protected virtual void OnTabbedPagePropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
var element = sender as Element;
if (element == null)
{
return;
}
BadgeView badgeView;
if (!BadgeViews.TryGetValue(element, out badgeView))
{
return;
}
if (e.PropertyName == CustomTabbedPage.BadgeTextProperty.PropertyName)
{
badgeView.Text = CustomTabbedPage.GetBadgeText(element);
return;
}
if (e.PropertyName == CustomTabbedPage.BadgeColorProperty.PropertyName)
{
badgeView.BadgeColor = CustomTabbedPage.GetBadgeColor(element).ToAndroid();
}
}
protected virtual void OnTabbedPagePropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
var element = sender as Element;
if (element == null)
{
return;
}
var tabItems = Control.GetDescendantsOfType <TabItem>();
var tabItem = tabItems.FirstOrDefault(t => t.Label == ((Page)element).Title);
if (tabItem == null)
{
return;
}
if (e.PropertyName == CustomTabbedPage.BadgeTextProperty.PropertyName)
{
tabItem.BadgeText = CustomTabbedPage.GetBadgeText(element);
return;
}
if (e.PropertyName == CustomTabbedPage.BadgeColorProperty.PropertyName)
{
tabItem.BadgeColor = new Xaml.Media.SolidColorBrush(
ColorHelper.XamarinFormColorToWindowsColor(
CustomTabbedPage.GetBadgeColor(element)));
}
SetSelectedTab(Control);
}
private void OnTabbedPagePropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
var page = sender as Page;
if (page == null)
{
return;
}
if (e.PropertyName == CustomTabbedPage.BadgeTextProperty.PropertyName)
{
var tabIndex = Tabbed.Children.IndexOf(page);
if (tabIndex < TabBar.Items.Length)
{
UpdateTabBadgeText(TabBar.Items[tabIndex], page);
}
return;
}
if (e.PropertyName == CustomTabbedPage.BadgeColorProperty.PropertyName)
{
var tabIndex = Tabbed.Children.IndexOf(page);
if (tabIndex < TabBar.Items.Length)
{
TabBar.Items[tabIndex].BadgeColor = CustomTabbedPage.GetBadgeColor(page).ToUIColor();
}
}
}
public object Convert(object value, Type targetType, object parameter, string language)
{
if (value is Page)
{
var badgeColor = CustomTabbedPage.GetBadgeColor((Page)value);
var color = ColorHelper.XamarinFormColorToWindowsColor(badgeColor);
return(new SolidColorBrush(color));
}
return(null);
}
private void AddTabBadge(int tabIndex)
{
var element = Tabbed.Children[tabIndex];
element.PropertyChanged += OnTabbedPagePropertyChanged;
if (TabBar.Items.Length > tabIndex)
{
var tabBarItem = TabBar.Items[tabIndex];
UpdateTabBadgeText(tabBarItem, element);
var tabColor = CustomTabbedPage.GetBadgeColor(element);
if (tabColor != Color.Default)
{
tabBarItem.BadgeColor = tabColor.ToUIColor();
}
}
}
private void AddTabBadge(int tabIndex)
{
var element = Element.Children[tabIndex];
var view = _tabLayout?.GetTabAt(tabIndex).CustomView ?? _tabStrip?.GetChildAt(tabIndex);
var badgeView = (view as ViewGroup)?.FindChildOfType <BadgeView>();
if (badgeView == null)
{
var imageView = (view as ViewGroup)?.FindChildOfType <ImageView>();
var badgeTarget = imageView?.Drawable != null
? (Android.Views.View)imageView
: (view as ViewGroup)?.FindChildOfType <TextView>();
// Create badge for tab
badgeView = new BadgeView(Context, badgeTarget);
}
BadgeViews[element] = badgeView;
// Get text
var badgeText = CustomTabbedPage.GetBadgeText(element);
badgeView.Text = badgeText;
// Set color if not default
var tabColor = CustomTabbedPage.GetBadgeColor(element);
if (tabColor != Xamarin.Forms.Color.Default)
{
badgeView.BadgeColor = tabColor.ToAndroid();
}
element.PropertyChanged += OnTabbedPagePropertyChanged;
}