React Native Navigation (Router)Switch from One Screen to another

React Native Navigation

React Native Navigation

React Native Navigation

Hello Guyz! In This Blogging series of react-native. today i am gonna show you an example for React Native Navigation (Router) which helps you to Switch from One Screen to another. We will use react-navigation library for the Navigation here.

Though We all know that React Native Navigation is used for switching from one screen to another in the crave manner. This react-navigation solution is written entirely in JavaScript.

To Navigate

this.props.navigation.navigate('SecondPage')

In this example, we will navigate from the first screen to second on a click of a button. So Let’s get started.

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 switch between the screens we need to add react-navigation in our application.

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

cd ProjectName

1. Install react-navigation dependency to import createAppContainer

npm install react-navigation --save

2. Install react-native-gesture-handler dependency to support gesture navigation

npm install react-native-gesture-handler --save

3. Install react-navigation-stack to import createStackNavigator

npm install react-navigation-stack --save

These commands will copy all the dependencies into your node_module directory.

CocoaPods Installation

After the updation of React Native 0.60, they have introduced auto-linking so we do not require to link the libraries but need to install pods.

In this example, we need to install the pods for react-native-gesture-handler.

Please use the following command to install CocoaPods

cd ios && pod install && cd ..

Project Structure

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

Code

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

App.js

//This is an example code for Navigator// 
import React, { Component } from 'react';
//import react in our code. 

//For react-navigation 3.0+
//import { createAppContainer, createStackNavigator } from 'react-navigation';
//For react-navigation 4.0+
import { createAppContainer } from 'react-navigation';
import { createStackNavigator} from 'react-navigation-stack';

import FirstPage from './pages/FirstPage';
import SecondPage from './pages/SecondPage';
//import all the screens we are going to switch 
const App = createStackNavigator({
  //Constant which holds all the screens like index of any book 
    FirstPage: { screen: FirstPage }, 
    //First entry by default be our first screen if we do not define initialRouteName
    SecondPage: { screen: SecondPage }, 
  },
  {
    initialRouteName: 'FirstPage',
  }
);
export default createAppContainer(App);

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

FirstPage.js

//This is an example code for Navigator// 
import React, { Component } from 'react';
//import react in our code. 
import { StyleSheet, View, Button} from 'react-native';
//import all the components we are going to use.

export default class FirstPage extends Component {
  static navigationOptions = {
    title: 'First Page',
    //Sets Header text of Status Bar
    headerStyle: {
      backgroundColor: '#f4511e',
      //Sets Header color
    },
    headerTintColor: '#fff',
    //Sets Header text color
    headerTitleStyle: {
      fontWeight: 'bold',
      //Sets Header text style
    },
  };

  render() {
    const { navigate } = this.props.navigation;
    return (
      <View style={styles.container}>
        <Button title='Go next'
        onPress={() =>navigate('SecondPage')}
        />
      </View>
    );
  }
}
const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});

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

SecondPage.js

//This is an example code for Navigator// 
import React, { Component } from 'react';
//import react in our code. 
// Appfinz Technologies
import { StyleSheet, View, Text} from 'react-native';
//import all the components we are going to use.

export default class SecondPage extends Component {
  static navigationOptions = {
    title: 'Second Page',
    //Sets Header text of Status Bar
  };
  render() {
    const { navigate } = this.props.navigation;
    return (
      <View style={styles.container}>
        <Text>You are on SecondPage</Text>
      </View>
    );
  }
}
const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    margin:50,
    alignItems: 'center',
    justifyContent: 'center',
  },
});

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).

Check It Here