An Android project typically involves three key files working together: a Java/Kotlin controller, an XML layout definition, and the app manifest. Understanding their roles forms the foundation of Activity development. Structuring the User Interface The XML layout file dictates the visual arrangement...
LinearLayout and RelativeLayout Android provides two primary layout managers for structuring user interfaces: LinearLayout and RelativeLayout. Their most common configuration attributes are listed below. LinearLayout LinearLayout aligns children in a single direction—vertical or horizontal—using the...
Element Syntax and Hierarchy Declare Activity subclasses within the <application> parent element using the following structure: <activity android:name=".MainActivity" android:exported="true" android:theme="@style/CustomTheme" android:screenOrientation="por...
Task Management and Navigation Stacks When users interact with an application, they engage with a sequence of screens represented by Activity instances. The system organizes these instances into a task—a cohesive unit that arranges activities in a last-in-first-out (LIFO) structure known as the back...