public static void UpdateBarTextColor(this AToolbar nativeToolbar, Toolbar toolbar)
{
var textColor = toolbar.BarTextColor;
// Because we use the same toolbar across multiple navigation pages (think tabbed page with nested NavigationPage)
// We need to reset the toolbar text color to the default color when it's unset
if (_defaultTitleTextColor == null)
{
var a = TintTypedArray.ObtainStyledAttributes(nativeToolbar.Context?.GetThemedContext(), null, Resource.Styleable.Toolbar, Resource.Attribute.toolbarStyle, 0);
_defaultTitleTextColor = a.GetColorStateList(Resource.Styleable.Toolbar_titleTextColor);
a.Recycle();
}
if (textColor != null)
{
nativeToolbar.SetTitleTextColor(textColor.ToPlatform().ToArgb());
}
else
{
nativeToolbar.SetTitleTextColor(_defaultTitleTextColor);
}
if (nativeToolbar.NavigationIcon is DrawerArrowDrawable icon)
{
if (textColor != null)
{
_defaultNavigationIconColor = icon.Color;
icon.Color = textColor.ToPlatform().ToArgb();
}
else if (_defaultNavigationIconColor != null)
{
icon.Color = _defaultNavigationIconColor.Value;
}
}
}
protected virtual void SetColors(AToolbar toolbar, IShellToolbarTracker toolbarTracker, Color foreground, Color background, Color title)
{
var titleArgb = title.ToAndroid(ShellRenderer.DefaultTitleColor).ToArgb();
if (_titleTextColor != titleArgb)
{
toolbar.SetTitleTextColor(titleArgb);
_titleTextColor = titleArgb;
}
var newColor = background.ToAndroid(ShellRenderer.DefaultBackgroundColor);
if (!(toolbar.Background is ColorDrawable cd) || cd.Color != newColor)
{
using (var colorDrawable = new ColorDrawable(background.ToAndroid(ShellRenderer.DefaultBackgroundColor)))
toolbar.SetBackground(colorDrawable);
}
var newTintColor = foreground ?? ShellRenderer.DefaultForegroundColor;
if (toolbarTracker.TintColor != newTintColor)
{
toolbarTracker.TintColor = newTintColor;
}
}