Analyzing lifecycle-aware components

In this section, we will analyze the lifecycles of activities and fragments and the potential issues that are caused when working with them. We will also observe how the introduction of ViewModel and LiveData solves these problems.

When the Android operating system and its development framework were released, activities were the most commonly used components when developing an application, as they represent the entry point of the interaction between an application and a user. As technology in displays and resolutions improved, apps could then present more information and controls that the user could interact with. For developers, this meant that the code required to manage the logic for a single activity increased, especially when dealing with different layouts for landscape and portrait. The introduction of fragments was meant to solve some of these problems. Responsibilities for handling the logic in different parts of the screen could now...