Managed Workflow Fundamentals. Bare Workflow. API Reference. If you need to make customizations to your Expo project, we recommend using the bare workflow instead. ExpoKit is an Objective-C and Java library that allows you to use the Expo platform and your existing Expo project as part of a larger standard native project -- one that you would normally create using Xcode, Android Studio, or react-native init.
What is this for? If you created an Expo project and you want a way to add custom native modules, this guide will explain how to use ExpoKit for that purpose. This is core to the Expo philosophy and it's part of what makes Expo fast and powerful to use. However, there are some cases where advanced developers need native capabilities outside of what Expo offers out-of-the-box.
Those projects will have dependencies on ExpoKit, so everything you already built will keep working as it did before. We call this "ejecting" because you still depend on the Expo SDK, but your project no longer lives inside the standard Expo client.
You control the native projects, including configuring and building them yourself. Should I eject to ExpoKit? You might want to eject if:. Your Expo project needs a native module that Expo doesn't currently support. We're always expanding the Expo SDKso we hope this is never the case. But it happens, especially if your app has very specific and uncommon native demands. You should not eject if:. All you need is to distribute your app in the iTunes Store or Google Play.
Expo can build binaries for you in that case. If you eject, we can't automatically build for you any more. You are uncomfortable writing native code. Ejected apps will require you to manage Xcode and Android Studio projects. You enjoy the painless React Native upgrades that come with Expo. After your app is ejected, breaking changes in React Native will affect your project differently, and you may need to figure them out for your particular situation. You require Expo's push notification services.
After ejecting, since Expo no longer manages your push credentials, you'll need to manage your own push notification pipeline. You rely on asking for help in the Expo community. In your native Xcode and Android Studio projects, you may encounter questions which are no longer within the realm of Expo. After you eject, all your JS files will stay the same, but we'll additionally create ios and android directories in your project folder. You'll still be able to develop and test your project with Expo CLI, and you'll still be able to publish your Expo JS code the same way.
However, if you add native dependencies that aren't included in Expo, other users won't be able to run those features of your app with the main Expo app. You'll need to distribute the native project yourself. Install Expo CLI.Managed Workflow Fundamentals.
Bare Workflow. API Reference. If you need to make customizations to your Expo project, we recommend using the bare workflow instead. Before you read this guide. Then use expo eject to add ExpoKit choose the "ExpoKit" option. Make sure to perform these steps before continuing in this guide. The remainder of the guide will assume you have created an ExpoKit project. Setting up your project. By this point you should have a JS app which additionally contains ios and android directories.
Check JS dependencies. Your project's package. This should already be configured for you. Your JS dependencies should already be installed via npm install or yarn. Run the project with Expo CLI. Run expo start from the project directory. This step ensures that the React Native packager is running and serving your app's JS bundle for development.
Leave this running and continue with the following steps. Note: Before building for release, you must run expo publish to serve your app's JS bundle in TestFlight and production. This step ensures the native iOS project is correctly configured and ready for development. If you don't have it already, install CocoaPodswhich is a native dependency manager for iOS.
Run pod install from your project's ios directory. Open your project's xcworkspace file in Xcode. Use Xcode to build, install and run the project on your test device or simulator. Android: Build and run. Open the android directory in Android Studio, then build and run the project on an Android device or emulator.First, open terminal and install create-react-native-app v2 via npm. Of course first, you need to install npm.
Create a new project with create-react-native-app. If you want to check that your project has a problem or not, simply try :.
However, sometimes we need to use react-native-link or directly need to reach native codes. In your project root, simply command :. It will ask you to how would you eject this project. In this article, we will select ExpoKit. It will create an account or just use your already logged in user authentications and eject your whole project.
Choose your iOS bundle id very carefully. It will be your unique ID for everything! Like iOS, you should choose your Android package name very carefully! After all these steps, you need to see this message. Also, we still can use Expo dependency :.
Your project structure should be seen like this one :. This one is important and required by Expo. Open your package. It should be something like that, maybe the SDK version is changed. In our project directory, we need to run. Actually, Expo XDE does that for us. Thanks to ExpoKit, we can do it for ourselves :. Do not open blue one! Open white one! Now, open your XCode and firstly, select your team:. I know, I know. Programmers cannot ignore warnings easily but for now, just ignore them. Maybe you can jump on it.
React Native Notes 1: Eject Expo with ExpoKit [UPDATED]
Do not even try to touch them :. You do not need to fix them :. So stay with me :. Developing With ExpoKit Documentation. Open your app. This line should have both the JSON file. Also please check your react-native dependency version, it should have a match with your SDK version in your package. Open it and wait for gradle sync. Just wait till it is finished with a success or failure. If it is a fresh project, it should finish with success. We need to run and keep it running our project with :.
