How can you structure styles and design components in an application to ensure maintainability and scalability?

For ease of maintenance and scalability in Android applications, styles and design components are recommended to be structured as follows:

• Use themes and styles in resources (res/values/styles.xml) to centrally define colors, sizes, fonts, and other attributes.
• Create reusable components (e.g., custom Views or Compose components) to avoid code duplication.
• Separate styles by categories: basic (colors, typography), components (buttons, input fields), screens.
• Use Material Design and its theming system, which simplifies support and ensures consistency.
• Apply ConstraintLayout and other modern layouts for flexible UI design.

Example of defining a button style:

<style name="PrimaryButton" parent="Widget.MaterialComponents.Button">
    <item name="backgroundTint">@color/colorPrimary</item>
    <item name="cornerRadius">8dp</item>
    <item name="android:textColor">@android:color/white</item>
</style>

This approach allows for quick changes to the app's appearance without affecting the logic.