Launcher3 Here

It manages the home screen layout (desktop) and the vertical or horizontal list of apps (drawer).

Became the default starting with Android 7.0 (Nougat). Architectural Components launcher3

The launcher has evolved alongside Android's major releases: Used in Android 1.6 to 2.1. It manages the home screen layout (desktop) and

A fundamental view that handles the dragging and dropping of icons and widgets. launcher3

Uses a ContentProvider to store and retrieve the arrangement of icons, folders, and widgets.