React Native Webview not loading any url (React native web view not working)

Using the answers from other users, I was able to get my react native with webview working both inside a view and outside a view. My problem came down to two things. Being on the android emulator and behind a proxy, I just had to go to my browser (chrome) in the android emulator and sign in to the corporate proxy. Secondly, some sites work and others will not work. Whether the webview was nested or not inside of a View tag, some sites like cnn.com and slack.com etc will work fine, but no matter what settings I tried for google.com it wouldn't work (even though the proxy will definitely allow google.com) Lastly, when I rebuild my application and push to the emulator the new app, sometimes it took an inordinately long time to load any site. But once the site was loaded, the links are quick and responsive. So if you don't at first see something after a build, also be patient. Hope this helps someone else.

My final app.js

import React, { Component } from 'react';
import {
  Platform,
  StyleSheet,
  Text,
  View,
  Dimensions
} from 'react-native';

import { WebView } from 'react-native';

const deviceHeight = Dimensions.get('window').height;
const deviceWidth = Dimensions.get('window').width;

type Props = {};
export default class App extends Component<Props> {

  render() {
    return (
<View style={{flex:1}}>
  <WebView
   style={styles.webview}
   source={{uri: 'https://www.slack.com'}}
   javaScriptEnabled={true}
   domStorageEnabled={true}
   startInLoadingState={false}
   scalesPageToFit={true} />
</View>
    );
  }
}

const styles = StyleSheet.create({
  webview: {
    flex: 1,
    backgroundColor: 'yellow',
    width: deviceWidth,
    height: deviceHeight
  }
});

I'm facing same issue. What I observed is that WebView doesn't work if it's nested. If component returns just WebView, then everything is fine.

I had this issue. WebView would render when it was the only component returned, but not when nested in another View component.

For reasons I'm not entirely sure of the issue was resolved by setting a width property on the WebView component.

class App extends React.Component {
  render() {

    return (
      <View style={styles.container}>
        <WebView
          source={{uri: 'https://www.youtube.com/embed/MhkGQAoc7bc'}}
          style={styles.video}
        />
        <WebView
          source={{uri: 'https://www.youtube.com/embed/PGUMRVowdv8'}}
          style={styles.video}
        />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'space-between',

  },
  video: {
    marginTop: 20,
    maxHeight: 200,
    width: 320,
    flex: 1
  }
});