'First React Native app: Open web shows blank website
I am trying to build a websaite/app using Rect Native. I've installed Visual Studio Code for programming.
I am running Windows 10.
When I start npm with command "npm start" I get the following option:
› Press a │ open Android
› Press w │ open web
› Press r │ reload app
› Press m │ toggle menu
› Press d │ show developer tools
› shift+d │ toggle auto opening developer tools on startup (disabled)
› Press ? │ show all commands
Now I open web using "w". After few seconds a blank website appears with the apps Icon and Title, but no content.
App.js
import { StatusBar } from 'expo-status-bar';
import { StyleSheet, Text, View } from 'react-native';
export default function App() {
return (
<View style={styles.container}>
<Text>Open up App.js to start working on your app!</Text>
<StatusBar style="auto" />
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
alignItems: 'center',
justifyContent: 'center',
},
});
app.json
{
"expo": {
"name": "Whois",
"slug": "Whois",
"version": "1.0.0",
"orientation": "portrait",
"icon": "./assets/icon.png",
"splash": {
"image": "./assets/splash.png",
"resizeMode": "contain",
"backgroundColor": "#ffffff"
},
"updates": {
"fallbackToCacheTimeout": 0
},
"assetBundlePatterns": [
"**/*"
],
"ios": {
"supportsTablet": true
},
"android": {
"adaptiveIcon": {
"foregroundImage": "./assets/adaptive-icon.png",
"backgroundColor": "#FFFFFF"
}
},
"web": {
"favicon": "./assets/favicon.png"
}
}
}
babel.config.json
module.exports = function(api) {
api.cache(true);
return {
presets: ['babel-preset-expo'],
};
};
package.json
{
"name": "whois",
"version": "1.0.0",
"main": "node_modules/expo/AppEntry.js",
"scripts": {
"predeploy": "expo build:web",
"deploy": "gh-pages -d web-build",
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"web": "expo start --web",
"eject": "expo eject"
},
"dependencies": {
"expo": "^41.0.0",
"expo-status-bar": "~1.2.0",
"react": "17.0.1",
"react-dom": "17.0.1",
"react-native": "^0.67.2",
"react-native-web": "0.17.1"
},
"devDependencies": {
"@babel/core": "^7.12.9"
},
"private": true
}
Websites code that is generated when I press "w"
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta httpEquiv="X-UA-Compatible" content="IE=edge" />
<!--
This viewport works for phones with notches.
It's optimized for gestures by disabling global zoom.
-->
<meta
name="viewport"
content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1.00001, viewport-fit=cover"
/>
<title>Whois</title>
<style>
/**
* Extend the react-native-web reset:
* https://github.com/necolas/react-native-web/blob/master/packages/react-native-web/src/exports/StyleSheet/initialRules.js
*/
html,
body,
#root {
width: 100%;
/* To smooth any scrolling behavior */
-webkit-overflow-scrolling: touch;
margin: 0px;
padding: 0px;
/* Allows content to fill the viewport and go beyond the bottom */
min-height: 100%;
}
#root {
flex-shrink: 0;
flex-basis: auto;
flex-grow: 1;
display: flex;
flex: 1;
}
html {
scroll-behavior: smooth;
/* Prevent text size change on orientation change https://gist.github.com/tfausak/2222823#file-ios-8-web-app-html-L138 */
-webkit-text-size-adjust: 100%;
height: calc(100% + env(safe-area-inset-top));
}
body {
display: flex;
/* Allows you to scroll below the viewport; default value is visible */
overflow-y: auto;
overscroll-behavior-y: none;
text-rendering: optimizeLegibility;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-ms-overflow-style: scrollbar;
}
/* Enable for apps that support dark-theme */
/*@media (prefers-color-scheme: dark) {
body {
background-color: black;
}
}*/
</style>
<link rel="manifest" href="\manifest.json"><link rel="icon" type="image/png" sizes="16x16" href="\favicon-16.png"></link><link rel="icon" type="image/png" sizes="32x32" href="\favicon-32.png"></link><link rel="shortcut icon" href="\favicon.ico"></link></head>
<body>
<!--
A generic no script element with a reload button and a message.
Feel free to customize this however you'd like.
-->
<noscript>
<form
action=""
style="
background-color: #fff;
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: 9999;
"
>
<div
style="
font-size: 18px;
font-family: Helvetica, sans-serif;
line-height: 24px;
margin: 10%;
width: 80%;
"
>
<p>Oh no! It looks like JavaScript is not enabled in your browser.</p>
<p style="margin: 20px 0;">
<button
type="submit"
style="
background-color: #4630eb;
border-radius: 100px;
border: none;
box-shadow: none;
color: #fff;
cursor: pointer;
font-weight: bold;
line-height: 20px;
padding: 6px 16px;
"
>
Reload
</button>
</p>
</div>
</form>
</noscript>
<!-- The root element for your Expo app. -->
<div id="root"></div>
<script src="/static/js/bundle.js"></script></body>
</html>
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
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