On CurrentPagechange Event of TabbedPage custom Font is not applied on title of each Child Page

Question

I am using TabbedPage and APi level is 34

initially I am loading three Tab on it and on CurrentPageChanged again displaying next three tabs.

As the solution provided on Question https://learn.microsoft.com/en-us/answers/questions/1867067/how-to-set-fontfamily-of-title-of-each-child-of-ne

its working fine for first load but second load of iteration its loosing fonts.

I have used Dispatcher.DispatchAsync and MainThread.BeginInvokeOnMainThread inside CurrentPageChanged as per my functional requirement.

will some one help on this scenario.

Answer 1

Hello,

Please overwrite the UpdateValue method and add the following code in the handler class:

public override void UpdateValue(string property)
  {
      base.UpdateValue(property); 
      var tabs = Microsoft.Maui.ApplicationModel.Platform.CurrentActivity?.FindViewById<FragmentContainerView>(Microsoft.Maui.Resource.Id
      .navigationlayout_toptabs); 
      var tabLayout = tabs?.GetChildAt(0); 
      if (tabLayout is TabLayout layout) {
          for (int i = 0; i < layout.TabCount; i++)
          {
              TabLayout.Tab? tab = layout.GetTabAt(i);
              TabLayout.TabView? view1 = tab?.View;
 
              for (int j = 0; j < (view1?.ChildCount ?? 0); j++)
              {
                  var child = view1?.GetChildAt(j);
 
                  if (child is TextView tv)
                  {
                      tv.Typeface = Microsoft.Maui.ApplicationModel.Platform.CurrentActivity.Resources.GetFont(Resource.Raw.alexbrushregular);
                  }
              }
          }
      }
  }

Best Regards,

Wenyan Zhang

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