Invariant Violation: requireNativeComponent: "RNCPicker" was not found in the UIManager.

[CaptainJeff]

Bug

I am unable to get this to work. I'm receiving the following error

`Violation: requireNativeComponent: "RNCPicker" was not found in the UIManager.

This error is located at:
in RNCPicker (at PickerIOS.ios.js:107)
in RCTView (at View.js:35)
in View (at PickerIOS.ios.js:106)
in PickerIOS (at Picker.js:142)
in Picker (at edit-exercise.modal.tsx:54)
in EditExerciseModal (created by inject-with-exerciseStore(EditExerciseModal))
in inject-with-exerciseStore(EditExerciseModal) (at SceneView.js:9)
in SceneView (at StackViewLayout.tsx:909)
in RCTView (at View.js:35)
in View (at createAnimatedComponent.js:151)
in AnimatedComponent (at StackViewCard.tsx:106)
in RCTView (at View.js:35)
in View (at createAnimatedComponent.js:151)
in AnimatedComponent (at screens.native.js:71)
in Screen (at StackViewCard.tsx:93)
in Card (at createPointerEventsContainer.tsx:95)
in Container (at StackViewLayout.tsx:984)
in RCTView (at View.js:35)
in View (at screens.native.js:101)
in ScreenContainer (at StackViewLayout.tsx:393)
in RCTView (at View.js:35)
in View (at createAnimatedComponent.js:151)
in AnimatedComponent (at StackViewLayout.tsx:383)
in PanGestureHandler (at StackViewLayout.tsx:376)
in StackViewLayout (at withOrientation.js:30)
in withOrientation (at StackView.tsx:104)
in RCTView (at View.js:35)
in View (at Transitioner.tsx:267)
in Transitioner (at StackView.tsx:41)
in StackView (at createNavigator.js:80)
in Navigator (at createKeyboardAwareNavigator.js:12)
in KeyboardAwareNavigator (at SceneView.js:9)
in SceneView (at StackViewLayout.tsx:909)
in RCTView (at View.js:35)
in View (at createAnimatedComponent.js:151)
in AnimatedComponent (at StackViewCard.tsx:106)
in RCTView (at View.js:35)
in View (at createAnimatedComponent.js:151)
in AnimatedComponent (at screens.native.js:71)
in Screen (at StackViewCard.tsx:93)
in Card (at createPointerEventsContainer.tsx:95)
in Container (at StackViewLayout.tsx:984)
in RCTView (at View.js:35)
in View (at screens.native.js:101)
in ScreenContainer (at StackViewLayout.tsx:393)
in RCTView (at View.js:35)
in View (at createAnimatedComponent.js:151)
in AnimatedComponent (at StackViewLayout.tsx:383)
in PanGestureHandler (at StackViewLayout.tsx:376)
in StackViewLayout (at withOrientation.js:30)
in withOrientation (at StackView.tsx:104)
in RCTView (at View.js:35)
in View (at Transitioner.tsx:267)
in Transitioner (at StackView.tsx:41)
in StackView (at createNavigator.js:80)
in Navigator (at createKeyboardAwareNavigator.js:12)
in KeyboardAwareNavigator (at SceneView.js:9)
in SceneView (at SwitchView.js:12)
in SwitchView (at createNavigator.js:80)
in Navigator (at createAppContainer.js:430)
in NavigationContainer (at root-component.tsx:73)
in RCTView (at View.js:35)
in View (at createAnimatedComponent.js:151)
in AnimatedComponent (at react-native-safe-area-view/index.js:163)
in SafeView (at withOrientation.js:54)
in withOrientation (at root-component.tsx:71)
in BackButtonHandler (at root-component.tsx:70)
in MobXProvider (at root-component.tsx:69)
in RootComponent (at renderApplication.js:40)
in RCTView (at View.js:35)
in View (at AppContainer.js:98)
in RCTView (at View.js:35)
in View (at AppContainer.js:115)
in AppContainer (at renderApplication.js:39)`

Environment info

OS: macOS 10.14.6
CPU: (8) x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
Memory: 18.22 MB / 16.00 GB
Shell: 3.2.57 - /bin/bash

Binaries:
Node: 12.12.0 - /usr/local/bin/node
Yarn: 1.19.1 - /usr/local/bin/yarn
npm: 6.11.3 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 13.2, DriverKit 19.0, macOS 10.15, tvOS 13.2, watchOS 6.1
IDEs:
Android Studio: 3.5 AI-191.8026.42.35.6010548
Xcode: 11.2/11B52 - /usr/bin/xcodebuild
npmPackages:
@react-native-community/cli: ^2.9.0 => 2.9.0
react: 16.8.6 => 16.8.6
react-native: 0.60.5 => 0.60.5
npmGlobalPackages:
react-native-cli: 2.0.1

Describe what you expected to happen:

I expected the spinner to show but i received this error. I used the sample code in the readme

[freeworlder]

Hi,
The same here. It is working on android but on iOS it returns the error.
I am using expo 34.

[jainkuniya]

Hi, it will be great if you could share some demo project or expo link, where this is reproducible.

