> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/android/ui-customization.md). # UI Customization - [UI customization for Android viewer](https://docs.apryse.com/android/ui-customization/ui-customization.md): Discover how to create customizable UI with UI components. Learn about tool hierarchy, custom tools, quick menu, thumbnail slider, and more. Start building your custom views today! The Apryse Android - [UI components](https://docs.apryse.com/android/ui-customization/components-overview.md): Discover the Apryse Android SDK with a powerful document reader and PDF editor featuring Material Design UI components. Learn how to enhance your app's UI for interactive document viewing. The Apryse - [Customize the viewer's theme](https://docs.apryse.com/android/ui-customization/custom-theme-a.md): Customize the viewer's theme by overriding the PDFTronAppTheme xml style in your project. Learn how to style various elements like toolbar, bottom bar, and more for a personalized viewing experience. - [Tool class hierarchy](https://docs.apryse.com/android/ui-customization/tool-subclasses.md): Explore a variety of Tool classes for document viewer interaction, from AnnotEdit to RulerCreate. Enhance functionality and customize with these tools. The Apryse Android SDK streamlines secure docume - [Change & set default tool mode](https://docs.apryse.com/android/ui-customization/set-tool-to-toolmanager.md): Discover how to set up the ToolManager and change default tools with ToolManager.setTool(ToolManager.Tool) API. Optimize your workflow efficiently! The Apryse Android SDK streamlines secure document p - [Creating a custom PDF viewer tool in Android](https://docs.apryse.com/android/ui-customization/custom-tool.md): Learn how to create a custom rectangular cloudy annotation tool for PDFViewCtrl with this comprehensive guide. Find sample code and step-by-step instructions here! The Apryse Android SDK streamlines s - [Add a custom view to a PDF page in Android](https://docs.apryse.com/android/ui-customization/custom-relative-layout.md): Learn how to use CustomRelativeLayout in PDFViewCtrl for precise positioning and nesting of child views. Optimize your layout with CustomRelativeLayout attributes like posX, posY, and pageNum. Add cus - [Customize quick menu in Android](https://docs.apryse.com/android/ui-customization/quick-menu.md): Enhance user experience with QuickMenu, a convenient annotation popup menu for PDFViewCtrl. Learn how to customize, hide items, and disable the quick menu easily. Click to explore more! The Apryse And - [Customize quick menu in Android](https://docs.apryse.com/android/ui-customization/customize-quick-menu.md): Learn how to customize the quick menu in Android by overriding default menu resources or creating your own. Add, remove, and modify items programmatically for a personalized experience. Create your ow - [Customizing document viewer slider in Android](https://docs.apryse.com/android/ui-customization/document-slider-a.md): Enhance your layout with DocumentSlider - a RelativeLayout featuring an AppCompatSeekBar for page navigation and a PageIndicatorLayout. Learn how to set up and customize your document slider effortles - [Customizing thumbnail slider in Android](https://docs.apryse.com/android/ui-customization/thumbnail-slider-a.md): Learn how to set up and customize ThumbnailSlider in your Android app layout. Add a ThumbnailSlider element to your XML layout, attach a PDFViewCtrl, change buttons, and customize appearance. Optimize - [Display & customize list container in Android](https://docs.apryse.com/android/ui-customization/list-container.md): Discover how to use the list container in your Android app to showcase annotation, document outline, and user-defined bookmark tabs with BookmarksDialogFragment. Customize your display with ease! The - [UI customization code samples for Android](https://docs.apryse.com/android/ui-customization/samples.md): Discover the UI customization demo in the showcase sample app, highlighting features of the SDK. Explore various customization options for an enhanced user experience. The Apryse Android SDK streamlin - [APIs to customize UI in Android viewer](https://docs.apryse.com/android/ui-customization/apis.md): Discover utility classes for UI customization in this comprehensive guide. Learn about ToolManager and its methods for tool interaction. Optimize your UI with ease! 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