React Native Pass Value From One Screen to Another Using React Navigation

Passing the value from one screen to another is one of the most useful things while we have an application which needs to communicate between the different screens. We can easily pass the data between different activities easily using the this.props.navigation.navigate() which is used to navigate between different screens. In the same method, we can easily pass the value and can get it from other screens.

This example will work for the React Navigation Version 3+. If you are using Version 2+ then please find the comments in the code for the suitable changes or can see our old post React Native Navigation Version 2+ for the help.

In our example below, we will pass an input taken from the first screen to the second screen.

To pass the value between different activities

  1. Pass params to a route by putting them in an object as a second parameter to the navigation.navigate function from First Screen. Using :
  2. Read the params in your Second screen. Using:

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
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

Run the following commands

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.

Linking of Dependencies

After installing the dependencies you need to link it with your project using

After linking the dependency if you face  Could not Compile Settings File project/android/settings.gradle error while building and installing the project then you can find the solution here.

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.

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

App.js

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

FirstPage.js

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

SecondPage.js

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).

     

This is how you can pass the value from one screen to another screen. If you have any doubt 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!

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