Make Search Bar Filter for List View Data in React Native

Make Search Bar Filter for List View Data in React Native

This is an example to Make Search Bar Filter for List View Data in React Native. Basically, We will make a React Native FlatList with real-time searching ability. If we have a Long list in the app then it is very inconvenient to search the required data by scrolling the whole list.

Let’s take an example of E-Commerce which has the number of products and we have to choose our required product. You can imagine how tough it will be to search for a product by scrolling. So at this point, we need a Search Bar Filter on Listview so that we can easily search the required data and can save time.

In this Example of React Native Search Bar Filter on Listview, we are going to use a FlatList with a TextInput to work as the search bar.

For Real-Time Searching in List View using Search Bar Filter

The logic is simple

  • We will load the list from the network call and then show it to the user.
  • The user can search the data by entering the text in TextInput.
  • After inserting the text SearchFilterFunction will be called
  • We will compare the list data with the inserted data and will make a new Data source.
  • We will update the data source attached to the ListView.
  • It will re-render the list and the user will be able to see the filtered data.

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).

      

This is how you can make a Search bar filter on List View in React Native. 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. 🙂

4 thoughts on “Make Search Bar Filter for List View Data in React Native”

  1. why text input write occur error .
    Native Textinput (hjugbjuuj jkhugug uyguih{ here is my text value}) is 4 event ahead of js-try to make your js faster.

    • Have you seen this thread(https://github.com/facebook/react-native/issues/4845) which tells the problem is due to the rendering of the function on every key down in the input very fast which means if you are typing very fast and doing something with the input every-time the input changes then it lacks sometime and gives this error/warning. But there is also a point where each one agreed that this comes with the emulator or with the dummy device due to the memory issue of the emulator but never comes in the real device. Have you also felt that?
      If you want to execute the function on input value each time like real time search then you can you can use setTimeout with one second of interval and can use them which means you are waiting for a second to change in the value this way you can reduce the calling of function.

    • For this, you have to make an API which will have the functionality to search the keyword from the MySQL database and from the SearchFilterFunction you have to call the API each time when the user enters any character.

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