[alexhoo]

Same issue here. Expo SDK 36

[flatcoke]

Restart your simulator after pod install

[emmanuel-cbqa]

Restart your simulator after pod install

Same error.
I tried this and it still doesn't work for me.

[john-harding]

Getting this as well. Ejected from expo a month ago.

[cornelRaiu]

Hi there. Any news regarding this issue?

[Naturalclar]

Picker component is indeed deprecated but still exists in the react-native core repository. Until the picker component is fully removed from the core, usage of react-native-picker on a managed workflow of expo will probably not be supported.

If you are using bare workflow with expo eject, you may need to run pod install to install this package for iOS.

[sebastianknopp]

Picker component is indeed deprecated but still exists in the react-native core repository. Until the picker component is fully removed from the core, usage of react-native-picker on a managed workflow of expo will probably not be supported.

If you are using bare workflow with expo eject, you may need to run pod install to install this package for iOS.

Any idea when this will happen?

[JiaqiGuo]

In XCode, in the project navigator, select your project. Add libRNCPicker.a to your project's Build Phases ➜ Link Binary With Libraries
Then Build your project

[freeworlder]

In XCode, in the project navigator, select your project. Add libRNCPicker.a to your project's Build Phases ➜ Link Binary With Libraries
Then Build your project

I suppose this is for ejected projects. Mine was non-ejected expo project.

[tills98]

Same issue here. Using Expo SDK 37.

[karimcambridge]

Getting this issue on iPhone XS, Expo SDK 37.

[SixStringsCoder]

Same here Expo SDK 37

[mutavdzicm]

Same problem Expo SDK 37

[MorgadoKnivet]

I solved this deleting the app from simulator and installing again with react-native run-ios

[Mariussuv]

Not sure this is the case for you, but I imported it using "import {Picker} from '@react-native-community/picker';". And had the same problem for days now. But after changing to "import {Picker} from 'react-native';" it works fine now.

[digaso]

Not sure this is the case for you, but I imported it using "import {Picker} from '@react-native-community/picker';". And had the same problem for days now. But after changing to "import {Picker} from 'react-native';" it works fine now.

That's because react-native has their own picker but It is deprecated so they say to use this one

[mritzman-dg]

Same here with non-ejected app

Expo CLI 3.20.1 environment info:
System:
OS: macOS Mojave 10.14.6
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 10.16.1 - /usr/local/bin/node
npm: 6.9.0 - /usr/local/bin/npm
IDEs:
Android Studio: 3.5 AI-191.8026.42.35.5977832
Xcode: 10.3/10G8 - /usr/bin/xcodebuild
npmPackages:
expo: ^37.0.0 => 37.0.7
react: 16.9.0 => 16.9.0
react-dom: 16.9.0 => 16.9.0
react-native: https://github.com/expo/react-native/archive/sdk-37.0.0.tar.gz => 0.61.4
react-native-web: ^0.11.7 => 0.11.7
npmGlobalPackages:
expo-cli: 3.20.1

[sbirkmyre]

Hi, it will be great if you could share some demo project or expo link, where this is reproducible.

You can have a look at it in my project here. The specific file in question is here.

Let me know if I can provide any other information to help resolve the issue.

[ax0n-pr1me]

same problem - latest expo.

[Naturalclar]

As far as I know, this component is still not available in the managed workflow of expo 37.
In order to use this component, you would have to eject into a bare workflow, so that other native modules can be used.
If you want to use the Picker Component in managed workflow of expo, please import the Picker component directly from `react-native.

import { Picker } from 'react-native'

you may see a deprecated warning, but the component is still usable as it lives in the core.

[sbirkmyre]

As far as I know, this component is still not available in the managed workflow of expo 37.
In order to use this component, you would have to eject into a bare workflow, so that other native modules can be used.
If you want to use the Picker Component in managed workflow of expo, please import the Picker component directly from `react-native.

import { Picker } from 'react-native'

you may see a deprecated warning, but the component is still usable as it lives in the core.

Thanks for your comment. Will work with the picker directly from React Native. Do you know if/when this component will become available in the managed workflow of Expo 37?

[tometo-dev]

I too had this issue. This stackoverflow answer solved mine.

[natural411]

doing a new pod install fixed it for me

[lcruz09]

Here are some steps that helped on solving it:

• Make sure you install new pods
• Uninstall the app on your emulator
• Clean a build your app again (I did using Xcode)
• Redeploy your app on the emulator

Hope this helps someone :). Pura vida!

[AhmedAbuelenin]

The same problem here, hope this gets supported soon for expo users.
Thank you.

[alexhoo]

Expo 38 sdk is out and part of its new features is the Picker
https://blog.expo.io/expo-sdk-38-is-now-available-ab6cd30ca2ee?gi=39cbe20deef6

have you tried this upgrade?

[Mahdisaghroun]

same problem in Android "RNCAndoidDropdownPicker" was not found in the UI Manager

[Mahdisaghroun]

same problem in Android "RNCAndoidDropdownPicker" was not found in the UI Manager

[bachbonglong]

Restart your simulator after pod install
A wonderful thing happened. It works fine, I don't know why?

