Retrofit android restful https

Retrofit Android example | Web services using Retrofit
http://www.androidwarriors.com/2015/08/retrofit-android-example-web-services.html

Retrofit Android Tutorial to Get JSON from Server

https://www.simplifiedcoding.net/retrofit-android-tutorial-to-get-json-from-server/

Android Studio Parsing Json Using Retrofit

http://instinctcoder.com/android-studio-parsing-json-using-retrofit/

Retrofit — Basic Authentication on Android
https://futurestud.io/blog/android-basic-authentication-with-retrofit

Make Your First Android App: Part 3/3
https://www.raywenderlich.com/56111/make-first-android-app-part-3