public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
var view = base.OnCreateView(inflater, container, savedInstanceState);
_bottomNavigationView = view.FindViewById <BottomNavigationViewEx>(Resource.Id.bottom_navigation_view);
_bottomNavigationView?.SetOnNavigationItemSelectedListener(this);
_bottomNavigationView?.SetOnNavigationItemReselectedListener(this);
_bottomNavigationView?.Menu?.FindItem(Resource.Id.i_unchecked)?.SetChecked(true);
var uncheckedItem = _bottomNavigationView?.FindViewById(Resource.Id.i_unchecked);
if (uncheckedItem != null)
{
uncheckedItem.Visibility = ViewStates.Gone;
}
_bottomNavigationView?.EnableShiftingMode(false);
var bindingSet = this.CreateBindingSet <BottomNavigationView, BottomNavigationViewModel>();
bindingSet.Bind(this).For(h => h.CheckedItem).To(vm => vm.CheckedItem);
bindingSet.Apply();
if (savedInstanceState == null)
{
}
return(view);
}
public static BottomNavigationViewEx SetupBottomBar(this ExtendedTabbedPageRenderer renderer,
global::Android.Widget.RelativeLayout rootLayout, BottomNavigationViewEx bottomNav, int barId)
{
if (bottomNav != null)
{
rootLayout.RemoveView(bottomNav);
bottomNav.SetOnNavigationItemSelectedListener(null);
}
var barParams = new global::Android.Widget.RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.MatchParent,
ExtendedTabbedPageRenderer.BottomBarHeight.HasValue ?
(int)rootLayout.Context.ToPixels(ExtendedTabbedPageRenderer.BottomBarHeight.Value) :
ViewGroup.LayoutParams.WrapContent);
barParams.AddRule(LayoutRules.AlignParentBottom);
bottomNav = new BottomNavigationViewEx(rootLayout.Context)
{
LayoutParameters = barParams,
Id = barId
};
if (ExtendedTabbedPageRenderer.BackgroundColor.HasValue)
{
bottomNav.SetBackgroundColor(ExtendedTabbedPageRenderer.BackgroundColor.Value);
}
bottomNav.SetOnNavigationItemSelectedListener(renderer);
rootLayout.AddView(bottomNav, 1, barParams);
return(bottomNav);
}
protected override void Dispose(bool disposing)
{
if (disposing && !_disposed)
{
_disposed = true;
RemoveAllViews();
foreach (Page pageToRemove in Element.Children)
{
IVisualElementRenderer pageRenderer = Platform.GetRenderer(pageToRemove);
if (pageRenderer != null)
{
pageRenderer.ViewGroup.RemoveFromParent();
pageRenderer.Dispose();
}
}
if (_bottomBar != null)
{
_bottomBar.SetOnNavigationItemSelectedListener(null);
_bottomBar.Dispose();
_bottomBar = null;
}
if (_frameLayout != null)
{
_frameLayout.Dispose();
_frameLayout = null;
}
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
Element.ChildAdded -= PagesChanged;
Element.ChildRemoved -= PagesChanged;
Element.ChildrenReordered -= PagesChanged;
if (_rootLayout != null)
{
RemoveAllViews();
foreach (Page pageToRemove in Element.Children)
{
var pageRenderer = Platform.GetRenderer(pageToRemove);
if (pageRenderer != null)
{
pageRenderer.View.RemoveFromParent();
pageRenderer.Dispose();
}
}
if (_bottomNav != null)
{
_bottomNav.SetOnNavigationItemSelectedListener(null);
_bottomNav.Dispose();
_bottomNav = null;
}
_rootLayout.Dispose();
_rootLayout = null;
}
}
base.Dispose(disposing);
}
protected override async void OnElementChanged(ElementChangedEventArgs <BottomBarPage> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
_element = e.NewElement;
if (_bottomNavigationView == null)
{
