React Native Floating Action Button

React Native Floating Action Button

Here is an example of React Native Floating Action Button. It was first introduced in Android Material Design. When we have to show a ListView and also need a button on the same screen we can use Floating Action Button. Gmail App is the best example where you can see the Floating Action Button. You can also see React Native Action Button with Multiple Option.

To Make Floating Action Button

To make a Floating Action Button we are using TouchableOpacity with the trick in StyleSheet.

TouchableOpacityStyle: {
   //Here is the trick
   position: 'absolute',
   width: 50,
   height: 50,
   alignItems: 'center',
   justifyContent: 'center',
   right: 30,
   bottom: 30,
},

The position property specifies the type of positioning method used for an element.
There are five different position values:

  • static
  • relative
  • fixed
  • absolute
  • sticky

Elements are then positioned using the top, bottom, left, and right properties. However, these properties will not work unless the property position is set first. They also work differently depending on the position value. An element with position: absolute; is positioned relative to the nearest positioned ancestor (instead of position relative to the viewport, like fixed).

For more about the position, you can visit here. Though it is a link to show the CSS position it will work in React Native in the same manner. To start with this example

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

npm install -g react-native-cli

Run the following commands to create a new React Native project

react-native init ProjectName

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

react-native init ProjectName --version X.XX.X
react-native init ProjectName --version react-native@next

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

//This is an example code for React Native Floating Action Button//
import React, { Component } from 'react';
//import react in our code.

import { StyleSheet, View, Image, TouchableOpacity, Alert, Text } from 'react-native';
//import all the components we are going to use.

export default class App extends Component {
  clickHandler = () => {
    //function to handle click on floating Action Button
    Alert.alert('Floating Button Clicked');
  };

  render() {
    return (
      <View style={styles.MainContainer}>
        <Text>Example of Floating Action Button</Text>
        <Text>Click on Action Button to see Alert</Text>
        <TouchableOpacity
          activeOpacity={0.7}
          onPress={this.clickHandler}
          style={styles.TouchableOpacityStyle}>
          <Image
            //We are making FAB using TouchableOpacity with an image
            //We are using online image here
             source={{
uri:'https://raw.githubusercontent.com/AboutReact/sampleresource/master/plus_icon.png',
            }}
            //You can use you project image Example below
            //source={require('./images/float-add-icon.png')}
            style={styles.FloatingButtonStyle}
          />
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  MainContainer: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5F5F5',
  },

  TouchableOpacityStyle: {
    position: 'absolute',
    width: 50,
    height: 50,
    alignItems: 'center',
    justifyContent: 'center',
    right: 30,
    bottom: 30,
  },

  FloatingButtonStyle: {
    resizeMode: 'contain',
    width: 50,
    height: 50,
    //backgroundColor:'black'
  },
});

To Run the React Native App

Open the terminal again and jump into your project using.
cd ProjectName
To run the project on an Android Virtual Device or on real debugging device
react-native run-android
or on the iOS Simulator by running
react-native run-ios (macOS only).

Output Screenshots

   

Output in Online Emulator

 

That was the React Native DatePicker Floating Action Button. If you have any doubts or you want to share something about the topic you can comment below or contact us here. There will be more posts coming soon. Stay tuned!

Hope you liked it. 🙂


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