Introduction
React Native is used in the building of hybrid mobile apps. The React Native is a user interface (UI) design tool by Facebook. It is compatible with both IOS (iPhone Operating System) and Android OS platforms. React Native enables developers to create apps in the same way JavaScript does but at a considerably faster pace. React Native combines the most significant aspects of native programming with React, a world-class JavaScript toolkit for creating user interfaces.
This article will introduce you to the State, a key concept in React. A component's data is stored in React State. In turn, the component sends the data contained in the State to the output.
Recommended Topic, React Native Paper, React devtools
React Native State
State is a primary attribute of React Native, which is mutable in nature. This signifies that its values are changeable within the component. It provides a sophisticated framework for managing the data available inside any component from the beginning to the end of the component's life cycle. A state is an object with all the required data to create a component paired with HTML. When the state changes, the render function is called. If the State of a textbox changes, the render function is invoked to display the necessary adjustments. In general, all states are initialized within the constructor function.
Uses
We can see the uses of React Native State below.
- We can use React Native Status to track the State of a function component.
- React Native State can hold data or information about the component. The Data can be modified during the component's lifespan.
- It can be used to alter the appearance of an application. React Native State can be used to re-render the component and any of its descendant components.
- React Native State can be used to represent information about the current state of the component.
Advantages
The Advantages of React Native State can be seen below.
- States are similar to global variables for any component. As a result, they are available anywhere within the specified components and can be used for various reasons.
- Because React Native manages the State, they handle memory management very well in many practical scenarios.
- With the aid of React Native State, it is simple to manage changes and different states of apps.
- React Native State is also private to its component and might be changed within it. States are secure within any component because they are private within it.
- Variables within the React Native States are simple to manipulate. There is no issue if multiple components have the same variable name.
Also see, React Native Reanimated
Example
We will look into an example of 'React Native State'.
import React,{useState} from 'react';
import {Button, StyleSheet,Text,View} from 'react-native';
export default function App(){
const [name,setName] = useState("Programming")
const [tutor,setTutor] = useState({name: "Unknown",year: "Unknown"})
const clickMe = () =>{
setName("Platform")
setTutor({name: "Coding Ninjas", year: 2016})
}
return (
<View style={styles.container}>
<Text>{name}</Text>
<Text>My name is {tutor.name} and created in {tutor.year}</Text>
<View style={styles.button}>
<Button title="change" color="Black" onPress={clickMe}/>
</View>
</View>
);
}
const styles = StyleSheet.create({
container: {
flex:1,
backgroundColor: 'white',
alignItems: 'center',
justifyContent: 'center',
},
button:{
backgroundColor: "red",
padding: 10,
margin: 20
}
});
Output
We will be getting an output displaying the module screen. It makes us sure that the interface is ready. Here the "CHANGE" button acts as a trigger. This trigger changes the State and re-renders it to the updated State.

The first State shows the message "My name is Unknown and created in Unknown".

We can see that, on clicking the change button in the module, the state changes and the new message is displayed, which says, "My name is Coding Ninjas and created in 2016".
Check out Advantages of React JS here.