Flexibly use actionbar and viewpager in Android to switch pages

This article describes how Android uses actionbar and viewpager to switch pages, which are shared for your reference. The details are as follows: the screenshot of operation effect is as follows:

The project layout is as follows:

The specific codes are as follows:

Mainactivity.java code

Below are four fragments

activity_ main.xml

Below are the layout files of the four fragments

The other three are the same, but the file name and contents have changed.

I hope this article will help you learn Android Software Programming.