public override void LayoutSubviews()
{
if (_shadowView != null)
{
if (_shadowView.Superview == null)
{
Superview.InsertSubviewBelow(_shadowView, this);
}
_shadowView?.SetNeedsLayout();
}
base.LayoutSubviews();
}
private void InsertSubview(UIView view)
{
Superview.InsertSubviewBelow(view, this);
var verticalConstraint = NSLayoutConstraint.Create(this, NSLayoutAttribute.CenterY, NSLayoutRelation.Equal,
view, NSLayoutAttribute.CenterY, 1, 0);
var leadingConstraint = NSLayoutConstraint.Create(this, NSLayoutAttribute.Leading, NSLayoutRelation.Equal,
view, NSLayoutAttribute.Leading, 1, 0);
var trailingConstraint = NSLayoutConstraint.Create(this, NSLayoutAttribute.Trailing, NSLayoutRelation.Equal,
view, NSLayoutAttribute.Trailing, 1, 0);
Superview.AddConstraints(new[] { verticalConstraint, leadingConstraint, trailingConstraint });
}
public override void MovedToSuperview()
{
if (_shadowLayer != null)
{
return;
}
_shadowLayer = new UIView {
BackgroundColor = UIColor.Red
};
_shadowLayer.Layer.ShadowColor = UIColor.DarkGray.CGColor;
_shadowLayer.Layer.ShadowOffset = new CGSize(0.0f, 1f);
_shadowLayer.Layer.ShadowOpacity = 1f;
_shadowLayer.Layer.ShadowRadius = _requestedElevation < 0f ? 3f:_requestedElevation;
_shadowLayer.Layer.MasksToBounds = false;
_shadowLayer.Layer.ShouldRasterize = true;
_shadowLayer.Layer.RasterizationScale = UIScreen.MainScreen.Scale;
Superview.InsertSubviewBelow(_shadowLayer, this);
}
private void initialize()
{
//Make new tableview and do some settings
AutoCompleteTableView = new UITableView();
AutoCompleteTableView.Layer.CornerRadius = 5; //rounded corners
AutoCompleteTableView.ContentInset = UIEdgeInsets.Zero;
AutoCompleteTableView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight; //for resizing (switching from table to portait for example)
AutoCompleteTableView.Bounces = false;
AutoCompleteTableView.BackgroundColor = UIColor.Clear;
AutoCompleteTableView.TranslatesAutoresizingMaskIntoConstraints = false;
AutoCompleteTableView.Source = this.AutoCompleteViewSource;
AutoCompleteTableView.TableFooterView = new UIView();
AutoCompleteTableView.Hidden = true;
//Some textfield settings
this.TranslatesAutoresizingMaskIntoConstraints = false;
this.Delegate = this;
this.AutocorrectionType = UITextAutocorrectionType.No;
this.ClearButtonMode = UITextFieldViewMode.WhileEditing;
var isTableViewController = _parentTableViewController ?? (_parentViewController as UITableViewController);
//if parent is tableviewcontroller
if (isTableViewController != null)
{
_parentIsUITableViewController = true;
if (_parentTableViewController == null)
{
_parentTableViewController = isTableViewController;
}
_parentTableViewBounces = _parentTableViewController.TableView.Bounces;
_parentTableViewAllowsSelection = _parentTableViewController.TableView.AllowsSelection;
//Add the view to the contentview of the cell
Superview.AddSubview(AutoCompleteTableView);
UITableViewCell cell = Superview.Superview as UIKit.UITableViewCell;
//Get indexpath to set the constraint to the right cell
NSIndexPath indexPath = _parentTableViewController.TableView.IndexPathForCell(cell);
if (indexPath == null)
{
Console.WriteLine("Should be initialized in the ViewDidAppear and not in the ViewDidLoad!");
return;
}
//add constraints
Superview.AddConstraints(
AutoCompleteTableView.WithSameCenterY(this).Plus((AutocompleteTableViewHeight / 2) + 10 + cell.Frame.Height * indexPath.Row),
AutoCompleteTableView.WithSameWidth(this),
AutoCompleteTableView.WithSameLeft(this),
AutoCompleteTableView.Height().EqualTo(AutocompleteTableViewHeight)
);
}
else
{
Superview.InsertSubviewBelow(AutoCompleteTableView, _parentViewController.View);
//add constraints
Superview.AddConstraints(
AutoCompleteTableView.AtTopOf(this, this.Frame.Height - 5),
AutoCompleteTableView.WithSameWidth(this),
AutoCompleteTableView.WithSameLeft(this),
AutoCompleteTableView.Height().EqualTo(AutocompleteTableViewHeight)
);
}
//listen to edit events
this.EditingChanged += async(sender, eventargs) =>
{
if (this.Text.Length > StartAutoCompleteAfterTicks)
{
showAutoCompleteView();
await UpdateTableViewData();
}
};
this.EditingDidEnd += (sender, eventargs) =>
{
hideAutoCompleteView();
};
}