Android Toolbar

ToolbarAdded.cs

public override void OnViewAdded(Android.Views.View child)
{
            base.OnViewAdded(child);
            if (child.GetType() == typeof(Android.Support.V7.Widget.Toolbar))
            {
                var lastPage = Element?.Navigation?.NavigationStack?.Last();

                _toolbar = (Android.Support.V7.Widget.Toolbar)child;
                _originalToolbarBackground = _toolbar.Background;

                var originalContent = (Forms.Context as Activity)?.Window?.DecorView?.FindViewById<FrameLayout>(Window.IdAndroidContent);
                if (originalContent != null)
                {
                    _originalWindowContent =originalContent.Foreground;
                }

                _parentLayout = new Android.Widget.FrameLayout(_toolbar.Context)
                {
                    LayoutParameters = new Android.Widget.FrameLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent)
                };

                //Create custom title view layout
                _titleViewLayout = new Android.Widget.LinearLayout(_parentLayout.Context)
                {
                    Orientation = Android.Widget.Orientation.Vertical,
                    LayoutParameters = new Android.Widget.FrameLayout.LayoutParams(LayoutParams.WrapContent, LayoutParams.WrapContent)
                };
 
                //Create custom title text view
                _titleTextView = new TextView(_parentLayout.Context)
                {
                    LayoutParameters = new LinearLayout.LayoutParams(LayoutParams.WrapContent, LayoutParams.WrapContent)
                };
              
                //Create custom subtitle text view
                _subTitleTextView = new TextView(_parentLayout.Context)
                {
                    LayoutParameters = new LinearLayout.LayoutParams(LayoutParams.WrapContent, LayoutParams.WrapContent)    
                };

                //Add title/subtitle to title view layout
                _titleViewLayout.AddView(_titleTextView);
                _titleViewLayout.AddView(_subTitleTextView);

                //Add title view layout to main layout
                _parentLayout.AddView(_titleViewLayout);

                //Add main layout to toolbar
                _toolbar.AddView(_parentLayout);

                _toolbar.ChildViewAdded += OnToolbarChildViewAdded;

              
                

                lastPage.PropertyChanged += LastPage_PropertyChanged;


            }
}