How to implement internet check in android?

Question

Java

There are 2 activities:
1) Loading screen
2) Basic

Question:
How to implement internet check?
First, the loading screen is loaded, and then 2 options:
1) There is Internet on the device - The main activity opens
2) There is no Internet on the device - A modal window opens with the text that there is no Internet and a button to check the Internet

Answer 1

Make a request to a website. For example, ident.me shows your ip