_rootLayout = new Android.Widget.RelativeLayout(Context)
{
LayoutParameters = new LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent)
};
AddView(_rootLayout);
_frameLayout = new FrameLayout(Context)
{
LayoutParameters = new ActionBar.LayoutParams(LayoutParams.MatchParent,
LayoutParams.MatchParent, GravityFlags.Fill)
};
_rootLayout.AddView(_frameLayout);
_bottomNavigationView = new BottomNavigationViewEx(Context)
{
LayoutParameters =
new Android.Widget.RelativeLayout.LayoutParams(LayoutParams.MatchParent,
LayoutParams.WrapContent)
};
(_bottomNavigationView.LayoutParameters as Android.Widget.RelativeLayout.LayoutParams)?.AddRule(LayoutRules.AlignParentBottom);
_bottomNavigationView.SetOnNavigationItemSelectedListener(this);
if (_element.BarTextColor != default(Color))
{
_bottomNavigationView.ItemTextColor = ColorStateList.ValueOf(_element.BarTextColor.ToAndroid());
_bottomNavigationView.ItemIconTintList = ColorStateList.ValueOf(_element.BarTextColor.ToAndroid());
}
if (_element.BarBackgroundColor != default(Color))
{
_bottomNavigationView.SetBackgroundColor(_element.BarBackgroundColor.ToAndroid());
}
foreach (var page in Element.Children)
{
await AddPage(page);
}
_rootLayout.AddView(_bottomNavigationView, 1);
_bottomNavigationView.EnableShiftingMode(false);
_bottomNavigationView.EnableItemShiftingMode(false);
ChangeCurrentPage(Element.Children[0]);
_element.ChildAdded += Element_ChildAdded;
_element.ChildRemoved += Element_ChildRemoved;
}
}
}
public static BottomNavigationViewEx SetupBottomBar(this BottomTabbedRenderer renderer, Android.Widget.RelativeLayout rootLayout, BottomNavigationViewEx bottomNav, int barId)
{
if (bottomNav != null)
{
rootLayout.RemoveView(bottomNav);
bottomNav.SetOnNavigationItemSelectedListener(null);
}
var barParams = new Android.Widget.RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.MatchParent,
BottomTabbedRenderer.BottomBarHeight.HasValue ? (int)rootLayout.Context.ToPixels(BottomTabbedRenderer.BottomBarHeight.Value) : ViewGroup.LayoutParams.WrapContent);
//Add alignment rules to close to the lower edge of the parent contro
barParams.AddRule(LayoutRules.AlignParentBottom);
bottomNav = new BottomNavigationViewEx(rootLayout.Context)
{
LayoutParameters = barParams,
Id = barId
};
if (BottomTabbedRenderer.BackgroundColor.HasValue)
{
bottomNav.SetBackgroundColor(BottomTabbedRenderer.BackgroundColor.Value);
}
if (BottomTabbedRenderer.ItemIconTintList != null)
{
bottomNav.ItemIconTintList = BottomTabbedRenderer.ItemIconTintList;
}
if (BottomTabbedRenderer.ItemTextColor != null)
{
bottomNav.ItemTextColor = BottomTabbedRenderer.ItemTextColor;
}
if (BottomTabbedRenderer.ItemBackgroundResource.HasValue)
{
bottomNav.ItemBackgroundResource = BottomTabbedRenderer.ItemBackgroundResource.Value;
}
//The listening callback method "setOnNavigationItemSelectedListener()", which defaults to the first entry being the first item selected, can be set by
//"navigation.getMenu().getItem(index).setChecked(true);"
bottomNav.SetOnNavigationItemSelectedListener(renderer);
rootLayout.AddView(bottomNav, 1, barParams);
return(bottomNav);
}
public static BottomNavigationViewEx SetupBottomBar(this BottomTabbedRenderer renderer, Android.Widget.RelativeLayout rootLayout, BottomNavigationViewEx bottomNav, int barId)
