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