> 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/xamarin/viewer/apis.md).

# APIs for PDF Viewer in Xamarin

Discover utility classes for document viewing in Xamarin.Android and Xamarin.iOS with PDFTron. Learn about DocumentActivity, PdfViewCtrlTabHostFragment, PdfViewCtrlTabFragment2, PTDocumentController,

The following are utility classes that can be used for document viewing.

**Xamarin.Android C#**

[pdftron.PDF.Controls.DocumentActivity](https://sdk.apryse.com/api/xamarinandroid/tools/api/pdftron.PDF.Controls.DocumentActivity.html) DocumentActivity is derived from androidx.appcompat.app.AppCompatActivity and is an all-in-one document reader and PDF editor.

[pdftron.PDF.ControlsPdfViewCtrlTabHostFragment](https://sdk.apryse.com/api/xamarinandroid/tools/api/pdftron.PDF.Controls.PdfViewCtrlTabHostFragment2.html) The PdfViewCtrlTabHostFragment2 shows multiple PdfViewCtrlTabFragment2 in tab layout.

[pdftron.PDF.Controls.PdfViewCtrlTabFragment2](https://sdk.apryse.com/api/xamarinandroid/tools/api/pdftron.PDF.Controls.PdfViewCtrlTabFragment2.html) The PdfViewCtrlTabFragment2 shows com.pdftron.pdf.PDFViewCtrl out of the box with controls such as AnnotationToolbarComponent, DocumentSlider, ThumbnailsViewFragment etc.

[pdftron.PDF.PDFViewCtrl](https://sdk.apryse.com/api/xamarinandroid/pdfnet/api/pdftron.PDF.PDFViewCtrl.html) PDFViewCtrl is derived from android.view\.ViewGroup and encapsulates a rich set of functionalities for interactive viewing of PDF documents.

**Xamarin.iOS C#**

[pdftron.PDF.Controls.PTDocumentController](https://sdk.apryse.com/api/xamarinios/tools/api/pdftron.PDF.Controls.PTDocumentController.html) PTDocumentController is part of the tools library and is an all-in-one document reader and PDF editor.

[pdftron.PDF.Controls.PTTabbedDocumentViewController](https://sdk.apryse.com/api/xamarinios/tools/api/pdftron.PDF.Controls.PTTabbedDocumentViewController.html) PTTabbedDocumentViewController hosts multiple PTDocumentControllers with a tabbed interface.

[pdftron.PDF.PDFViewCtrl](https://sdk.apryse.com/api/xamarinios/tools/api/pdftron.PDF.PDFViewCtrl.html) PTPDFViewCtrl is a UIView and encapsulates a rich set of functionalities for interactive viewing of PDF documents.


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