React Native Button

React Native Button

This post will show you How to Make a Button in React Native. React Native Button component to perform a click event. It is in one of the UI control components for handling touches. If you want to use a simple button to click and show result then Button is enough but if you want a stylish button then there are some limitations which make us suggest you use alternates like TouchableOpacity which are very easy to use and will provide you to style better.

Button has the prop “color” to change the color but other than that you can not style it as Button does not support “style” prop.

You can’t set text the like <Button>txt</Button> but only via the title property <Button title="txt" />

To Import Button in the Code

import { Button} from 'react-native'

Render Using

<Button 
    onPress={handlerFunction} 
    title="Click Here"
    color="#0000ff"/>

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 command line interface to make our React Native App.

If you have previously installed a global react-native-cli package, please remove it as it may cause unexpected issues:

npm uninstall -g react-native-cli @react-native-community/cli

Run the following commands to create a new React Native project

npx react-native init ProjectName

If you want to start a new project with a specific React Native version, you can use the --version argument:

npx react-native init ProjectName --version X.XX.X

Note If the above command is failing, you may have old version of react-native or react-native-cli installed globally on your pc. Try uninstalling the cli and run the cli using npx.

This will make a project structure with an index file named App.js in your project directory.

Code

Open App.js in any code editor and replace the code with the following code.

App.js

//React Native Button
//https://aboutreact.com/react-native-button/

//import React in our code
import React from 'react';

//import all the components we are going to use
import { StyleSheet, Text, View, SafeAreaView, Button } from 'react-native';

const App = () => {
  const onPressLearnMore = () => {
    //For generating alert on buttton click
    alert('Hello');
  }

  return (
    <SafeAreaView style={{ flex: 1 }}>
      {/* enclose all components in this View tag */}
      <View style={styles.container}>
        <Text>Button Example</Text> 
        {/* Button whith handler function named onPressLearnMore*/}
        <Button
         onPress={onPressLearnMore}
         title="Click Me"
         color="#841584"
        />
      </View>
    </SafeAreaView>
  );
};
const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center'
  }
});
export default App;

To Run the React Native App

Open the terminal again and jump into your project using.

cd ProjectName

1. Start Metro Bundler

First, you will need to start Metro, the JavaScript bundler that ships with React Native. To start Metro bundler run following command:

npx react-native start

Once you start Metro Bundler it will run forever on your terminal until you close it. Let Metro Bundler run in its own terminal. Open a new terminal and run the application.

2. Start React Native Application

To run the project on an Android Virtual Device or on real debugging device:

npx react-native run-android

or on the iOS Simulator by running (macOS only)

npx react-native run-ios

Output Screenshot

Output in Online Emulator

That was the React Native Button. If you have any doubts 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!

Have a happy codding. 🙂