{
if (bottomNav != null)
{
rootLayout.RemoveView(bottomNav);
bottomNav.SetOnNavigationItemSelectedListener(null);
}
var barParams = new Android.Widget.RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.MatchParent,
BottomTabbedRenderer.BottomBarHeight.HasValue ? (int)rootLayout.Context.ToPixels(BottomTabbedRenderer.BottomBarHeight.Value) : ViewGroup.LayoutParams.WrapContent);
barParams.AddRule(LayoutRules.AlignParentBottom);
bottomNav = new BottomNavigationViewEx(rootLayout.Context)
{
LayoutParameters = barParams,
Id = barId
};
if (BottomTabbedRenderer.BackgroundColor.HasValue)
{
bottomNav.SetBackgroundColor(BottomTabbedRenderer.BackgroundColor.Value);
}
if (BottomTabbedRenderer.ItemIconTintList != null)
{
bottomNav.ItemIconTintList = BottomTabbedRenderer.ItemIconTintList;
}
if (BottomTabbedRenderer.ItemTextColor != null)
{
bottomNav.ItemTextColor = BottomTabbedRenderer.ItemTextColor;
}
if (BottomTabbedRenderer.ItemBackgroundResource.HasValue)
{
bottomNav.ItemBackgroundResource = BottomTabbedRenderer.ItemBackgroundResource.Value;
}
bottomNav.SetOnNavigationItemSelectedListener(renderer);
rootLayout.AddView(bottomNav, 1, barParams);
return(bottomNav);
}
protected override void Dispose(bool disposing)
{
if (disposing && Element != null)
{
Element.ChildAdded -= PagesChanged;
Element.ChildRemoved -= PagesChanged;
Element.ChildrenReordered -= PagesChanged;
if (rootLayout != null)
{
//TODO Cleanup
RemoveAllViews();
foreach (Page pageToRemove in Element.Children)
{
IVisualElementRenderer pageRenderer = Platform.GetRenderer(pageToRemove);
if (pageRenderer != null)
{
pageRenderer.ViewGroup.RemoveFromParent();
pageRenderer.Dispose();
}
}
if (bottomNav != null)
{
bottomNav.SetOnNavigationItemSelectedListener(null);
bottomNav.Dispose();
bottomNav = null;
}
rootLayout.Dispose();
rootLayout = null;
}
}
base.Dispose(disposing);
}
protected override void OnElementChanged(ElementChangedEventArgs <BottomTabbedPage> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
BottomTabbedPage bottomBarPage = e.NewElement;
if (_bottomBar == null)
{
_pageController = PageController.Create(bottomBarPage);
_rootLayout = new LinearLayout(Context)
{
LayoutParameters = new LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent)
};
AddView(_rootLayout);
// create a view which will act as container for Page's
_frameLayout = new FrameLayout(Context)
{
LayoutParameters = new LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent)
};
_rootLayout.AddView(_frameLayout);
_bottomBar = new BottomNavigationViewEx(Context)
{
LayoutParameters = new LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent)
};
_rootLayout.AddView(_bottomBar);
_bottomBar.SetOnNavigationItemSelectedListener(this);
if (BackgroundColor.HasValue)
{
_bottomBar.SetBackgroundColor(BackgroundColor.Value);
}
if (ItemIconTintList != null)
{
_bottomBar.ItemIconTintList = ItemIconTintList;
}
if (ItemTextColor != null)
{
_bottomBar.ItemTextColor = ItemTextColor;
}
if (ItemBackgroundResource.HasValue)
{
_bottomBar.ItemBackgroundResource = ItemBackgroundResource.Value;
}
// Resource.Drawable.bnv_selector
_menu = (BottomNavigationMenu)_bottomBar.Menu;
UpdateTabs();
}
if (bottomBarPage.CurrentPage != null)
{
SwitchContent(bottomBarPage.CurrentPage);
}
}
}