How to improve the performance of a React Native app? A step-by-step guide

You could frequently experience issues with your app’s performance when using React Native. Because of this, you must be mindful of best practices and performance enhancements for your React Native app throughout development to address these problems and provide the end users with a perfect experience.  The development of react native app is better handled by an expert like app developer Dubai to make sure you have the best experience of app development.

Let’s explore the best practices and performance enhancements you may use while creating React Native apps.

1. Offer appropriate navigational techniques.

Although the React Native team has been working on solving navigational difficulties for a while and has made significant progress, there are still specific challenges that need to be resolved for most apps to offer a smooth user experience.

Users may only use your app if the screen navigation is easy. There are four approaches to construct navigation in React Native:

iOS Navigator:

Limited to iOS usage; not helpful in developing Android navigation.

Navigator:

Only suitable for developing prototypes and tiny applications. Needs to function better for applications that are sophisticated or high-performance.

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Experiment in navigation:

It can be utilized in sophisticated systems, but only some people love it because it is challenging to build.

React-navigation:

Many apps make use of and frequently advocate react-navigation.

2. Avoid rendering lengthy lists using the scroll view.

In React Native, several methods exist to show things in scrollable lists. The ScrollView and FlatList components may be used to implement lists in React Native in two typical methods.

Implementing ScrollView is straightforward. As seen below, it is frequently used to loop through a list with finite elements. This strategy works well when there are only a few things on the list.  Conversely, employing ScrollView with a lot of data can significantly impact how quickly the React Native app responds to input.

3. Take care not to pass inline functions as props.

Avoid sending a function inline when supplying it as a property to a component. The function is produced every time the parent re-renders a new reference. To avoid the chance of cross-renders, the function should be declared as a class method or function inside a functional component.

4. Push notifications in a React Native app

To function correctly, a mobile app must support push notifications. Even when the app is not open and actively used, developers can give users critical updates, notifications, and other information. It’s vital to remember that there are numerous approaches to integrating push notifications in a React Native app before we get started. You can consider hiring the services of app developer Dubai for the best app development experience.

The react-native-firebase library, a well-liked and often used library for integrating Firebase services into a React Native project, will be utilized in this article.

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How to improve the performance of React Native app

5. Image Scaling and Resizing

If your React Native app is designed to display a substantial quantity of graphical material or photos, image optimization is crucial for enhancing efficiency. If the resolution and size of the photos are not correctly adjusted, rendering several images may result in significant memory utilization on a device. As a result of memory overload, this can cause your program to crash. The following enhancements can be used to optimize photos in a React Native application:

·       Use PNG as opposed to JPG.

·       Using pictures with lower resolution

·       Using the WEBP format for photos can help iOS and Android devices’ binary sizes shrink by over a third of their original size!

6. Cache Pictures

As a primary offering, React Native. This component is used to show images, although it lacks an immediate fix for problems like:

·       rendering a large number of pictures on one screen

·       ineffectiveness in genera

·       caching performance issues

·       Image jerking

However, utilizing third-party libraries can quickly fix these problems.

7. Stay away from rendering unnecessary and overhead renders.

Like React.js, React Native manages the rendering of components. As a result, React Native apps may benefit from the same optimization strategies as React apps. Avoiding superfluous renderings on the main thread is one optimization method. This is possible in functional components.

8. Utilize the Animated Library and native driver.

The library is one of the most often used methods for rendering animations in React Native applications. Before the animation appears on the screen, it utilizes a native driver to deliver animations across the native bridge. This allows animations to run without interference from stalled JavaScript threads.

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Avoid using arrow functions since they frequently cause unnecessary re-renders. In your routines that render views, avoid using arrow functions as callbacks. When reconciliation occurs, React Native compares a difference. Because the function reference doesn’t match, it cannot utilize previous references because each render creates a new instance of the arrow function.

9. piAvoid Using Higher-Order Components Too Much

Higher-order components are frequently used when an application grows large, and you wish to share common patterns across your components. Even though it might occasionally be debatable, using higher-order components is a good idea since it promotes indirection. However, it could make your code more complex.

Conclusion:

 A framework based on open source called native app is used to build cross-platform mobile applications. At its foundation is JavaScript, which includes building blocks for functionality and displays. As long as you develop apps with performance in consideration from the beginning, it is a well-known high-performance framework that offers an enjoyable experience at scale.