Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
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 More
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 More
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 More
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 More
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 More
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 More
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 More
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 ... Read More
The React native picker component is similar to a dropdown that allows you to select a value from the multiple options given.The basic Picker component is as follows − ... ... ... To work with picker component, you need to import it first from react-native as follows −import { Picker } from 'react-native'Picker PropertiesSr.NoProps & Description1enabledIt takes a boolean value. The picker will be disabled if set to false and the user will not be able to select the item.2itemStyleStyling to be applied for the items.3modeThis property ... Read More
The SafeViewArea component is meant to display your content in the safe boundaries of the device.It takes care of adding padding and also makes sure to not cover your content with navigation bar, toolbar, tab bars etc. This component is available only for iOS devices and here is a working example of the same.Let us understand with the help of an example the advantage of using SafeAreaView.Consider the following example that makes use of the View component to display text “Welcome to Tutorialspoint!”.ExampleDisplay Text “Welcome to Tutorialspoint!” inside View componentThe style flex: 1 is used on the View component. The ... Read More