Get Application State using AppState in React Native

Get Application State using AppState in React Native

This is an example to Get Application State using AppState in React Native. React Native AppState let you know the currents state of the application. It will give you the information that Application is in the foreground or in the background, and will notify you on the change of state. AppState is frequently used to determine the intent and proper behavior when handling push notifications.

App States

React Native AppState will provide you the following different App states:

  • active – The app is running in the foreground
  • background – The app is running in the background. The user is either:
    • using another app
    • on the home screen
    • [Android] on another Activity (even if it was launched by your app)
  • inactive – This is a state that occurs when transitioning between foreground & background, and during periods of inactivity such as entering the Multitasking view or in the event of an incoming call

To Import AppState in Code

To add AppState Listener

In this Example, we will see how to know the application status using the AppState. 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.

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

App.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).

Android

      



IOS

            

That was the React Native AppState. If you have any doubt or you want to share something about the topic you can comment below or contact us here. The remaining components will be covered in the next article. Stay tuned!

Hope you liked it. 🙂

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