Dynamically Change React Navigation Value – Update navigationOptions

Dynamically Change React Navigation Value – Update navigationOptions

This is an Example to Dynamically Change React Navigation Value – Update navigationOptions. You will see how to change the Navigation Option values dynamically from the click of a button or using a state. This can be easily done by setting the navigation params.

This example will be helpful if you want to change the navigation options like navigation text, navigation text color, background color etc on a click of a button or on some certain condition. For example, if you are planning to make an application in which the user can change the theme of the application then here is an example for you to Dynamically Change React Navigation Value.

To Dynamically Change navigationOptions Value

We can change the Action Bar Text, Background Color and Text Color from the click of any Button by setting the props of navigation using

In this example, we will use react-navigation to make the navigation bar on the top of the screen and then with the help of three different buttons we will change the color of the navigation bar. 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 and to make a default navigation header you need to install react-navigation and react-native-gesture-handler dependencies.

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

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.

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

Project File Structure

To start with this example you need to create a directory named pages in your project and create a files HomeActivity.js in it.

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

App.js

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

HomeActivity.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 change navigation options. 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!

Hope you liked it. 🙂

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