Implementing a Search Function in React Native

In this tutorial, we will learn how to implement a search function in a React Native app. This will allow users to search for specific items within a list or database, making it easier to find the information they need.

1. Setting up the project

First, make sure you have Node.js and npm installed on your machine. Then, create a new React Native project using the following command:

npx react-native init SearchFunctionApp

2. Creating the search input

In your React Native component, add an input field where users can enter the search query. This can be done using the TextInput component from the ‘react-native’ package.


import React, { useState } from 'react';
import { View, TextInput } from 'react-native';

const SearchFunction = () => {
const [searchQuery, setSearchQuery] = useState('');

return (

setSearchQuery(text)}
value={searchQuery}
/>

);
}

export default SearchFunction;


3. Filtering the data

Next, we need to filter the data based on the search query entered by the user. This can be done using the JavaScript filter method to filter an array of items.


const data = [
{ id: 1, name: 'Item 1' },
{ id: 2, name: 'Item 2' },
{ id: 3, name: 'Item 3' },
// ... more items
];

const filteredData = data.filter((item) =>
item.name.toLowerCase().includes(searchQuery.toLowerCase())
);


4. Displaying the results

Finally, we can display the filtered results to the user. This can be done using the FlatList component from the ‘react-native’ package to render a list of items.


import { FlatList, Text } from 'react-native';

const SearchFunction = () => {
// ... (previous code)

return (

setSearchQuery(text)}
value={searchQuery}
/>
item.id.toString()}
renderItem={({ item }) => {item.name}}
/>

);
}

export default SearchFunction;


With these steps, you have successfully implemented a search function in your React Native app. Users can now search for specific items within a list, making it easier to find the information they need.