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React Native Articles
Found 23 articles
Difference Between React Native and React
React is a well-known JavaScript library mostly used to build dynamic and interactive user interface applications for the web. It is a creation of Facebook, which lets developers create reusable UI components and also provides a virtual DOM on which rendering is to be done. React Native is a new concept that applies the logic of React to developing mobile applications. That means developers can write mobile apps for both iOS and Android operating systems. Using React Native, one would get identical compiling with a single codebase. Using native components instead of elements from the web gives a real ...
Read MoreHow to install yup in react native in JavaScript?
The Yup is an NPM package we can install in the react-native application. It is used to validate the form values stored in a single object. Also, we can add different kinds of validations to the different form fields using the Yup. Users can execute the below command in the project directory to install the Yup in react native. npm i Yup Users can use the below command if they are using the Yarn. yarn i Yup Syntax Users can follow the syntax below to use the Yup for the form validation in the react-native application. const schema ...
Read MoreHow to display Material Chip View in React Native?
To display chips in the UI, we are going to make use of React Native Paper Material Design.Install react native paper as shown below −npm install --save-dev react-native-paperThe chip component looks as follows on the UI −The basic chip component is as follows −Chip NameThe basic properties of chip are as follows −PropsDescriptionmodeThe values for mode are flat and outlined. With flat mode you will not get a border and with outlined the border for the chip will be displayed.iconThe icon to be given to the chip.selectedThe values are true/false. If true the chip will be selected.selectedColorColor to be given ...
Read MoreHow to show a checkbox in reactnative?
Checkboxes is a common component that we often use on the UI. We do have some cool ways of showing checkboxes in reactnative.The core react-native package does not have checkbox support and you need to install a package to work with it.Following package has to be installed to display checkbox −npm install --save-dev react-native-paperThe basic checkbox component is as follows −Let us now see some important properties on checkbox −PropsDescriptionstatusThe value that can be given to status are checked, unchecked and indeterminate.disabledThe value is boolean.It can be used to enable/disable the checkbox.onPressThe function that will be called when the checkbox ...
Read MoreHow to display date and time picker in ReactNative?
To display date and time picker in your app you have to install a package as shown below −npm install @react-native-community/datetimepicker --saveOnce you are done installing, let us now proceed on how to display a Datepicker first.Example: DateTimePicker in ReactNativeImport the datetimepicker component first as shown below −import DateTimePicker from '@react-native-community/datetimepicker';A basic DateTimePicker component looks as follows −Here are some of the important properties of DateTimePicker.PropsDescriptionmodeDefines the type of picker you want. The options are date, time, datetime and countdown.From above options datetime and countdown are available only on iOS.displayThe values for Android are default, spinner, calendar and clock. For ...
Read MoreExplain ReactNative SwitchSelector Component
SwitchSelector component is similar to a radio toggle button. It allows you to select with more than 2 values.To work with SwitchSelector you have to install the package as shown below −npm i react-native-switch-selector --save-devThe basic SwitchSelector looks as follows − console.log(`value selected is : ${value}`)} />Here are some important properties of SwitchSelector −PropsDescriptionoptionsAn array with label, value and imageicon id required.initialThe initial item from the array that will be selected.valueThe switch value that will be available with onPress eventonPressThe event with callback function that will get called when the Switch is changed.fontSizeThe fontSize to be considered for the label.selectedColorThe ...
Read MoreHow to handle the error “Text strings must be rendered within a <Text> component” in ReactNative?
While developing your app you can come across the error as stated above. Here is the code that gives the error −Exampleimport React from "react"; import { Image , Text, View, StyleSheet } from "react-native"; export default class App extends React.Component { render() { return ( ); } } const styles = StyleSheet.create({ container: { paddingTop: 50, paddingLeft: 50, }, stretch: { width: ...
Read MoreHow to handle errors while working with Navigation in ReactNative?
Problem: How to handle the error “A navigator can only contain 'Screen' components as its direct children” while working with Navigation in ReactNative?SolutionWhile working on your app you may come across issues like stated above. Here will understand why such error comes up and what can be done to avoid it.Here is the code that gives us the error −ExampleApp.jsimport * as React from 'react'; import { NavigationContainer } from '@react-navigation/native'; import { createStackNavigator } from '@react-navigation/stack'; import { Button, View, Alert, Text } from 'react-native'; const Stack = createStackNavigator(); const HomePage = ({ navigation }) => { return ...
Read MoreHow to handle navigation from one page to another in react native?
While working on the app, we would like to switch from one screen to another and that is handled by react navigation.To work on navigating pages we need to install few packages as follows −npm install @react-navigation/native @react-navigation/stack npm install @react-native-community/masked-view react-native-screens react-native-safe-area-context react-native-gesture-handlerOnce you are done with the above installation let us now proceed with the next setup of navigation in react native.In your app project create a folder called pages/ . Create 2 js files HomePage.js and AboutPage.js.pages/HomePage.jsimport * as React from 'react'; import { Button, View, Alert, Text } from 'react-native'; const HomeScreen = ({ navigation }) ...
Read MoreExplain VirtualizedList component usage in ReactNative?
The VirtualizedList component is best when your list is massively big in size.VirtualizedList helps in better performance and memory usage.As user scrolls, the data is shown to the user.The basic component of VirtualizedList is as follows &minuns;Important VirtualizedList PropertiesPropsDescriptionrenderItemThe items from the data will be rendered inside the VirtualizedList.dataThe data to be displayed.getItemFunction that will fetch the individual item from the data.getItemCountGets the count of the data items.initialNumToRenderNo of times to be rendered at the start.keyExtractorThe unique key to be considered for each item for the specified index.Here is a working example of VirtualizedList.Example: Display of data using VirtualizedListTo work ...
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