How to create a mobile application if you already have a website (with the possibility of authorization)?

Question

Android

The university has a private office where students and teachers sit. I want to create a mobile application for this office. I've looked all over the internet and still can't figure out what exactly to read. I found some lessons 300-400 pages long, but there the creation is just an application, and I need it with the entrance to my personal account. Something like synchronization (login with login and password), I’m probably in this business 0.
There is time, there is a desire, the only thing I don’t understand is what exactly should I read?

Answer 1

An Android Mobile Application Development Tutorial.

Answer 2

Using xamarin as an example, but in general it will work with any framework.
https://docs.microsoft.com/en-us/xamarin/android/g...
1. create 2 login windows and an application window
2. add permission to access the Internet
3. display the login screen at startup
4. read the name -password and make a request to your server.
5. The server generates a cookie, jwt token something else, you save this token in memory
6. change the page to the main one
7. Request data via api, add the token received in paragraphs to the header. 5
8. Don't forget to cache data when requesting data in
PS data adapters, it's better to use something like Phonegap https://phonegap.com/blog/2015/11/30/framework7/

Answer 3

You need to find a programmer