> 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/layers-ocgs.md). # Layers (OCGs) - [PDF Layers (OCGs) in Android](https://docs.apryse.com/android/layers-ocgs/layers.md): Learn how to show/hide, add, and extract PDF layers with these step-by-step instructions. Optimize your document management now! The Apryse Android SDK streamlines secure document processing and seaml - [Selectively browse PDF OCG layers in Android](https://docs.apryse.com/android/layers-ocgs/ocg-layer-browser-a.md): Discover how to use a PDF OCG dictionary to manage graphic objects with the PdfLayerDialogFragment. Learn how to control visibility and rendering of layers in your PDF documents. Explore the OCG layer - [Add a new PDF Layer in Android](https://docs.apryse.com/android/layers-ocgs/add-layer.md): Learn how to add PDF layers (OCG) to your documents with our comprehensive guide. Get full sample code for creating, extracting, and rendering PDF layers. The Apryse Android SDK streamlines secure doc - [Extract layers from PDF in Android](https://docs.apryse.com/android/layers-ocgs/extract-layer.md): Learn how to extract PDF layers or OCG (optional content group) from a document with this comprehensive guide. Get full sample code for creating, extracting, and rendering PDF layers. The Apryse Andro - [Code samples for working with PDF Layers in Android](https://docs.apryse.com/android/layers-ocgs/samples.md): Discover how to create PDF layers (OCG) with this Android showcase sample app. Explore the features of the SDK and view the layers demo under Advanced settings. The Apryse Android SDK streamlines secu - [APIs for PDF layers (OCGs) in Android](https://docs.apryse.com/android/layers-ocgs/apis.md): Discover utility classes for layers (OCGs) in PDF documents with Android (Java/Kotlin) com.pdftron.pdf.ocg.Group. Enhance your PDF functionalities now! The Apryse Android SDK streamlines secure docume --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.apryse.com/android/layers-ocgs.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.