React Native Finish Current Screen while Navigating to Next Screen

Introduction

While we navigate to the next screen from any screen the old screen remains in the stack and after coming back we see the same screen. React Native Finish Current Screen while Navigating to Next Screen includes how we navigate to the next screen and finish the old one from the stack?

Why do we need to finish the current screen while navigating to the next screen?

While developing an App we sometimes need to go to the next screen but never want to come back to the current screen. For example, You have a Splash screen in your App which you want to show for the first time when the user opens the app and does not want to show it again either by pressing the back button or by any other way.

To finish the current screen while navigating to the next screen you have to define the navigation of the screen by the createSwitchNavigator in place of createStackNavigator. It will not store your previous screen into the stack so the user will not be able to go to the previous screen.

If you have used the createStackNavigator you can find that on the first screen, the app has a Navigation Bar and while going to the other screen it will have a Navigation Bar with the back button to go to the previous screen. It is because it stores the previous screen in the stack to go back. But in this example of createSwitchNavigator, you can find it do not show the Navigation Bar either on First Screen or on Second Screen. So let’s get started with the example.

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 Dependencies

To use createStackNavigator you need to install react-navigation and react-native-gesture-handler dependencies.

To install these dependencies open the terminal and jump into your project

cd ProjectName

Run the following commands

npm install react-navigation --save
npm install react-native-gesture-handler react-native-safe-area-context @react-native-community/masked-view react-native-screens react-native-reanimated --save

This command will copy all the dependencies into your node_module directory. –save is optional, it is just to update dependencies 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 ..

Project File Structure

To start with this Example you need to create a directory named pages in your project and create two files FirstPge.js and SecondPage.js in it.

Code

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

App.js

//This is an example of Finish Current Screen while Navigating to Next Screen//
import React, { Component } from 'react';
//import react in our code.
import { StyleSheet, Text, View, Button } from 'react-native';
//import all the components we are going to use.

//Import React Navigation
import { createSwitchNavigator, createAppContainer } from 'react-navigation';

//import createSwitchNavigator in our project
import FirstPage from './pages/FirstPage';
import SecondPage from './pages/SecondPage';

//import all the screens we are going to switch 
const App = createSwitchNavigator({
  //createSwitchNavigator will not store your old screen in stack like createStackNavigator
  //So all the screen that comes in createSwitchNavigator will appear once in a whole session
  FirstPage: { screen: FirstPage },
  SecondPage: { screen: SecondPage },
});
export default createAppContainer(App);

Open pages/FirstPage.js in any code editor and replace the code with the following code

FirstPage.js

// First screen
import React, { Component } from 'react';
//import react in our code.
import { StyleSheet, View, Button, Text } from 'react-native';
//import all the components we are going to use.
export default class FirstPage extends Component {
  render() {
    return (
      <View style={styles.MainContainer}>
        <View style={{ marginBottom: 20 }}>
          <Text style={styles.TextStyle}>This is First Screen</Text>
        </View>
        <Button
          onPress={() => this.props.navigation.navigate('SecondPage')}
          //Click to go to second screen
          title="Go to Next Screen"
        />
      </View>
    );
  }
}
const styles = StyleSheet.create({
  MainContainer: {
    justifyContent: 'center',
    flex: 1,
    margin: 10,
  },
  TextStyle: {
    fontSize: 20,
    textAlign: 'center',
    color: '#000',
  },
});

Open pages/SecondPage.js in any code editor and replace the code with the following code

SecondPage.js

// Second screen
import React, { Component } from 'react';
//import react in our code.
import { StyleSheet, View, Text } from 'react-native';
//import all the components we are going to use.
export default class SecondPage extends Component {
  render() {
    return (
      <View style={styles.MainContainer}>
        <Text style={styles.TextStyle}>This is Second Screen</Text>
      </View>
    );
  }
}
const styles = StyleSheet.create({
  MainContainer: {
    justifyContent: 'center',
    flex: 1,
    margin: 10,
  },
  TextStyle: {
    fontSize: 20,
    textAlign: 'center',
    color: '#000',
  },
});

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

Android

    

IOS

    

 

Output in Online Emulator

That was the React Native Switch Navigator. 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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