If it runs without a problem : Here it is, we did it!I loved learning React Native through Expo. When building my first app in Expo, I was unable to continue making progress with the managed workflow.
I needed to build in-app purchases. An in-app purchase library exists for Expo, but you need to eject to the bare workflow to use it. I tried digging through the documentation, trying to figure out a nice way to get this to work without ejecting, but came up empty handed. The first step in ejecting is to run the eject script. This is as easy as running expo eject. After this a bunch of stuff will run to setup your ios and android projects and your app startup code for each.
This is your friendly reminder to commit after each step when doing a complex migration like this one. After this, you can cd into your ios folder and run pod install to install all of your dependencies for IOS.
These can be replaced fairly easily.
However, Notifications can be one of the harder modules to migrate away from. I replaced my old notifications implementation with react-native-push-notifications-ios and wrote my own wrapper for the package using React Hooks. At this point, you should try running your app. To do this, open your IOS project in Xcode. Click the build button at the top. This should run the metro bundler and launch your simulator, or run on your connected device. The proper pod was not installed when I ejected, so I followed these bare workflow installation instructions.
Basically, I just had to install react-native-unimodules. Then, I could expo install expo-facebookand do a pod install to get it working again. I also started receiving null from expoConstants. This caused a few issues in some more modules I was using.Are you planning to eject expo from your react-native app?
Are there some other reasons? So, all the great development experience that you had with expo is gone now. Typically to develop a feature in non-expo takes almost 3x the time as compared to expo. If the developer chooses to eject from Expothese great development features of the Expo are lost and it takes almost 3x the time as compared to the expo to develop those features in the non-expo state.
Expo is kind of an extension to ReactNative that offers a bunch of components and libraries already included to facilitate the development of mobile apps with React Native. The expo team regularly updates the SDK with new solutions which is very useful for the user.
The Expo community has already included many useful packages in the build and the users are just not aware of it.
Is Expo Eject a Good Idea?
Be it SVGsanimationor videomost of the packages are already in the expo. So far we have seen that in some of the cases, expo eject has to be done. And expo itself says that here. But wait, what if I tell you that there is a way in which you can add custom native modules in expo without ejecting it. Well, my above statement is not totally true. In the following blog, I have described in detail how you can run expo along with custom native modules, or simply do react-native link with expo.
I have been surfing online more than three hours today, but I never found any interestinng article like yours. In my view, if all site owners and bloggers made good content material as you probably did, the web will probably be a lot more helpful thann ever before. Your email address will not be published.
Save my name, email, and website in this browser for the next time I comment. Skip to content. Hire A Coder. Is Expo Eject a Good Idea? What is Expo? Running expo and raw react-native together. Leave a Comment Cancel Reply Your email address will not be published. Consult the Coder.
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Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. The command return this message Ejected successfully! After that, into the ios generated folder I run the command pod install and the result is Pod installation complete! After performing this procedure I try to run the application using a ios simulator, but I have this error:.
It appears the native Expo modules are unavailable and this code is not running on Expo.
The problem you're having is that you have an AppLoading from "expo" package in the App. You have to erase that and put the fonts in the componentDidMount. Learn more. Problem after ejecting application using expo Ask Question.
Asked 6 months ago. Active 2 months ago. Viewed times. I set the name of the app and the xcode project The command return this message Ejected successfully! Note that before executing the npm run eject command the app worked correctly. This is the package. Andrew How are you trying to run your project? Have you tried building the app through Xcode? Active Oldest Votes. Daniel Silva Daniel Silva 21 4 4 bronze badges. Sign up or log in Sign up using Google.
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Technical site integration observational experiment live on Stack Overflow.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Hi, I was trying out expo but so far it has given me more headaches than actual benefits - I say not wanting to offend at all since it was probably me that didn't know to use it.
Alternatively, you could create a new project with react-native init and copy and paste your JS files into it. If you have already ejected to ExpoKit, I recommend taking this approach or reverting back in git to your most recent commit pre-ejecting and eject directly to React Native instead.Lessons Learned 6 Months with Expo & React Native
We would appreciate if you could write us with more details on exactly what issues you had with Expo! You can reach us at support expo. Sorry it didn't work out for you! Actually that documentation doesn't say how to eject, it just says how to install the react-native CLI tool. I think it'd be a good idea to explain the actual steps one would need to take to eject after using CRNA.
You're right, that guide just explains what it is. Just made Let me know if it needs any changes, happy to help! It took me so much time to completely eject the expo and make it runnable. I faced multiple issues, one after other. I have listed all the issues we face in this process and the solution which worked for me. See the complete guide for ejecting Expo in this article. Skip to content. This repository has been archived by the owner.
It is now read-only. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up.