public override void ViewDidAppear(bool animated)
{
base.ViewDidAppear(animated);
customizedTab = new CurvedBottomNavigationView();
element = Element as CurvedBottomTabbedPage;
customizedTab.Frame = this.TabBar.Frame;
customizedTab.Items = this.TabBar.Items;
customizedTab.SelectedItem = this.TabBar.SelectedItem;
customizedTab.TintColor = this.TabBar.TintColor;
customizedTab.UnselectedItemTintColor = this.TabBar.UnselectedItemTintColor;
customizedTab.BarBackgroundColor = this.TabBar.BarTintColor;
customizedTab.BackgroundColor = Xamarin.Forms.Color.Transparent.ToUIColor();
customizedTab.ItemSpacing = 4f;
customizedTab.ClipsToBounds = true;
this.TabBar.RemoveFromSuperview();
SetMenuItems();
// Creates a Button
var appButton = new UIButton(UIButtonType.Custom);
UIImage imageAppButtonButton = UIImage.FromBundle(element.FabIcon);
if (imageAppButtonButton != null)
{
appButton.SetImage(imageAppButtonButton, UIControlState.Normal);
}
// Sets width and height to the Button
appButton.Frame = new CGRect(0.0f, 0.0f, 48, 48);
//appButton.SetBackgroundImage(imageAppButtonButton, UIControlState.Normal);
appButton.BackgroundColor = UIColor.FromCGColor(element.FabBackgroundColor.ToCGColor());
CGPoint centers = TabBar.Center;
centers.Y = this.customizedTab.Frame.Y;
appButton.Center = centers;
var eventHandler = new EventHandler(ButtonClick);
appButton.AddTarget(eventHandler, events: UIControlEvent.TouchUpInside);
//Create shadow effect
appButton.Layer.ShadowColor = UIColor.Black.CGColor;
appButton.Layer.ShadowOffset = new CGSize(width: 0.0, height: 5.0);
appButton.Layer.ShadowOpacity = 0.5f;
appButton.Layer.ShadowRadius = 2.0f;
appButton.Layer.MasksToBounds = false;
appButton.Layer.CornerRadius = 24;
// Adds the Button to the view
View.Add(customizedTab);
View.AddSubview(appButton);
}
protected override void OnElementChanged(ElementChangedEventArgs <TabbedPage> e)
{
base.OnElementChanged(e);
try
{
element = Element as CurvedBottomTabbedPage;
var metrics = Resources.DisplayMetrics;
var width = metrics.WidthPixels;
var height = metrics.HeightPixels;
if (!(GetChildAt(0) is ViewGroup layout))
{
return;
}
if (!(layout.GetChildAt(1) is BottomNavigationView bottomNavigationView))
{
return;
}
bottomNavigationView.RemoveFromParent();
bottomNavigationView.RemoveAllViews();
bottomNavigationView.RemoveAllViewsInLayout();
var bottomView = LayoutInflater.From(Context).Inflate(Resource.Layout.BottomNavBar, null);
bottombar = bottomView.FindViewById <CurvedBottomNavigationView>(Resource.Id.bottom_nav_bar);
bottombar.RemoveFromParent();
actionbutton = bottomView.FindViewById <FloatingActionButton>(Resource.Id.fab);
actionbutton.RemoveFromParent();
SetTabItems();
SettingUpMenu();
OnChildrenCollectionChanged(null, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
SetFabProperties();
actionbutton.Click += Actionbutton_Click;
bottombar.LabelVisibilityMode = LabelVisibilityMode.LabelVisibilityLabeled;
layout.AddView(actionbutton);
layout.AddView(bottombar);
bottombar.SetZ(0);
UpdateBarBackgroundColor();
UpdateBarTextColor();
UpdateItemIconColor();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
public static void SetShiftMode(this CurvedBottomNavigationView bottomNavigationView, bool enableShiftMode, bool enableItemShiftMode)
{
try
{
var menuView = bottomNavigationView.GetChildAt(0) as BottomNavigationMenuView;
if (menuView == null)
{
System.Diagnostics.Debug.WriteLine("Unable to find BottomNavigationMenuView");
return;
}
var shiftMode = menuView.Class.GetDeclaredField("mShiftingMode");
shiftMode.Accessible = true;
shiftMode.SetBoolean(menuView, enableShiftMode);
shiftMode.Accessible = false;
shiftMode.Dispose();
for (int i = 0; i < menuView.ChildCount; i++)
{
var item = menuView.GetChildAt(i) as BottomNavigationItemView;
if (item == null)
{
continue;
}
item.SetShiftingMode(enableItemShiftMode);
item.SetChecked(item.ItemData.IsChecked);
}
menuView.UpdateMenuView();
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine($"Unable to set shift mode: {ex}");
}
}
public BottomNavTabPageRenderer()
{
customizedTab = new CurvedBottomNavigationView();
}
