How to easily set up Material UI theme toggle in React

Scaffold React Application#

A new react app is easily scaffolded using

$ npx create-react-app my-app

Install dependencies#

I need to install material ui core package.

// with npm
$ npm install @material-ui/core

// with yarn
$ yarn add @material-ui/core

Wrap application in Theme Provider#

For the purpose of this demo, I will use App.js to set up everything.

Add Light and Dark themes

export const light = {
palette: {
type: 'light',
},
}
export const dark = {
palette: {
type: 'dark',
},
}

Import ThemeProvider and createMuiTheme

import { ThemeProvider } from '@material-ui/core'
import { createMuiTheme } from '@material-ui/core/styles'

Set up the toggle logic

const [theme, setTheme] = useState(true)
const icon = !theme ? <Brightness7Icon /> : <Brightness3Icon /> // Icons imported from `@material-ui/icons`
const appliedTheme = createMuiTheme(theme ? light : dark)

Wrap the render inside ThemeProvider and pass the appliedTheme

return <ThemeProvider theme={appliedTheme}>//rest of the code</ThemeProvider>

Trigger toggle using onClick
```
onClick={() => setTheme(!theme)}
```

Now our theme toggle logic is in place.

Add rest of the material ui components and see the toggle in action!

You can see a working example here, along with the code.