This file serves as the primary layout resource within an Android application developed using Android Studio. It defines the user interface of the application’s main screen or activity through an XML structure. For instance, it specifies the arrangement of buttons, text fields, and other UI elements that users interact with.
Its importance lies in providing the visual structure for the application’s interface. This file allows developers to design and modify the layout separately from the application’s logic (Java or Kotlin code). Historically, this separation has streamlined the development process, enabling UI changes without recompiling the entire application. It also facilitates the creation of responsive layouts that adapt to different screen sizes and resolutions.
