/// <summary>
/// Ons the element changed.
/// </summary>
/// <param name="e">E.</param>
protected override void OnElementChanged(ElementChangedEventArgs <SettingsView> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
// Fix scrollbar visibility and flash. https://github.com/xamarin/Xamarin.Forms/pull/10893
var recyclerView = new RecyclerView(new ContextThemeWrapper(Context, Resource.Style.settingsViewTheme), null, Resource.Attribute.settingsViewStyle);
recyclerView.NestedScrollingEnabled = false;
// When replaced, No animation.
//(recyclerView.GetItemAnimator() as DefaultItemAnimator).SupportsChangeAnimations = false;
_layoutManager = new SettingsViewLayoutManager(Context, e.NewElement);
recyclerView.SetLayoutManager(_layoutManager);
_divider = Context.GetDrawable(Resource.Drawable.divider);
_itemDecoration = new SVItemdecoration(_divider, e.NewElement);
recyclerView.AddItemDecoration(_itemDecoration);
SetNativeControl(recyclerView);
Control.Focusable = false;
Control.DescendantFocusability = DescendantFocusability.AfterDescendants;
UpdateSeparatorColor();
UpdateBackgroundColor();
UpdateRowHeight();
_adapter = new SettingsViewRecyclerAdapter(Context, e.NewElement, recyclerView);
Control.SetAdapter(_adapter);
_simpleCallback = new SettingsViewSimpleCallback(e.NewElement, ItemTouchHelper.Up | ItemTouchHelper.Down, 0);
_itemTouchhelper = new ItemTouchHelper(_simpleCallback);
_itemTouchhelper.AttachToRecyclerView(Control);
Element elm = Element;
while (elm != null)
{
elm = elm.Parent;
if (elm is Page)
{
break;
}
}
_parentPage = elm as Page;
_parentPage.Appearing += ParentPageAppearing;
e.NewElement.Root.CollectionChanged += RootCollectionChanged;
}
}
/// <summary>
/// Dispose the specified disposing.
/// </summary>
/// <returns>The dispose.</returns>
/// <param name="disposing">If set to <c>true</c> disposing.</param>
protected override void Dispose(bool disposing)
{
if (disposing)
{
foreach (var section in Element.Root)
{
if (section.HeaderView != null)
{
DisposeChildRenderer(section.HeaderView);
}
if (section.FooterView != null)
{
DisposeChildRenderer(section.FooterView);
}
}
foreach (var renderer in _shouldDisposeRenderers)
{
if (renderer.View.Handle != IntPtr.Zero)
{
renderer.View.RemoveFromParent();
renderer.View.Dispose();
}
renderer.Dispose();
}
_shouldDisposeRenderers.Clear();
_shouldDisposeRenderers = null;
Control.RemoveItemDecoration(_itemDecoration);
_parentPage.Appearing -= ParentPageAppearing;
_adapter?.Dispose();
_adapter = null;
_layoutManager?.Dispose();
_layoutManager = null;
_simpleCallback?.Dispose();
_simpleCallback = null;
_itemTouchhelper?.Dispose();
_itemTouchhelper = null;
_itemDecoration?.Dispose();
_itemDecoration = null;
_divider?.Dispose();
_divider = null;
Element.Root.CollectionChanged -= RootCollectionChanged;
}
base.Dispose(disposing);
}
/// <summary>
/// Ons the element changed.
/// </summary>
/// <param name="e">E.</param>
protected override void OnElementChanged(ElementChangedEventArgs <SettingsView> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
var recyclerView = new RecyclerView(Context);
_layoutManager = new SettingsViewLayoutManager(Context, e.NewElement);
recyclerView.SetLayoutManager(_layoutManager);
_divider = Context.GetDrawable(Resource.Drawable.divider);
_itemDecoration = new SVItemdecoration(_divider, e.NewElement);
recyclerView.AddItemDecoration(_itemDecoration);
SetNativeControl(recyclerView);
Control.Focusable = false;
Control.DescendantFocusability = DescendantFocusability.AfterDescendants;
UpdateSeparatorColor();
UpdateBackgroundColor();
UpdateRowHeight();
_adapter = new SettingsViewRecyclerAdapter(Context, e.NewElement, recyclerView);
Control.SetAdapter(_adapter);
_simpleCallback = new SettingsViewSimpleCallback(e.NewElement, ItemTouchHelper.Up | ItemTouchHelper.Down, 0);
_itemTouchhelper = new ItemTouchHelper(_simpleCallback);
_itemTouchhelper.AttachToRecyclerView(Control);
Element elm = Element;
while (elm != null)
{
elm = elm.Parent;
if (elm is Page)
{
break;
}
}
_parentPage = elm as Page;
_parentPage.Appearing += ParentPageAppearing;
e.NewElement.Root.CollectionChanged += RootCollectionChanged;
}
}