Knowledge Factory

Felicitations! You are standing in the right place! In this example , we initially set the Switch value to false and exhibit a Text with 'No'. When the value of Switch change to true by calling onValueChange the Text component is reset to 'Yes'. Our screen will look like this − Implementation First, You must set up your local development environment. Follow the below link to set up your local environment.   https://www.knowledgefactory.net/2021/01/react-native-environment-setup-create-demo.html After executing the commands mentioned in this  link , a folder with a specified name is created with the following contents. Import StyleSheet, Switch, View, and Text  component in our project. import React from 'react' ; import {StyleSheet, Switch, View, Text } from 'react-native' ; Declare State The state is generally initialized in the constructor and then call setState when we want to change it. state = { married: false }; Engender a Root

Felicitations! You are standing in the right place! Today , we engender a SectionList with title and data. The section prop is utilized to engender the list of title and data values. The renderSectionHeader exhibits the header section of the list view. Our screen will look like this − Implementation First, You must set up your local development environment. Follow the below link to set up your local environment.   https://www.knowledgefactory.net/2021/01/react-native-environment-setup-create-demo.html After executing the commands mentioned in this  link , a folder with a specified name is created with the following contents. Import SectionList, StyleSheet, Text, and View component in our project. import React from 'react' ; import { SectionList, StyleSheet, Text, View } from 'react-native' ; Engender a Root View in render’s return block. render() { return ( <View style={styles.container}> <SectionList se

Felicitations! You are standing in the right place! Today, we will show you how to  Add a Floating Action Button to Mobile App. Our starting screen will look like this − If we click the button, the alert will open - Implementation First, You must set up your local development environment. Follow the below link to set up your local environment.   https://www.knowledgefactory.net/2021/01/react-native-environment-setup-create-demo.html After executing the commands mentioned in this  link , a folder with a specified name is created with the following contents. Import StyleSheet, View, Image, TouchableOpacity, and Alert component in our project. import React from 'react' ; import { StyleSheet, View, Image, TouchableOpacity, Alert } from 'react-native' ; Create a function named as MyFunction(). We would call this function on the Floating Action Button onPress event. MyFunction = () => { Alert.alert( "Wow! Floating Button Clicked" ); } Engender a Root View in re

In this section,  we will show you how to utilize the modal component in React Native. Our starting screen will look like this − If we click the button, the modal will open - The React Native Modal is a type of View component which is utilized to present the content above an enclosing view. To utilize the Modal component in our application, we require to import Modal from the react-native library. Implementation Follow the below link to set up your local environment. React Native - Environment Setup After executing the commands mentioned in this link, a folder with a specified name is created with the following structure. Next, we are going to edit the App.js file and write the below code. import React from 'react' ; import { TouchableOpacity, StyleSheet, Text, View, Button, Modal } from 'react-native' ; export default class App extends React.Component { state = { isVisible: false , } render() { return ( <View style={styles.con

In this article,  we will talk about State  and Props State React components has a built-in state object. The state is mutable. This designates that the state can be updated in the future. The state is generally initialized in the constructor and then call setState when we want to change it. In this example, we engender a Text component with state data. The content of the Text component will be updated by clicking a button. The event onPress calls the setState, and it updates the state "knfState" text. First, You must set up your local development environment. Follow the below link to set up your local environment.   https://www.knowledgefactory.net/2021/01/react-native-environment-setup-create-demo.html After executing the commands mentioned in this  link , a folder with a specified name is created with the following contents. In this example, we engender a Text component with state data. The content of the Text component will be updated by clicking a button. The event on