different.
You can run expo projects on react native by detaching them. Expo has limitations.
You can not run react native projects on expo, i.e projects made by react native init/npx can't run on expo
You can use a package made available by the expo
react-native-unimodules
for any React Native project using some resources made available by the expo.
react-native-unimodules
I want to run my React Native app in the iOS emulator. Here is what I done so far:
I installed XCode, along with its command line tools, and can bring up the emulator without issue.
I created an empty React Native app using the Expo CLI, per the instructions here. https://facebook.github.io/react-native/docs/getting-started. I am running on Node v10.0.0 on a Mac.
Afterwards I install all the necessary dependencies.
I then run "sudo npm run ios". This fires up the Metro Bundler as well as the iOS simulator. The Simulator loads up after about 5 minutes of waiting, but my app does not start up.
What am I missing here?
I should note that I prefer to stick with Expo, so I'd prefer not to have to eject.
I build an app with Expo tool .. but now I what to move to react native without expo .. I tried to just create a new project in react native and then transfer the code that I had written and install components that I had used in my app .
the app with Expo work as expected put with moved to react native without Expo works as unexpected and crashes.
you don't need to transfer the code like that, the expo provides us to detach our code from expo to without expo react-native projects.
please refer to this link expokit eject
if you want to use expo API in your project then you can detach your app using detach-with-expokit.
use expo eject to add ExpoKit (choose the "ExpoKit" option).
I have build an app using react native(detached) but the thing is I would want to completely get rid of Expo. The reason is, what if one day EXPO service get shut down or no more supported.
So in this case I would not want the app to be affected.
Currently I need to publish my app thru ExpoKit to see the latest changes, how would I build my android app so it would not have any reference to Expo but still be able to work properly
Currently this is how I understand how the react native and expo works: first u build ur app using react native code and then a bundle.js is generated somewhere on cloud(EXPO) using publish command so the app communicate with that bundle.js.
Note I am not using any feature from Expo so why would I need Expo in this case?
Edited: If I am detaching my app from expo, I mean why would I still need Expo? Can't I just build the app and run the app without expo at all?
You can build your whole application without using expo, just follow the steps from facebook documentation in "Building Projects with Native Code" tab.
or
you can run "npm run eject" in your project root directory folder.
After this, you can build your appliaction using react-native cli commands, like
react-native run-android.
edited :--
For building apk for production, you can follow steps given in facebook documentation as generating signed apk and for released IPA for iOS yo can follow building your app for production for IOS.