[pwaweru]

Hey I'm still experiencing this problem:
Invariant Violation: requireNativeComponent: "RNCPicker" was not found in the UIManager.

I am not using expo, and running the latest version of React Native (0.64).

I have Picker imported like so:

import { Picker } from '@react-native-picker/picker';

Any ideas?

[youssdevx]

I am not using expo and I had the same issue.
This is how i fixed it :
cd ios && rm -rf Pods
rm -rf node_modules
yarn && cd ios && pod install && cd ..
yarn add @react-native-picker/picker

Install rn-game-over to clean your React Native project

[sravanpronteff]

As far as I know, this component is still not available in the managed workflow of expo 37.
In order to use this component, you would have to eject into a bare workflow, so that other native modules can be used.
If you want to use the Picker Component in managed workflow of expo, please import the Picker component directly from `react-native.

import { Picker } from 'react-native'

you may see a deprecated warning, but the component is still usable as it lives in the core.

Thanks for your comment. Will work with the picker directly from React Native. Do you know if/when this component will become available in the managed workflow of Expo 37?

its not working in IOS

[abnwoke]

Please how do I style the picker? my styles are not working.

<Picker
selectedValue={selectedLanguage}
onValueChange={(itemValue, itemIndex) =>
setSelectedLanguage(itemValue)
}
style={{padding: 0, margin: 0}}
mode='dialog' /* dropdown | dialog */
prompt="Categories"

<Picker.Item label="Java" value="java" />

<Picker.Item label="JavaScript" value="js" />

[abnwoke]

Please how do I add a placeholder to the picker?

[JohnMendes]

Bom dia

fiz assim <Picker.Item style={{color:'#fff'}} label="ENTRADA" value={ENTRADA} />

[DanielAraldi]

On RN 66.3 I solved this problem in my project by adding this to my Podfile:

target 'ProjectName' do
  config = use_native_modules!

  # ...
  pod 'RNCPicker', :path => '../node_modules/@react-native-picker/picker'
  # ...
end

[Stephen-L-Wang]

On RN 66.3 I solved this problem in my project by adding this to my Podfile:

target 'ProjectName' do
  config = use_native_modules!

  # ...
  pod 'RNCPicker', :path => '../node_modules/@react-native-picker/picker'
  # ...
end

Thanks It working

[MorenoMdz]

Is anybody here experienced in using this library in the new expo custom dev clients? We are getting "RNCPicker" was not found in the UIManager when trying to use the library, it works fine in Expo Go (SDK 44)

[kennyho-ml]

Is anybody here experienced in using this library in the new expo custom dev clients? We are getting "RNCPicker" was not found in the UIManager when trying to use the library, it works fine in Expo Go (SDK 44)

@MorenoMdz -- Had to use expo update

[MorenoMdz]

Is anybody here experienced in using this library in the new expo custom dev clients? We are getting "RNCPicker" was not found in the UIManager when trying to use the library, it works fine in Expo Go (SDK 44)

@MorenoMdz -- Had to use expo update

Hey, thanks for the response! What we had to do here was create a new iOS simulator build to use in the dev client.

[Rukt]

What we had to do here was create a new iOS simulator build to use in the dev client.

It was a similar solution for me on Android:

1. expo install @react-native-picker/picker (2.2.1, per package.json)
2. eas build --profile development --platform android (where the "development" profile has "developmentClient"; true and "android.buildType": "apk")
3. adb install "path/to/devBuild.apk" (physical device)
4. expo start --clear --dev-client

[Saalim95]

I solved it by:

1. First, run npm install react-native-picker-select
2. Then run npm install @react-native-picker/picker
3. pod install

[shreyvijayvargiya]

ll @react-native-community/picker

This is deprecated!!!

[janusqa]

I had this issue just pop up. I realize that

1. When using expo go there is no issue as expo go seems to have this installed by default, that is @react-native-picker/picker
2. If using a dev build I needed to install it manually "npx expo install "@react-native-picker/picker", rebuild the project and that worked.

[Ant1N]

I'm still getting this error as well. I have tried just about all tips in this thread as well. Any new leads on what might be the issue?

[AlexKenny6]

I had this issue too and finally found a solution.

I am running Expo SDK 49 and @react-native-picker/picker v 2.4.10 with a managed Expo workflow.

The picker was working great in Expo Go on iOS simulator and on my physical iPhone. Then was working great when I tested in a staging branch with eas updates. The problem I faced was the app would crash after I clicked on the page that was using the picker in production. After a few hours of tests the solution that I found was to create a new development build with EAS Build. After the build was uploaded to TestFlight, I again tested the Picker and it finally worked.

Hopefully this helps for people and @Ant1N.

[JJSLIoT]

This seems to be an issue with 2.6.0+ versions, I rolled back to the 2.5.1 version and the pod issue seems to be resolved.

[ArunKumar-webdev]

I solved it by:

1. First, run npm install react-native-picker-select
2. Then run npm install @react-native-picker/picker
3. pod install

thanks this works.

[Naturalclar]

For expo projects, please run
expo install @react-native-picker/picker

For bare projects, please run
npm install @react-native-picker/picker
then run
pod install
for iOS projects.