How to change text color of title on page loaded from "More..." tab

Question

After clicking the "More..." item in the tab bar it then shows a list of pages to choose to navigate to. After selecting one of these pages, it then has the page title at the top along with a back More button to return to the previous list as shown in the screen shot. How could I change the text color of this page title (i.e. the "Inspections" in above screenshot)? That page title is auto-generated and I'm wondering if there's a way to either change its text color or remove it....

Answer 1

I've figured out how to do it and here is how

using UIKit;
using Xamarin.Forms;
using Xamarin.Forms.Platform.iOS;

[assembly: Xamarin.Forms.ExportRenderer(typeof(BottomNavigationTabbedPage), typeof(ExtendedTabbedPageRenderer))]
public class ExtendedTabbedPageRenderer : TabbedRenderer
{
    string darkBackgroundColor = "#303030"; //This is DarkPageBackgroundColor from the Application Resources page

    protected override void OnElementChanged(VisualElementChangedEventArgs e)
    {
        base.OnElementChanged(e);

        if (e.OldElement == null)
            MoreNavigationController.Delegate = new CustomMoreNavigationControllerDelegate();
    }
}

internal class CustomMoreNavigationControllerDelegate : UINavigationControllerDelegate
{
    public override void WillShowViewController(UINavigationController navigationController, UIViewController viewController, bool animated)
    {
        if (Application.Current.UserAppTheme == OSAppTheme.Dark)
        {
            viewController.NavigationController.NavigationBarHidden = false;

            if (viewController.NavigationItem.Title == "Inspections")
            {
                UILabel titleLabel = new UILabel();
                titleLabel.Text = "Inspections";
                titleLabel.TextColor = UIColor.White;

                viewController.NavigationItem.TitleView = titleLabel;
            }
            else
            {
                UILabel titleLabel = new UILabel();
                titleLabel.Text = "More";
                titleLabel.TextColor = UIColor.White;

                viewController.NavigationItem.TitleView = titleLabel;
            }

            viewController.View.BackgroundColor = UIColor.FromRGB(48, 48, 48);
            viewController.View.TintColor = UIColor.White;

            if (viewController.View is UITableView tableView)
            {
                tableView.SeparatorColor = UIColor.White;
                foreach (var cell in tableView.VisibleCells)
                {
                    cell.BackgroundColor = UIColor.FromRGB(48, 48, 48);
                    cell.TextLabel.TextColor = cell.TintColor = UIColor.White;
                }
            }
        }
        else
        {
            viewController.NavigationController.NavigationBarHidden = false;

            if (viewController.NavigationItem.Title == "Inspections")
            {
                UILabel titleLabel = new UILabel();
                titleLabel.Text = "Inspections";
                titleLabel.TextColor = UIColor.Black;

                viewController.NavigationItem.TitleView = titleLabel;
            }
            else
            {
                UILabel titleLabel = new UILabel();
                titleLabel.Text = "More";
                titleLabel.TextColor = UIColor.Black;

                viewController.NavigationItem.TitleView = titleLabel;
            }

            viewController.View.BackgroundColor = UIColor.White;
            viewController.View.TintColor = UIColor.Black;

            if (viewController.View is UITableView tableView)
            {
                tableView.SeparatorColor = UIColor.White;
                foreach (var cell in tableView.VisibleCells)
                {
                    cell.BackgroundColor = UIColor.White;
                    cell.TextLabel.TextColor = cell.TintColor = UIColor.Black;
                }
            }
        }
    }
}