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Xamarin / Android

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Documentation

PDFTron is now Apryse, learn more here.

Rotate pages (Android)

You can change the rotational alignment of pages with a graphical UI or programmatically.

API guide

API to programmatically rotate pages in Android

To rotate a page in a PDF document.

PDFDoc doc = new PDFDoc(filename);

// Rotate the first page 90 degrees clockwise.
Page page = doc.GetPage(1);
Page.Rotate originalRotation = page.GetRotation();
Page.Rotate rotation;
switch (originalRotation)
{
  case Page.Rotate.e_0:   rotation = Page.Rotate.e_90;  break;
  case Page.Rotate.e_90:  rotation = Page.Rotate.e_180; break;
  case Page.Rotate.e_180: rotation = Page.Rotate.e_270; break;
  case Page.Rotate.e_270: rotation = Page.Rotate.e_0;   break;
  default:                rotation = Page.Rotate.e_0;   break;
}
page.SetRotation(rotation);
About rotating pages
A page can be rotated clockwise, by 90 degrees, when displayed or printed. The Page.GetRotation() method returns the Page.Rotate enum specifying the current rotation. Similarly, Page.SetRotation() sets the current rotation.
Get the answers you need: Support