android postgres教程,java - Android & my PostgreSQL database advice - Stack Overflow

I apologise for the very general question but I'm looking for some advice. I have two products that I have created for a project. An android app and a website service. I want the android app to be able to connect to a PostgreSQL database in order to authenticate user login and submit a small amount of data.

The data on the PostgreSQL database will then be produced on the website. Simples!

I'm wondering if there are some tutorials or discussions that provide a simple solution to this. I've looked at loads of forums which mention using a lot of complicated protocols, frameworks, etc.

I'm just looking for some nice efficient android examples on how to achieve this.

Any advice would be appreciated.