React Native Show Progress bar While Loading WebView

React Native WebView LoadingBar

This example is sort of extension of our previous post of Webview Example in which we have loaded the HTML page from URL. Here is the example of how to Show Progress bar While Loading WebView. As it is the imported topic to cover so we decided to cover it separately.

In this example, we will show the ActivityIndicator while the webpage is loading this will help the user to understand that the application is doing some task. If we do not apply the progress bar and web page took some extra time to load then the user will be confused that the application is not working so we suggest you use Progress Bar if you are using WebView to load the webpage.

We have to add renderLoading prop in WebView in which we will return the view which we want to show while the page is loading. For this example, we will return the ActivityIndicator like

ActivityIndicatorLoadingView() {
   //making a view to show to while loading the webpage
   return (
     <ActivityIndicator
        color="#009688"
        size="large"
        style={styles.ActivityIndicatorStyle}
     />
   );
}

To Import WebView in code

import { WebView } from "react-native-webview"

Render WebView Using

<WebView
    style={styles.WebViewStyle}
    //Loading URL
    source={{ uri: 'https://aboutreact.com' }}
    //Enable Javascript support
    javaScriptEnabled={true}
    //For the Cache
    domStorageEnabled={true}
    //View to show while loading the webpage
    renderLoading={this.ActivityIndicatorLoadingView}
    //Want to show the view or not
    startInLoadingState={true}
/>

To Make a React Native App

Getting started with React Native will help you to know more about the way you can make a React Native project. We are going to use react-native init to make our React Native App. Assuming that you have node installed, you can use npm to install the react-native-cli command line utility. Open the terminal and go to the workspace and run

npm install -g react-native-cli

Run the following commands to create a new React Native project

react-native init ProjectName

If you want to start a new project with a specific React Native version, you can use the --version argument:

react-native init ProjectName --version X.XX.X
react-native init ProjectName --version react-native@next

This will make a project structure with an index file named App.js in your project directory.

Installation of Dependency

To use WebView you need to install react-native-webview dependency. To install this dependency open the terminal and jump into your project

cd ProjectName

Run the following commands

npm install react-native-webview --save

This command will copy the dependency into your node_module directory. –save is optional, it is just to update the dependency in your package.json file.

CocoaPods Installation

After the updation of React Native 0.60, they have introduced autolinking so we do not require to link the library but need to install pods. So to install pods use

cd ios && pod install && cd ..

Code

Now open App.js in any code editor and replace the code with the following code

App.js

(Use if you want to show the loader once when opening a web URL)

//This is an example code to React Native Show Progress bar While Loading WebView//
import React, { Component } from 'react';
//import react in our code. 

import { StyleSheet, ActivityIndicator } from 'react-native';
//import all the components we are going to use. 

import { WebView } from "react-native-webview";
export default class MainActivity extends Component {
  ActivityIndicatorLoadingView() {
    //making a view to show to while loading the webpage
    return (
      <ActivityIndicator
        color="#009688"
        size="large"
        style={styles.ActivityIndicatorStyle}
      />
    );
  }
  render() {
    return (
      <WebView
        style={styles.WebViewStyle}
        //Loading URL
        source={{ uri: 'https://aboutreact.com' }}
        //Enable Javascript support
        javaScriptEnabled={true}
        //For the Cache
        domStorageEnabled={true}
        //View to show while loading the webpage
        renderLoading={this.ActivityIndicatorLoadingView}
        //Want to show the view or not
        startInLoadingState={true}
      />
    );
  }
}
const styles = StyleSheet.create({
  WebViewStyle: {
    justifyContent: 'center',
    alignItems: 'center',
    flex: 1,
    marginTop: 40,
  },
  ActivityIndicatorStyle: {
    flex: 1,
    justifyContent: 'center',
  },
});

App.js (Updates)

(Use if you want to show the loader every time whenever you click on links in Webview)

