Where are the layout files? Why doesn’t Flutter have layout files?

Flutter does not have separate layout files like some other frameworks. In Flutter, layouts are defined directly in the code using widgets. The reason for this is that Flutter's core philosophy is that everything is a widget, including layouts[1][2].

Layouts in Flutter are built by composing multiple widgets together to create the desired UI structure. Each widget is an immutable description of part of the user interface[4]. Widgets can be nested inside other widgets to create complex layouts.

Some of the most commonly used layout widgets in Flutter include[2]:

• Container: Adds padding, margins, borders, background color, or other decorations to a widget
• GridView: Lays widgets out as a scrollable grid
• ListView: Lays widgets out as a scrollable list
• Row: Arranges widgets horizontally
• Column: Arranges widgets vertically
• Stack: Overlaps a widget on top of another

By defining layouts directly in the code using widgets, Flutter achieves a...