React Native is a JavaScript framework that allows developers to build mobile apps for Android and iOS using a single codebase. It was created by Facebook in 2015 for internal use and has since become popular for its cross-platform capabilities. React Native allows businesses to develop higher quality, faster loading mobile apps at a lower cost compared to native development. Performance optimization techniques for React Native apps include removing unnecessary logging, ensuring animations run at 60 frames per second, delaying heavy calculations, using FlatLists over ScrollViews, and compressing large files.

1. HOW REACT NATIVE HAS
CHANGED WEB AND MOBILE
APPLICATION DEVELOPMENT
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2. EVERY BUSINESS NEEDS A MOBILE APP, AS NOWADAYS THE
WORLD’S LARGEST POPULATION IS USING MOBILE PHONES.
BUT IT IS CRITICAL FOR MANY BUSINESSES TO DECIDE WHAT
PLATFORM TO USE TO DEVELOP THEIR APP THOUGH. IT CAN
BE A TOUGH CHOICE. REACT NATIVE IS THE SOLUTION TO THIS
DILEMMA.
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3. What React Native
Application is?
React Native is a javascript framework in order to develop
hybrid mobile apps that can run on both cross mobile platforms
i.e. Android and iOS. It is launched in 2015 by Facebook for their
personal use. Later on, its wide range of platform-independent
functionality has taken all mobile app development worlds into
a new dimension.
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4. Why React Native App is best for your business?
Just think about it how with the help of a single codebase you can get an app that performs better on
both iOS and Android devices. It saves you a large amount of capital which you give separately for
both iOS and android app for your business. React Native apps are way more attractive and it’s
amazing UI’s, works great, and seamlessly integrates with the user’s mobile OS.
The main reason to choose React Native for Apps is - its loading speed of animations and content
which is around 60 fps(frames per second) which helps an app look more native and makes smooth
UI/UX for users.
Frames are something which tricks your mind perceiving smooth motion, or in other words how fast
your app load while going one screen to others. If the speed of loading content on your app is slow
then there are high chances users won’t stick on the app for more than 20 seconds.
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5. Things that should be kept in
mind to boost the performance
of your React Native Application.
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6. Badly written JavaScript:-
Remove console.log() statements, lots of developers use
console. logs when debugging, but it can cause a
bottleneck in the JavaScript thread. So it’s important to
remove all console.log calls before bundling our React
Native App.
Frame rate matters:- Use tools like Interaction manager in
order to ensure that content and animation are loading at
60fps, a smooth interface is all that’s what makes an app
worthy.
Heavy calculations could slow down your app’s
performance:- One of interaction manager API’s
runAfterInstallations will help us delay logic and heavy
calculations like fetching data from execution until the
navigation animation complete.
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7. Code :- InteractionManager .runAfterInteractions( ( ) =>
{ } );
State management is necessary:- While developing a
React application it may not be clear how to structure
the data in a proper manner.
In react, native application development data can be
stored in two ways locally or globally. There are some
advantages and disadvantages to both. Also, it can’t be
clear where to put the data right away. The most
common library for state management in React is
Redux which helps developers to the maintainability of
code. Simply put data in small components while
developing apps on react.
Redux contains hooks the “usState“ hook for functional
components or “setState” for class-based components.
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8. Use of “flatlist” rather than ListView or Scrollview:- we
all use apps that contain sometimes a scrolling option to
see the list.
React Native gives us the option named Flatlist to
specifically create lists in order to handle the large list,
also include many features to handle the data in the list
which increase the performance of the app and it is way
better than ScrollView or Listview.
Loading of animation on Native threads:- One should
always put {useNativeDriver: true } code in order to
make loading of any animations in our app smoothly this
helps to load animation on the native thread instead of
javascript thread which makes execution easier.
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9. Large files compression:-
• Use JSON data compressions to large JSON data
sets
• Image compression is important as some are very
large in size and take more time to load which slows
down your app.
Using third party API:- Sometimes it’s important to
fetch data from third party API’s which need to call an
API this can cause a delay in loading and re-rendering
of data. It should be good to call an API after render(),
i.e using componentDidMount() to avoid any re-
rendering of data and code complexity.
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10. Contact Us
For More Detail
info@engineermaster.in
0731-4980455
www.engineermaster.in
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11. THANKS FOR
WATCHING
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