How to embed a website into an Android App?

You would have to create a "wrapper" Android App. That is a native Android App with a Main Activity that contains a WebView with JavaScript enabled and some sort of navigation controls either on the mobile website or the native app (buttons or menu) but you could bump into problems such as:

• Users being stuck in a particular page with no way to navigating back or forward.
• Google is now more picky with the apps and they have policies to reject or ban apps that are only wrappers or point to external websites (kind of what Apple did for iOS)

Any case, you would have to create a mobile layout for your website or a make it responsive (special CSS and JS UI/UX that fits better on mobile devices).

Another alternative is to make your website compatible with PROGRESSIVE WEB APPS (https://developers.google.com/web/progressive-web-apps/) which is basically a Web app with some special elements that allow it to receive push notifications, put a shortcut or app icon on the device's home screen, etc.

Good luck! Hope this helped!

You can use android WebView. For more details you go through the link Android Webview