Setting up realtime document collaboration in Xamarin

• Minimum API: 21
• Java 8

<PropertyGroup>
  <AndroidEnableDesugar>true</AndroidEnableDesugar>
  <AndroidDexTool>d8</AndroidDexTool>
</PropertyGroup>

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()
           .MultiTabEnabled(false)
           .OpenUrlCachePath(this.CacheDir.AbsolutePath)
           .Build();
       // Create the Fragment using CollabViewerBuilder2
       var tabHostFragment = (CollabViewerTabHostFragment2)CollabViewerBuilder2
           .WithUri(fileUri)
           .UsingConfig(viewerConfig)
           .Build(this);
       // Add the Fragment to your activity
       var ft = activity.SupportFragmentManager.BeginTransaction();
       ft.Replace(Resource.Id.fragment_container, tabHostFragment, null);
       ft.Commit();
   }

where R.id.fragment_container 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="http://schemas.android.com/apk/res/android"
    android:id="@+id/fragment_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

• Connect with annotation database
• Customize collaboration UI