public override void ViewDidLoad()
{
this.AddOption ("Manual", LoadOnDemandManual, "Load on demand mode");
this.AddOption ("Auto", LoadOnDemandAuto, "Load on demand mode");
base.ViewDidLoad ();
this.photos.LoadDataFromJSONResource ("PhotosWithNames", "json", "photos");
this.names.LoadDataFromJSONResource ("PhotosWithNames", "json", "names");
this.listViewDataSource = new ListViewDataSource (this);
this.listViewDelegate = new ListViewDelegate (this);
listView.Frame = this.View.Bounds;
listView.BackgroundColor = new UIColor (0.0f, 1.0f, 0.0f, 0.5f);
listView.AutoresizingMask = UIViewAutoresizing.FlexibleHeight | UIViewAutoresizing.FlexibleWidth;
listView.Delegate = this.listViewDelegate;
listView.DataSource = this.listViewDataSource;
listView.LoadOnDemandBufferSize = 5;
listView.LoadOnDemandMode = TKListViewLoadOnDemandMode.Manual;
listView.ContentInset = new UIEdgeInsets (10, 10, 10, 10);
this.View.AddSubview (listView);
listView.RegisterClassForCell(new ObjCRuntime.Class(typeof(CustomCardListViewCell)), "cell");
TKListViewLinearLayout layout = (TKListViewLinearLayout)listView.Layout;
layout.ItemSize = new CGSize (100, 120);
layout.ItemSpacing = 5;
layout.ItemAlignment = TKListViewItemAlignment.Stretch;
}
public override void ViewDidLoad()
{
base.ViewDidLoad ();
dataSource.LoadDataFromJSONResource ("ListViewSampleData", "json", "teams");
dataSource.GroupItemSourceKey = "items";
dataSource.FilterWithQuery ("key like 'Marketing'");
dataSource.GroupWithKey ("key");
this.UpdateData (3);
this.listViewDataSource = new ListViewDataSource (this);
this.listViewDelegate = new ListViewDelegate (this);
TKListView listView = new TKListView (this.View.Bounds);
listView.RegisterClassForCell (new ObjCRuntime.Class (typeof(TKListViewCell)), "cell");
listView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
listView.DataSource = this.listViewDataSource;
listView.Delegate = this.listViewDelegate;
listView.AllowsPullToRefresh = true;
listView.PullToRefreshTreshold = 70;
listView.PullToRefreshView.BackgroundColor = UIColor.Blue;
listView.PullToRefreshView.ActivityIndicator.Color = UIColor.White;
this.View.AddSubview (listView);
}
public override void ViewDidLoad()
{
base.ViewDidLoad ();
this.Photos = new TKDataSource ("PhotosWithNames", "json", "photos");
this.Names = new TKDataSource ("PhotosWithNames", "json", "names");
this.listViewDataSource = new ListViewDataSource (this);
TKListView listView = new TKListView (this.View.Bounds);
listView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
listView.DataSource = this.listViewDataSource;
this.View.AddSubview (listView);
listView.RegisterClassForCell (new Class(typeof(ImageWithTextListViewCell)), "cell");
TKListViewGridLayout layout = new TKListViewGridLayout();
layout.ItemAlignment = TKListViewItemAlignment.Center;
layout.SpanCount = 2;
layout.ItemSize = new CGSize (150, 200);
layout.LineSpacing = 60;
layout.ItemSpacing = 10;
listView.Layout = layout;
TKView view = new TKView ();
view.Fill = TKLinearGradientFill.WithColors (new UIColor[] {
new UIColor (0.35f, 0.68f, 0.89f, 0.89f),
new UIColor (0.35f, 0.68f, 1.0f, 1.0f),
new UIColor (0.85f, 0.8f, 0.2f, 0.8f)
});
listView.BackgroundView = view;
}
protected override void OnElementChanged(ElementChangedEventArgs <ListView> e)
{
_requestedScroll = null;
if (e.OldElement != null)
{
var controller = (IListViewController)e.OldElement;
var headerView = (VisualElement)controller.HeaderElement;
if (headerView != null)
{
headerView.MeasureInvalidated -= OnHeaderMeasureInvalidated;
}
var footerView = (VisualElement)controller.FooterElement;
if (footerView != null)
{
footerView.MeasureInvalidated -= OnFooterMeasureInvalidated;
}
e.OldElement.ScrollToRequested -= OnScrollToRequested;
e.OldElement.TemplatedItems.CollectionChanged -= OnCollectionChanged;
e.OldElement.TemplatedItems.GroupedCollectionChanged -= OnGroupedCollectionChanged;
}
if (e.NewElement != null)
{
if (Control == null)
{
_tableViewController = new FormsUITableViewController(e.NewElement);
SetNativeControl(_tableViewController.TableView);
if (Forms.IsiOS9OrNewer)
{
Control.CellLayoutMarginsFollowReadableWidth = false;
}
_insetTracker = new KeyboardInsetTracker(_tableViewController.TableView, () => Control.Window, insets => Control.ContentInset = Control.ScrollIndicatorInsets = insets, point =>
{
var offset = Control.ContentOffset;
offset.Y += point.Y;
Control.SetContentOffset(offset, true);
});
}
_shouldEstimateRowHeight = true;
//if the user specifies he wants to sacrifice performance we will do things like:
// - don't EstimateRowHeight anymore
if (e.NewElement.TakePerformanceHit)
{
_shouldEstimateRowHeight = false;
}
e.NewElement.ScrollToRequested += OnScrollToRequested;
e.NewElement.TemplatedItems.CollectionChanged += OnCollectionChanged;
e.NewElement.TemplatedItems.GroupedCollectionChanged += OnGroupedCollectionChanged;
UpdateRowHeight();
Control.Source = _dataSource = e.NewElement.HasUnevenRows ? new UnevenListViewDataSource(e.NewElement, _tableViewController) : new ListViewDataSource(e.NewElement, _tableViewController);
UpdateEstimatedRowHeight();
UpdateHeader();
UpdateFooter();
UpdatePullToRefreshEnabled();
UpdateIsRefreshing();
UpdateSeparatorColor();
UpdateSeparatorVisibility();
var selected = e.NewElement.SelectedItem;
if (selected != null)
{
_dataSource.OnItemSelected(null, new SelectedItemChangedEventArgs(selected));
}
}
base.OnElementChanged(e);
}
public UnevenListViewDataSource(ListViewDataSource source) : base(source)
{
}
