Understanding of How TextInput Works in React Native
In this post, you will get an Understanding of How TextInput Works in React Native. React Native TextInput is a basic component that allows the user to enter text, number, password etc.
It has an onChangeText prop which requires a function which will be called every time when the text changes, and it also has a value prop that can set a default value into it.
To Import TextInput in the Code
1 | import { TextInput } from 'react-native' |
Render Using
1 | <TextInput placeholder = "Email" onChangeText = {this.state.email}/> |
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
Run the following commands to create a new React Native projectnpm install -g react-native-cli
This will make a project structure with an index file named App.js in your project directory.react-native init ProjectName
Open App.js in any code editor and replace the code with the following code.
App.js
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | //This is an example code to understand TextInput// import React from 'react'; //import react in our code. import { TextInput, View, StyleSheet, Text } from 'react-native'; //import all the components we are going to use. export default class App extends React.Component { constructor(props) { super(props); this.state = { username: '' }; } render() { return ( <View style={styles.container}> <Text style={{color: 'cyan'}}>{this.state.username}</Text> <TextInput value={this.state.username} onChangeText={(username) => this.setState({ username })} placeholder={'Username'} style={styles.input} /> </View> ); } } const styles = StyleSheet.create({ container: { flex: 1, alignItems: 'center', justifyContent: 'center', backgroundColor: '#ffffff', }, input: { width: 250, height: 44, padding: 10, marginBottom: 10, backgroundColor: '#ecf0f1' }, }); |
To Run the React Native App
Open the terminal again and jump into your project using.cd ProjectNamereact-native run-androidreact-native run-ios (macOS only).
That was the React Native TextInput. Hope you have understand. 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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