React native navigation useTheme()

Question

I'm trying to access useTheme() directly from the styles But so far my solution doesn't seem to work. I'm not getting in error back. Is there a way to do what I'm trying to do?

 import { StyleSheet } from "react-native";

    import { useTheme } from '@react-navigation/native'
    
    export default function () {
            const { colors } = useTheme();
            const styles = GlobalStyles({ colors: colors })
            return styles
        }
        
        const GlobalStyles = (props) => StyleSheet.create({
        
            container: {
                flex: 1,
                backgroundColor: props.colors.backgroundColor,
        
            },
        })

Accessing style in component

 import React from "react";
import GlobalStyles from "../globalStyles.js"
    
    class Inventory extends React.Component {
    
    render() {
    
            return (
                <View style={globalStyles.container}>
            )
    
     }

Heriot

Answer 1

You have a couple of issues: you can only use a hook within a hook or a function component. So you could convert your global stylesheet into a hook:

import { StyleSheet } from "react-native";
import { useTheme } from '@react-navigation/native'
    
const getGlobalStyles = (props) => StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: props.colors.backgroundColor,
  },
});

function useGlobalStyles() {
  const { colors } = useTheme();

  // We only want to recompute the stylesheet on changes in color.
  const styles = React.useMemo(() => getGlobalStyles({ colors }), [colors]);

  return styles;
}

export default useGlobalStyles;

Then you can use the hook by converting your Inventory class component into a function component and using the new useGlobalStyles hook.

import React from "react";
import useGlobalStyles from "../globalStyles.js"
    
const Inventory = () => {
  const globalStyles = useGlobalStyles();

  return (
    <View style={globalStyles.container}>
  )
}

Paleo

Thank you very much! – Heriot