React Native is a famous JavaScript-based portable application structure that permits you to fabricate locally delivered versatile applications for iOS and Android. The system allows you to make an application for different stages by utilizing the equivalent codebase.React Native was first delivered by Facebook as an open-source project in 2015. In only two or three years, it became one of the top arrangements utilized for the versatile turn of events. React Native development is utilized to control a portion of the world’s leading mobile apps, including Instagram, Facebook, and Skype.

What is React Native?

In the most straightforward terms, React Native isn’t a ‘newer’ variant of React, in spite of the fact that React Native uses it. Both React and React Native utilize a combination of JavaScript and a unique markup language, JSX. In any case, the linguistic structure used to deliver components in JSX parts varies among React and React Native. Furthermore, React utilizes some HTML and CSS, though React native permits the utilization of local portable UI components.

React vs. React Native

React Native (otherwise called RN) is a famous JavaScript-based portable application structure that permits you to fabricate locally delivered versatile applications for iOS and Android. The system…

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Top 10 Companies to Hire React Native Developers in India

Navigation refers to the interactions that allow users to navigate across, into, and back out from the different pieces of content within your app. Possibly the most common style of navigation in mobile apps is tab-based navigation. This can be tabs on the bottom of the screen or on the top below the header (or even instead of a header) There are some steps to implement Tab navigation in React Native

First of all create the new project and install the package for Tab Navigation <code><a href="https://github.com/react-navigation/react-navigation/tree/main/packages/bottom-tabs" rel="noopener noreferrer" target="_blank">@react-navigation/bottom-tabs </a> </code>:For CLI : npm install <a href="http://twitter.com/react" rel="noopener noreferrer" target="_blank">@react </a>-navigation/bottom-tabsFor yarn: yarn add <a href="http://twitter.com/react" rel="noopener noreferrer" target="_blank">@react </a>-navigation/bottom-tabs

Step 1:

Impo rt the Following components into your App.js File, first install Navigation container ‘@react-navigation/native’ and then according the first step install <code dir="ltr"><a dir="ltr" href="https://github.com/react-navigation/react-navigation/tree/main/packages/bottom-tabs" rel="noopener ugc nofollow">@react-navigation/bottom-tabs </a>. </code>

Step 2:

Now create Functions for how many tab navigators you want to have in your tab navigation . Just like this example , you can create another homescreen.js file for theses function, as these are two different screens, import them, and call them in default function.

Step 3:

Now create the constructor for Tab navigation and to list the tabs in default function App. Use “Navigation Container”, responsible for managing your app state and linking your top-level navigator to the app environment. ThenTab.Screen tag to call the HomeScreen function and Setting Function

Step 4:

Usually tabs don’t just display one screen — for example, on your Twitter feed, you can tap on a tweet and it brings you to a new screen within that tab with all of the replies. You can think of this as there being separate navigation stacks within each tab, and that’s exactly how we will model it in React Navigation.

A native stack navigator for each tab

Navigation refers to the interactions that allow users to navigate across, into, and back out from the different pieces of content within your app. Possibly the most common style of navigation in…

How to add tab navigation in React Native

⚛️React used by 40% of the developers (Stackflow Survey 2021)💙React tops the list of most wanted frameworks (Stackflow Survey 2021)🌟React boasts over 176k Github stars📈React is currently search at the top front-end. (Google Trends)

React JS Magical Usage Statistics 🚀  

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<ul><li>Easier learning curve</li><li>Components based architecture</li><li>Virtual DOM</li><li>Performance</li><li>Simplicity</li><li>Reusability</li><li>Stability</li><li>Flexible Architecture</li><li>Technology Adoption</li></ul>

9 Reasons to love React JS 

<ul><li>There are two realms: JS and Native which are not really aware of each other and do not share the same memory</li><li>The communication is async through the bridge between the two realms</li><li>It is slow to transfer large chunks of data. Since the memory is not shared, all the data passed between js and native is a new copy</li><li>No way to update the UI in a sync way. </li><li>The library repo is HUGE. It makes the library heavier and also making it slower to contribute code from outside or release new fixes</li></ul>

Some of the main disadvantages of the current structure

Don’t get them wrong, Facebook is using React Native by themselves for the Marketplace app, Ads app and more which servers millions of daily users. In addition, some well-known companies like Wix, Bloomberg, Tesla, Zynga and much more using RN in production with the current architecture. But all of the above companies and especially Facebook got to a point where they understood that if they want to make a better native experience and better developer experience they have to do a huge move and change and this is exactly what they are in a process of doing (part of it is already completed)

The current Arhitecture

Now, let’s explain about all the new words you see here: JSI, Fabric, Turbo ModulesJSI is gonna replace the BridgeJSI (Will replace the Bridge) — Its purpose is to make the JS and Native are aware of each other. There won’t be any need to serialize JSON through the bridge and even more than that — there won’t be a bridge! It will allow to expose native object as js objects and vice-versa. It will also expose an API for synchronous calling on this object on both sides. Actually, all the rest of the architecture will be built on top of that (Fabric, Turbo Modules which will be explained next).

The New Arhitecture

Fabric — the new name for the UIManager which will be responsible for the native side. The biggest difference now that instead of communicating the JS side by the bridge, it will expose its native function using the JSI so the JS side and vice-versa can communication directly those ref functions. Better and efficient performance and passing data between sides.

Fabric

Remember the native modules from the last post? Text, Image, View. So their new name is Turbo Modules. They have the same purpose but implemented and acting differently. First, they are lazy-loaded (only when the app needs them) comparing to loading all of them on the launch time. In addition, they are also exposed using the JSI so JS holds a ref to use them on the React Native JS lib side. Result =&gt; better performance especially on launch time.

Turbo Modules

CodeGen — Suppose to make the JS side a Single Source Of Truth. Can let you create static types of the js so the native side (Fabric and Turbo Modules) will be aware to them and avoid validating the data each time =&gt; better performance and less place for mistakes when passing data.Lean Core — A change in React native repository structure. The purpose is to make the lib lighter and help the community resolve more pull requests faster than before. Facebook splits some of its parts to an external repo. It is already a process in progress that you can follow in their Github here.

CodeGen & Lean Core

We now go over the flow from the previous post and will show the differences. There isn’t a bridge anymore<ol><li>User clicks on the app icon</li><li>Fabric loads the native side (no native modules)</li><li>It tells the JS thread that it is ready and now the JS side loads all the main.bundle.js which contains all js and react logic + components</li><li>JS called through the ref native function (the one that was exposed as an object using the JSI API) to Fabric and the shadow node creates the tree as before</li><li>Yoga does the layout calculation converting from flexbox-based style to host layout</li><li>Fabric does its thing and shows the UI </li></ol>

The new flow

We discussed the current structure until now and it is time to talk about the stuff that was not the perfect choice, looking backward as React team leader on Facebook at this time mentioned in her…