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PDFTron is now Apryse, learn more here.

Xamarin / Guides



PDFTron is now Apryse, learn more here.

Setting up realtime document collaboration in Xamarin

This tutorial only applies to Xamarin.Android.


  • Minimum API: 21
  • Java 8

To compile for Java 8, add the following to your application's .csproj file:

Visual Studio 2019 is required


Step 1: Integration

  1. Integrate Apryse core and the tools library as described here .
  2. Open the NuGet package manager by right click on your project, and click Manage NuGet Packages.... Then in Browse tab, search for Apryse.


NuGet for Collab

Step 2: Add the viewer

  1. Update your AndroidManifest.xml as described in Step 1 of this guide .

  2. Create the CollabViewerTabHostFragment2, and start it like any other Android Fragment.

    private void addViewerFragment(AppCompatActivity activity, Android.Net.Uri fileUri)
        // Create a custom ViewerConfig used to initialize the viewer fragment
        var viewerConfig = new ViewerConfig.Builder()
        // Create the Fragment using CollabViewerBuilder2
        var tabHostFragment = (CollabViewerTabHostFragment2)CollabViewerBuilder2
        // Add the Fragment to your activity
        var ft = activity.SupportFragmentManager.BeginTransaction();
        ft.Replace(Resource.Id.fragment_container, tabHostFragment, null);

where is the resource id of a layout in your activity that will contain your fragment:

For example:

<?xml version="1.0" encoding="utf-8"?>
<!-- This FrameLayout will contain our viewer fragment -->
<FrameLayout xmlns:android=""

Next steps

Get the answers you need: Support