PdfActivity.
| PdfActivityConfiguration | Configuration for PDF display in a separate activity or PdfUiFragment. |
| PdfActivityConfiguration.Builder | Builder used to construct a PdfActivityConfiguration instance. |
| TabBarHidingMode | Mode controlling whether the tab bar should be shown or hidden depending on if there are loaded documents. |
| ThumbnailBarMode | Describes thumbnail bar mode. |
| UserInterfaceViewMode | Describes user interface and system bars mode. |