How to check file is exist or not in react native

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This article will help you to check your file exist or not in react native using react-native-fs library.

Here, we are use react-native-fs library to check file available or not.

Let’s start today’s topic How to check file is exist or not in react native

react-native-fs provide exists component to verify file available or not in device it works on both platform (android, and iOS).

exists(filepath: string): Promise<boolean>

react-native-fs exists function required filepath and it wil return boolean values with promise whitch means you have to use await for get proper result.

Installation

First we have need to install react-native-fs library on our project.

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1npm install react-native-fs --save

Extra steps for iOS Installation

• add below code to your podfile

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1pod 'RNFS', :path => '../node_modules/react-native-fs'

• install library

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1pod install

react-native-fs exists example

Here, i am sharing how i check file exists or not in device, you have to just pass filepath to exists function with await.

let’s understand with code example.

• add below code top of your file

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1// require the module
2var RNFS = require('react-native-fs');

• exists usebility

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1async function verifyFiles(filepath) {
2    let exists = await RNFS.exists(filepath);
3    console.log("exists", exists); // true or false
4}

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