This repository was developed as a part of a medium post which you can find here if you want to run through it.

There are 3 examples of how to use this dynamic theming in your own projects! These are :

1. A side menu theme switcher (reengineered Ionic sidemenu)
2. A settings page with a list of colours
3. A modal that can be popped up allowing users to change the theme

Requirements to use this project: You need to have NodeJS and NPM installed

To install both of them on your system just launch this command:

$ sudo npm install cordova ionic -g

Once you clone this repository, run this command on your terminal to install all needed dependencies:

$ npm install

After installing the needed dependencies you are done, launch your app with a simple

$ ionic serve

This project accomplishes the dynamic theming by holding a number of SCSS files, 1 for each theme that will be used. Once these are imported during project setup, they can be referenced at run-time using their class names. A global AppState class holds the current theme that is being used. When a user selects a new theme, the state is updated with this desired theme.

This theme state is mapped to a <div> tag which encompasses the rest of the page and thus applies the theme. Given the global nature of AppState, if you change the theme in a page, any other pages which also use the AppState to get their styling will be updated too.

Here are some references which use the same concept to do a dark mode. Devdatic ionic3-components