How to Build an Animated Loader in React Native

Learn how to build an animated loader in React Native using lottie-react-native and react-native-animatable.

React Native is an amazing library for developers looking to build mobile apps with speed. It provides an efficient way of displaying information to the frontend. But before displaying API data, the application has to first inform the user that the data is on its way.

One way to do so is to leverage the power of animations. Thus, it can also give your UI a more vibrant feel.

For example, what do you think gives a better impression? Rendering a piece of text:

RN Animated Text Loader

Or using a vivid animation:

Vivid RN Loader

In the React Native world, a multitude of libraries exists to help you get up and running. In this guide, we will use lottie-react-native and react-native-animatable. This is because they are an absolute breeze to use and well maintained.

Using Lottie

Let’s say that you built a breathtaking graphic using Adobe After Effects and want to render it in your app. But, this is one major flaw: Adobe does not allow you to do that.

This is where lottie-react-native comes in. It allows developers to render their animations without recreating them via code. It only requires a few lines of code to work, thus letting you focus on more important parts of the project.

Installing modules

To install it in your app, run the following terminal commands:

npm i lottie-react-native
npm i lottie-ios@3.1.8

Acquiring assets

You can use your own animations by exporting them with the Bodymovin plugin. But for this guide, we will use the LottieFiles directory. It includes a ton of free animations that you can import in your project.

In this article, I will use the Sleeping Cat animation.

To use your desired animation in your application, first download it in JSON format like so:

Download Lottie in JSON

Next, move this into the assets folder.

Simple usage

To use Lottie, write the following code:

import React from "react";
import { StyleSheet, View, Text } from "react-native";
import LottieView from "lottie-react-native";
import { useState } from "react";
export default function SimpleLottie() {
  return (
const styles = StyleSheet.create({
  animation: {
    width: 100,
    height: 100,

The LottieView component holds our animation config. Here, the source prop tells the location of our asset. Moreover, the autoPlay prop tells Lottie to run the animation on startup.

To render SimpleLottie, write the following code in App.js:

//further code removed..
import SimpleLottie from "./SimpleLottie";
export default function App() {
  return (
    <View style={styles.container}>
      <SimpleLottie />
      <StatusBar style="auto" />
Sleeping Cat Lottie

Conditional rendering in Lottie

We can even perform conditional rendering on our SimpleLottie component. This will simulate loading functionality:

const [show, setShow] = useState(false);

useEffect(() => {
  setTimeout(() => setShow(true), 3000);
}, []);

return (
  <View style={styles.container}>
    {show ?<Text>Finished loading!</Text> : <SimpleLottie /> }
    <StatusBar style="auto" />

In this block of code, we told React to reverse the value of the show Hook after 3 seconds. This will render the Text on the screen.

Sleeping Cat Lottie Loader

Creating a loader component with Lottie

Here, the plan is to show data from Coffee API. While the data is loading, React will display the loading graphic.
Create a file called DataDisplay.js. This component will be useful in displaying list items. Here, write the following code:

import React from "react";
import { StyleSheet, SafeAreaView, FlatList, Text, View } from "react-native";
export default function DataDisplay({ data }) {
  const Item = ({ title }) => (
    <View style={styles.item}>
  const renderItem = ({ item }) => <Item title={item.title} />;
  return (
        keyExtractor={(item) =>}
const styles = StyleSheet.create({
  item: {
    backgroundColor: "yellow",
    padding: 20,
    marginVertical: 8,

A few inferences from this code:

  • We created the Item component and renderItem function. They will work together to render each individual element in the array
  • Later on, we used the FlatList component to render the list

Next, alter your App.js file like so:

export default function App() {
  const [data, setData] = useState(null);
  const fetchData = async () => {
    const resp = await fetch("");
    const data = await resp.json();
  useEffect(() => {
  }, []);
  return (
    <View style={styles.container}>
      {data ? <DataDisplay data={data} /> : <SimpleLottie />}
      <StatusBar style="auto" />

In the above block of code, we told React to fetch data from the API and store the response into the data Hook. After that, React checks whether the response has loaded (data has a value).

If true, the API data is shown. Otherwise, React Native renders the SimpleLottie animation.

This will be the output:

RN Loader if API Data is True

Using react-native-animatable

The react-native-animatable library allows the developer to create their own transitions and animations through the declarative API. This is suitable for loaders and splash screens.


Run the following terminal command to get the package:

npm install react-native-animatable 

Simple usage

Create a file called SimpleAnimatable.js. Here, write the following block of code:

import * as Animatable from "react-native-animatable";
import React from "react";

export default function SimpleAnimatable() {
  return (

Let’s dissect this code piece by piece.

  • The Animatable.View component allows our custom component to have animation functionality
  • Our Text element will have bounce-like behavior. Moreover, we’ve also set the iterationCount property to infinite . This makes the animation loop forever

This will be the output:

Animated Loader Bounce RN

You can even get a “flash-like” animation like so:

Flashing Loader in RN

Creating a loader component with react-native-animatable

This step should be straightforward. You can simply use conditional rendering:

{data ? <DataDisplay data={data} /> : <SimpleAnimatable />}
RN Loader Component


In this article, we covered two common strategies for building animations in React Native. In my own projects, I use Lottie because it is rock solid and extremely easy to use.

Furthermore, Lottie includes an imperative API which allows for more granular control over the chosen animation.

Thank you so much for reading!

Original article source at

#reactnative #react

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How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

  • Performance: It delivers optimal performance.
  • Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
  • UI design: React Native enables you to design simple and responsive UI for your mobile app.
  • 3rd party plugins: This framework supports 3rd party plugins.
  • Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

  • Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
  • Near-native user experience: React Native provides several native components, and these are platform agnostic.
  • The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

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Cost is a major factor in helping entrepreneurs take decisions about investing in developing an app and the decision to hire react native app developers in USA can prove to be fruitful in the long run. Using react native for app development ensures a wide range of benefits to your business. Understanding your business and working on the aspects to strengthen business processes through a cost-efficient mobile app will be the key to success.

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How much does it cost to develop a React Native mobile app?

React Native allows developers to develop mobile apps that have compatibility with Android, iOS & other operating systems. Due to the features like Native-like functionality and single code reusability and the access of various frameworks in the market, React Native has excelled as the most suitable framework for cross-platform mobile app development.

Why Do Businesses Prefer React Native App Development?

React Native is integrated with JS library that works as the fundamental for developing the app UI. Most businesses choose for developing React Native apps just due to their cross-platform & open-source features. A few further reasons why entrepreneurs & developers choose React Native app development include:

• Lowered Expedition Time

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React Native cost depends widely on the complexity of a project or the app requirements. The price may also vary based on business requirements. React Native app development per hour can cost from $20 and $30 per hour in India. It can vary as per different locations.

Is React Native a good choice for mobile apps development?

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