public TextFieldWithPopup(UITextField textField, UIViewController controller)
{
_controller = controller;
_textField = textField;
_button = new UIButton(new CGRect(0, 0, _textField.Bounds.Size.Width, _textField.Bounds.Size.Height));
_button.AutoresizingMask = UIViewAutoresizing.All;
_button.TouchUpInside += (sender, e) => {
var popPresenter = _customAlertController.AlertController.PopoverPresentationController;
if (popPresenter != null)
{
popPresenter.SourceView = textField;
popPresenter.SourceRect = textField.Bounds;
}
_controller.PresentViewController(_customAlertController.AlertController, true, null);
};
_textField.AddSubview(_button);
CustomizeTextField();
_button.TranslatesAutoresizingMaskIntoConstraints = false;
_button.TopAnchor.ConstraintEqualTo(_textField.TopAnchor, 0).Active = true;
_button.BottomAnchor.ConstraintEqualTo(_textField.BottomAnchor, 0).Active = true;
_button.LeadingAnchor.ConstraintEqualTo(_textField.LeadingAnchor, 0).Active = true;
_button.TrailingAnchor.ConstraintEqualTo(_textField.TrailingAnchor, 0).Active = true;
}
public static void AddBottomBorder(this UITextField textField, UIColor color, float height = 1f)
{
var border = textField.Subviews?.FirstOrDefault(view => view.AccessibilityIdentifier == "bottom_border");
border?.RemoveFromSuperview();
textField.BorderStyle = UITextBorderStyle.None;
textField.BackgroundColor = UIColor.Clear;
var borderLine = new UIView(new CGRect(0, textField.Frame.Height - height, textField.Frame.Width,
height))
{
BackgroundColor = color, AccessibilityIdentifier = "bottom_border"
};
textField.AddSubview(borderLine);
}