Experiencing difficulty with implementing Stylesheet.create in a react native project

I am currently learning react native and facing some difficulties with styling the elements. I followed the tutorials that recommended using the StyleSheet.create() method to style my components, but I keep encountering an error.

The style prop requires a mapping from style properties to values, not just a string. For instance, use style={{marginRight: spacing + 'em'}} when working with JSX. Below is an example of my code:

MyComponent.js

import React from 'react';
import { Icon } from 'react-native-material-ui';
import { StyleSheet, Text, View } from 'react-native';
import {header} from '../assets/css/style.js'

export default class MyComponent extends React.Component {
    state = {

    }
    constructor(props) {
        super(props);
    }
    render() {
        return (
            <div style={ styles.headerStyle }>
              <h2 style={ styles.headerMargin }> Hello! </h2>
            </div>
   }
const styles = StyleSheet.create({
    headerStyle : header.headerStyle,
    headerMargin:header.headerMargin
});

style.js

export const header= {
    headerStyle: {
        backgroundColor: '#000',
        paddingTop: '20px',
        paddingBottom: '20px',
        color: '#fff'
    },
    headerCenter: {
        width: '100%',
        textAlign: 'center',
        display: 'block'
    },
    headerMargin: {
        margin: '0',
        padding: '0'
    }
}


Answer №1

When working with React Native, it's important to set dimensions using integer values since RN uses DP (Density Pixels) instead of regular pixels.

For example, to add a padding of 20dp, you would write paddingTop: 20 without specifying "px". It's not possible to set the value as just "0".

If you mistakenly set 0 as a string in your code (styles.js), it will result in an error being thrown.

To avoid this issue, here is the corrected version of the style.js code:

styles.js

export const header= {
    headerStyle: {
        backgroundColor: '#000',
        paddingTop: 20,
        paddingBottom: 20,
        color: '#fff'
    },
    headerCenter: {
        width: '100%',
        textAlign: 'center',
        display: 'block'
    },
    headerMargin: {
        margin: 0,
        padding: 0
    }
}

Answer №2

One other option is to run npm install in your terminal, such as vscode, prior to beginning your project. This can greatly simplify the styling process.

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