Can I make dynamic styles in React Native?

React Native is a popular framework for building mobile applications using JavaScript. One common requirement in mobile app development is the ability to create dynamic styles, where the styles of a component can change based on certain conditions or user interactions. In this article, we will explore different approaches to achieve dynamic styles in React Native.

1. Using Inline Styles

React Native allows you to define styles using JavaScript objects, similar to inline styles in web development. This approach is useful when you need to dynamically change a few properties of a component’s style.

Here’s an example:


import React, { useState } from 'react';
import { View, Text, StyleSheet } from 'react-native';

const App = () => {
  const [isHighlighted, setIsHighlighted] = useState(false);

  const containerStyle = {
    backgroundColor: isHighlighted ? 'yellow' : 'white',
    padding: 10,
    borderRadius: 5,
  };

  return (
    
      Hello, World!
    
  );
};

const styles = StyleSheet.create({
  text: {
    fontSize: 20,
    color: 'black',
  },
});

export default App;

In this example, the background color of the container view changes dynamically based on the value of the isHighlighted state variable. When isHighlighted is true, the background color is set to yellow; otherwise, it is set to white.

2. Using StyleSheet.create

React Native provides the StyleSheet.create method to define styles in a more structured way. This approach is useful when you have multiple styles that need to be dynamically changed.

Here’s an example:


import React, { useState } from 'react';
import { View, Text, StyleSheet } from 'react-native';

const App = () => {
  const [isHighlighted, setIsHighlighted] = useState(false);

  const containerStyle = StyleSheet.create({
    container: {
      backgroundColor: isHighlighted ? 'yellow' : 'white',
      padding: 10,
      borderRadius: 5,
    },
  });

  return (
    
      Hello, World!
    
  );
};

const styles = StyleSheet.create({
  text: {
    fontSize: 20,
    color: 'black',
  },
});

export default App;

In this example, the container style is defined using the StyleSheet.create method. The background color of the container view changes dynamically based on the value of the isHighlighted state variable.

3. Using CSS-in-JS Libraries

If you prefer a more powerful and flexible solution for dynamic styles in React Native, you can use CSS-in-JS libraries like Styled Components or Glamorous Native. These libraries allow you to write styles using JavaScript or a CSS-like syntax and provide advanced features like theme support and dynamic style composition.

Here’s an example using Styled Components:


import React, { useState } from 'react';
import { View, Text } from 'react-native';
import styled from 'styled-components/native';

const Container = styled.View`
  background-color: ${({ isHighlighted }) => (isHighlighted ? 'yellow' : 'white')};
  padding: 10px;
  border-radius: 5px;
`;

const TextStyled = styled.Text`
  font-size: 20px;
  color: black;
`;

const App = () => {
  const [isHighlighted, setIsHighlighted] = useState(false);

  return (
    
      Hello, World!
    
  );
};

export default App;

In this example, the styles are defined using the styled function from Styled Components. The background color of the container view changes dynamically based on the value of the isHighlighted state variable.

These are some of the approaches you can use to achieve dynamic styles in React Native. Choose the one that best fits your project requirements and coding style.

Happy coding!

Can I make dynamic styles in React Native?