Invariant Violation: requireNativeComponent: "RNCWebView" was not found in the UIManager - react-native

Question

Hello friends i got this error after linking react-native-webview to my project
Invariant Violation: requireNativeComponent: "RNCWebView" was not found in the UIManager.
This error is located at:
in RNCWebView (at WebView.android.js:250)
in RCTView (at WebView.android.js:253)
in WebView (at App.js:7)
in App (at renderApplication.js:45)
in RCTView (at AppContainer.js:109)
in RCTView (at AppContainer.js:135)
in AppContainer (at renderApplication.js:39)
And there is my code
import React, { Component } from 'react';
import { WebView } from 'react-native-webview';
export default class App extends Component {
render() {
return (
<WebView
originWhitelist={['*']}
source={{ html: '<h1>Hello world</h1>' }}
/>
);
}
}
Error Image in my android

Answer 1

run react-native link react-native-webview
check: https://github.com/react-native-community/react-native-webview/issues/140

Answer 2

With React Native 0.60+, no need to add anything to the podfile.
Try again cd ios && pod install
If it doesn't help, try restarting the simulator and rebuilding the app.
Restarting Xcode is also a good idea.
You could optionally clean the build Folder in XCode

Answer 3

Try these steps.
Delete pods folder and podfile.lock
npm uninstall react-native-webview
npm i react-native-webview
cd ios
pod install
(npx) react-native run-ios
Reset cache

Answer 4

I had the same issue. Try Add this line to your podfile :-
pod 'react-native-webview', :path => PROJECT_PATH + 'react-native-webview'
then go to ios folder cd ios and install pods pod install
It has resolved this problem for me.

Answer 5

Make sure you did:
npx pod-install
npx react-native run-ios
After installing the package you. need to update pods and then run the project again.

Answer 6

my solution for this problem was the following:
Android
1 add this in your android/settings.gradle
include ':react-native-webview'
project(':react-native-webview').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-webview/android')
2 add this in your android/app/build.gradle
dependencies {
implementation project(':react-native-webview')
....
3 in your MainApplication.java:
import com.reactnativecommunity.webview.RNCWebViewPackage;//add this import
....
public class MainApplication extends Application implements ReactApplication {
private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
#Override
public boolean getUseDeveloperSupport() {
return BuildConfig.DEBUG;
}
#Override
protected List<ReactPackage> getPackages() {
return Arrays.<ReactPackage>asList(
new MainReactPackage(),
new RNCWebViewPackage(),//add line
....
IOS
1 add the following line in your ios/Podfile and then open your terminal, go to your project ios folder and run pod install
...
pod 'react-native-webview', :path => '../node_modules/react-native-webview'
...

Answer 7

I had the same issue before , I tried this:
pod 'react-native-webview', :path => PROJECT_PATH + 'react-native-webview'

Answer 8

I update webView to the latest (11.18.1) and it was fixed without any additional linking steps.

Answer 9

I have done below steps:
1. cd ios
2. rm Podfile.lock
3. pod install
This installed the missing library i.e. react-native-webview and added below line to Podfile file.
pod 'react-native-webview', :path => '../node_modules/react-native-webview'
environment which I am working on:
"react": "16.9.0",
"react-native": "0.61.5"

Answer 10

Follow these simple steps worked for me:
Rebuild the App. Run:
npx react-native run-android
Run:
react-native link react-native-webview
Check if RNCWebViewPackage is imported in MainApplication.java file, which looks something like this:
import com.reactnativecommunity.webview.RNCWebViewPackage;
Note: I'm using react-native#0.64.2.

Answer 11

There is no need to add anything or use the link for React Native 0.60+.
In my case, which was android, I simply build the project again using:
$ npm run android

Answer 12

Have you tried to link manually?
Go to ../node_modules/react-native-webview/ios and drag and drop the RNCWebView.xcodeproj to Libraries folder on Xcode, right after, Go to Build Phases tab (on Xcode) in the section "Link binary With libraries" add the libRNCWebView.a (inside Libraries/RNCWebView.xcodeproj/Products). Try to build and run

Answer 13

try to re-build your project after installation and link of webview package (npx react-native run-android)