private void ConfigureMoreLessDescriptionButton( )
{
_isDescriptionCollapsed = true;
const int collapsedDescriptionLineCount = 3;
CGSize totalTextSize = new NSString(DuplicateConstraintedDescriptionLabel.Text)
.GetSizeUsingAttributes(new UIStringAttributes {
Font = DuplicateConstraintedDescriptionLabel.Font
});
nfloat multipleLinesOfTextTotalWidth = DuplicateConstraintedDescriptionLabel.Bounds.Size.Width * collapsedDescriptionLineCount;
if (multipleLinesOfTextTotalWidth < totalTextSize.Width)
{
View.LayoutIfNeeded( );
DuplicateConstraintedDescriptionLabel.Lines = collapsedDescriptionLineCount;
UITapGestureRecognizer gestureRecognizer = new UITapGestureRecognizer(() =>
{
// On Tap, toggle the collapsed flag.
_isDescriptionCollapsed = !_isDescriptionCollapsed;
// Update the number of lines allowed for the description & the hide/show button.
UIView.Animate(0.3, () =>
{
MoreLessDescriptionButton.Text = _isDescriptionCollapsed ? "Hide full description" : "Show full description";
DuplicateConstraintedDescriptionLabel.Lines = _isDescriptionCollapsed ? 0 : collapsedDescriptionLineCount;
View.LayoutIfNeeded( );
});
});
MoreLessDescriptionButton.UserInteractionEnabled = true;
MoreLessDescriptionButton.TextColor = UIColor.Clear.FromHex("#0cb6ea");
MoreLessDescriptionButton.AddGestureRecognizer(gestureRecognizer);
}
else
{
HideMoreLessDescriptionButton( );
}
}
void ReleaseDesignerOutlets()
{
if (MoreLessDescriptionHeightConstraint != null)
{
MoreLessDescriptionHeightConstraint.Dispose();
MoreLessDescriptionHeightConstraint = null;
}
if (DescriptionDetailsLabel != null)
{
DescriptionDetailsLabel.Dispose();
DescriptionDetailsLabel = null;
}
if (DuplicateConstraintedDescriptionLabel != null)
{
DuplicateConstraintedDescriptionLabel.Dispose();
DuplicateConstraintedDescriptionLabel = null;
}
if (ImageCollectionView != null)
{
ImageCollectionView.Dispose();
ImageCollectionView = null;
}
if (ImageCollectionViewHeightConstraint != null)
{
ImageCollectionViewHeightConstraint.Dispose();
ImageCollectionViewHeightConstraint = null;
}
if (MoreLessDescriptionButton != null)
{
MoreLessDescriptionButton.Dispose();
MoreLessDescriptionButton = null;
}
}
