XML Layouts
XML Layouts are a declarative approach in Android development for designing user interfaces (UIs) using XML (eXtensible Markup Language) files. They define the structure, appearance, and behavior of UI components such as buttons, text views, and layouts in a hierarchical, readable format, separate from the application logic. This separation allows for easier maintenance, localization, and adaptation to different screen sizes and orientations.
Developers should learn XML Layouts when building Android applications, as they are the standard and recommended way to create UIs in Android Studio, enabling efficient design and previewing without running the app. They are essential for implementing responsive designs that adapt to various devices, and they integrate seamlessly with Android's resource system for supporting multiple languages and configurations. Use cases include defining activity screens, fragments, and custom views in mobile apps.