Iconize and NavigationPageRenderer doesn't seem to work

[pcdus]

I meet a small problem with Iconize: before using it in my project, I used a custom renderer on Android to display or hide an TitleIcon in the NavigationBar.

This worked well by:

• adding an ImageView with an id on the Toolbar:

  <?xml version="1.0" encoding="utf-8"?>
  <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:id="@+id/toolbar"
  android:layout_width="match_parent"
  android:layout_height="?attr/actionBarSize"
  android:minHeight="?attr/actionBarSize"
  android:background="?attr/colorPrimary"
  android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
  android:elevation="4dp">
  <ImageView
      android:src="@drawable/navbar_adp_logo"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="center"
      android:id="@+id/toolbar_icon"
  />
  </android.support.v7.widget.Toolbar>

• using a NavigationPageRenderer:

  [assembly: ExportRenderer(typeof(NavigationPage), typeof(CustomNavigationPageRenderer))]
  namespace MyProject.Droid.Renderers
  {
  public class CustomNavigationPageRenderer : NavigationPageRenderer
  {
  
      protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
      {
          base.OnElementPropertyChanged(sender, e);
  
          if (e.PropertyName.Equals("CurrentPage"))
              ChangeToolbarIconVisibility(Element.CurrentPage is MyHomePage);
      }
  
      private void ChangeToolbarIconVisibility(bool visible)
      {
          var toolbarIcon = FindViewById<ImageView>(Resource.Id.toolbar_icon);
          toolbarIcon.Visibility = visible ? Android.Views.ViewStates.Visible : Android.Views.ViewStates.Gone;
      }

But since I've added Iconize this doesn't longer work:

• the TitleIcon stays visible in all the pages
• the renderer doesn't seem to work now

I've tried to replacing: [assembly: ExportRenderer(typeof(NavigationPage), typeof(CustomNavigationPageRenderer))] by [assembly: ExportRenderer(typeof(IconNavigationPage), typeof(CustomNavigationPageRenderer))] but in this case, I don't "go" into the renderer, where I put breakpoints...

Is this normal? Is there a way to fix this?

[pcdus]

I've done a new test with:

[assembly: ExportRenderer(typeof(IconNavigationPage), typeof(CustomNavigationPageRenderer))]
public class CustomNavigationPageRenderer : IconNavigationRenderer
{
}

But it's always the same thing: I don't "go" into the renderer, it's like if it wasn't recognized...

[jthun]

Same problem here. I also tried extending NavigationPageRenderer and IconNavigationRenderer, but with no success.