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Manage dark mode without installing any package in react native

React Native
September 4th, 2020 · 1 min read
Manage dark mode without installing any package in react native

Hello Friends,

welcome to Infinitbility!

Today we are going to discuss how to manage dark mode without installing any package in react native with example.

I read many articles about managing dark mode applications in react-native but no one can explain without package. then I write custom code for managing dark mode without any package and sharing with you.

Step 1: Create Global Veriable

Create Global Veriable for manage themeMode on src\App.js

1// App.js
3/* App theme mode */
4global.themeMode = 'light'; // light, dark

Step 2: Create a function

Create a function for get and set themeMode from Async Storage

1// functions.js
3// call when your app start
4async getThemeMode(){
5 let themeMode = await AsyncStorage.getItem("themeMode");
7 if(themeMode) {
8 global.themeMode = themeMode;
9 }else{
10 global.themeMode = 'light';
11 themeMode = 'light';
12 }
13 return themeMode;
16// call when user change theme mode
17async setThemeMode(mode){
18 let themeMode = await AsyncStorage.setItem("themeMode", mode);
19 global.themeMode = mode;
20 return mode;

Step 3: Manage Styles file

create seprate const for differant styles on dark mode and light mode.

1// Styles.js
3// diffrent styles for modes
4const ThemeStyle = {
5 light: {
6 background: {
7 backgroundColor: '#FFFFFF'
8 }
9 },
10 dark: {
11 background: {
12 backgroundColor: '#000000'
13 }
14 }
17// home screen styles
18const HomeScreenStyles = StyleSheet.create({
19 // background
20 content: {
21 flex: 1,
22 },

Step 4: Manage styles on HomeScreen

Here you understand using styles for both mode

1import React from 'react';
2import { View, Text } from 'react-native';
3import { HomeScreenStyles, ThemeStyle } from "../Styles";
6export default class HomeScreen extends React.Component {
7 constructor(props) {
8 super(props);
10 this.state = {
11 loader: false,
12 }
14 }
16 render() {
17 return (
18 <View style={[HomeScreenStyles.content, ThemeStyle[themeMode].background]}>
19 <Text>Here Your Content</Text>
20 </View>
21 );
22 }


whenever user change themeMode update your any state such as loader and etc.

Thanks for reading…

More From React Native Tutorial


1. Introduction To React Native

2. React Native Environment Setup using expo

3. React Native Environment Setup for windows

4. React Native Environment setup on Mac OS

5. React Native Environment setup on linux

6. React Native Project Structure

7. React Native State

8. React Native Props

9. React Native Styling

10. React Native Flexbox

11. React Native Text

12. React Native Textinput

13. React Native Commands

14. React Native ScrollView


1. React Native Dark Mode

2. React Native Fonts

3. React Native SQLite

4. React Native DatepickerAndroid

5. React native ScrollView scroll to position

6. How to align icon with text in react native

7. React Native Image

8. React Native Firebase Crashlytics

9. React Native Async Storage

10. React Native Share

Error & Issue Solution

1. Task :app:transformDexArchiveWithDexMergerForDebug FAILED In React Native

2. Expiring Daemon because JVM heap space is exhausted In React Native

3. Task :app:transformNativeLibsWithMergeJniLibsForDebug FAILED In React Native

4. Unable to determine the current character, it is not a string, number, array, or object in react native

5. App crashed immediately after install react native video or track player

6. how to delete SQLite database in android react native

7. React native material dropdown twice click issue

8. How to get the current route in react-navigation?

9. how to disable drawer on the drawer navigation screen?

10. Image not showing in ios 14 react native

11. React Native image picker launchimagelibrary on second time issue

12. how to open any link from react native render Html

13. Network request failed in react native fetch

14. React Native upload video example

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