//This is an example code to React Native Show Progress bar While Loading WebView//
import React, { Component } from 'react';
//import react in our code.

import { StyleSheet, ActivityIndicator, View } from 'react-native';
//import all the components we are going to use.

import { WebView } from "react-native-webview";

export default class MainActivity extends Component {
  constructor(props) {
    super(props);
    this.state = { visible: true };
  }

  showSpinner() {
    console.log('Show Spinner');
    this.setState({ visible: true });
  }

  hideSpinner() {
    console.log('Hide Spinner');
    this.setState({ visible: false });
  }

  render() {
    return (
      <View
        style={this.state.visible === true ? styles.stylOld : styles.styleNew}>
        {this.state.visible ? (
          <ActivityIndicator
            color="#009688"
            size="large"
            style={styles.ActivityIndicatorStyle}
          />
        ) : null}

        <WebView
          style={styles.WebViewStyle}
          //Loading URL
          source={{ uri: 'https://aboutreact.com' }}
          //Enable Javascript support
          javaScriptEnabled={true}
          //For the Cache
          domStorageEnabled={true}
          //View to show while loading the webpage
          //Want to show the view or not
          //startInLoadingState={true}
          onLoadStart={() => this.showSpinner()}
          onLoad={() => this.hideSpinner()}
        />
      </View>
    );
  }
}
const styles = StyleSheet.create({
  stylOld: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
  styleNew: {
    flex: 1,
  },
  WebViewStyle: {
    justifyContent: 'center',
    alignItems: 'center',
    flex: 1,
    marginTop: 40,
  },
  ActivityIndicatorStyle: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    position: 'absolute',
  },
});

To Run the React Native App

Open the terminal again and jump into your project using.
cd ProjectName
To run the project on an Android Virtual Device or on real debugging device
react-native run-android
or on the iOS Simulator by running
react-native run-ios (macOS only).

Output Screenshots

         

Output in Online Emulator

This is how you can show the progress bar while loading webview. If you have any doubts or you want to share something about the topic you can comment below or contact us here. There will be more posts coming soon. Stay tuned!

Hope you liked it. 🙂


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8 thoughts on “React Native Show Progress bar While Loading WebView”

  1. I have seen your example it is very help full to me but i have a doubt i want to get loading icon when ever i click on links in webview could you please assist me how to achieve that functionality

    Reply
  2. hello,
    I want to integrate webview with the button ….
    When when I click on button A than google.com must be shown in the webview
    if button B is pressed than facebook.com view must be shown…
    It will be a great help if you provide the syntax… I searched a lot but didn’t find any…

    Reply
  3. Hello sir,
    I need to show no internet connection with refresh button when there is no internet. I searched alot and tried but my code is not working so could you please help me??

    Reply
  4. Hi there,
    I need to show no internet connection with refresh button when there is no internet. I searched alot and tried but my code is not working so could you please help me??

    Reply
    • Here is the code and the tutorial which can help you in that. You just need to add a button to change the state of isConnected

      https://aboutreact.com/react-native-webview/
      https://aboutreact.com/react-native-netinfo/

      //This is an example code to understand WebView//
      import React, { Component } from ‘react’;
      //import react in our code.
      import { Text } from ‘react-native’;
      import { WebView } from ‘react-native-webview’;
      import NetInfo from ‘@react-native-community/netinfo’;
      //import all the components we are going to use.
      export default class App extends Component {
      state = {
      isConnected: false,
      };
      componentDidMount() {
      //To get the network state once
      NetInfo.fetch().then(state => {
      if (state == this.state.isConnected) {
      this.setState({ isConnected: state });
      }
      });

      NetInfo.addEventListener(state => {
      if (state == this.state.isConnected) {
      this.setState({ isConnected: state });
      }
      });
      }

      render() {
      if (this.state.isConnected) {
      return No Connection;
      }
      return (

      );
      }
      }

      Reply

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