UITableView RowSelected not being called? - xamarin.ios

Question

I have a UITableView and a subclassed UITableViewSource class:
table = new UITableView(window.Bounds);
table.Source = new CellSource();
public class CellSource : UITableViewSource
{
// etc etc
I'm trying to get the selected row, so implemented the RowSelected method in my source class:
public override void RowSelected(UITableView tableview, NSIndexPath indexpath) {
Console.WriteLine("User tapped");
}
However, tapping on the cells gives no response at all, not even when simply trying to write to the console.
I can post the complete classes if that will help?
Thanks.
EDIT
So, after I create my UITableView:
table = new UITableView(window.Bounds);
table.AutoresizingMask = UIViewAutoresizing.All;
table.SeparatorStyle = UITableViewCellSeparatorStyle.None;
table.BackgroundColor = UIColor.Clear;
table.Source = new CellSource();
I use my source class to parse an XML file, and populate a list:
List<Treasure> treasures = new List<Treasure>();
protected class Treasure {
public string cellTitle { get; set; }
public string cellTag { get; set; }
public string cellImage { get; set; }
public string audioFile { get; set; }
public string mainTitle { get; set; }
public string mainTag { get; set; }
public string mainBody { get; set; }
public string mainImage { get; set; }
public string mainCaption { get; set; }
}
public CellSource (/*string[] items*/)
{
Console.WriteLine("CellSource called");
string fileName = "treasuresiPhone.xml";
XDocument doc = XDocument.Load(fileName);
treasures = doc.Descendants("treasures").FirstOrDefault().Descendants("treasure").Select(p=> new Treasure() {
cellTitle = p.Element("celltitle").Value,
cellTag = p.Element("celltagline").Value,
cellImage = p.Element("cellimage").Value
}).ToList();
numCells = treasures.Count();
}
I then create a CGBitmapContext in another class, return the image, and set this as the cells image:
public UIImage DrawCell (string cellImage) {
string cellI = cellImage;
//create a new graphics context
int width = 320;
int height = 110;
CGBitmapContext ctx = new CGBitmapContext(IntPtr.Zero, width, height, 8, 4*width, CGColorSpace.CreateDeviceRGB(), CGImageAlphaInfo.PremultipliedFirst);
//load an image
var imagePath = (#cellI);
var image = UIImage.FromFile(imagePath).CGImage;
ctx.DrawImage(new RectangleF(0, 0, width, height), image);
UIImage returnedImage = new UIImage();
returnedImage = FromImage(ctx.ToImage());
return returnedImage;
}
I add some other test stuff like a label, and override the RowSelected method:
public override UITableViewCell GetCell (UITableView tableView, MonoTouch.Foundation.NSIndexPath indexPath) {
UITableViewCell cell = tableView.DequeueReusableCell (cellIdentifier);
cell = new UITableViewCell (UITableViewCellStyle.Default, cellIdentifier);
cell.UserInteractionEnabled = false;
UILabel secondViewLabel = new UILabel();
//if there are no cells create a new one
if (cell == null) {
Console.WriteLine("cell == null");
} else {
//create a new cellobject - this grabs the image and returns a CGBitmapContext
CellObject _cellObject = new CellObject();
cell.ImageView.Image = _cellObject.DrawCell(treasures[indexPath.Row].cellImage);
//add text
secondViewLabel.Tag = 1;
secondViewLabel.Text = treasures[indexPath.Row].cellTitle;
secondViewLabel.TextColor = UIColor.White;
secondViewLabel.TextAlignment = UITextAlignment.Center;
secondViewLabel.Lines = 0;
secondViewLabel.LineBreakMode = UILineBreakMode.WordWrap;
secondViewLabel.Font = UIFont.FromName("Helvetica", 16);
secondViewLabel.BackgroundColor = UIColor.FromRGB(205, 54, 51);
//get the width of the text
SizeF labelSize = secondViewLabel.StringSize(secondViewLabel.Text, secondViewLabel.Font);
secondViewLabel.Frame = new RectangleF(0, 110 - (labelSize.Height + 10), labelSize.Width + 20, labelSize.Height + 10);
//add a second view
UIView secondView = new UIView();
secondView.AddSubview(secondViewLabel);
cell.ContentView.AddSubview(secondView);
}
return cell;
}
public override void RowSelected(UITableView tableview, NSIndexPath indexpath) {
Console.WriteLine("User tapped");
}

Answer 1

In Monotouch UITableViewSource is the combined UITableViewDataSource and UITableViewDelegate for a UITableView. So, when you extend such class you can take advantage of methods within both data source and delegate.
Said this, I would modify a little bit your code (see comments).
public override UITableViewCell GetCell (UITableView tableView, MonoTouch.Foundation.NSIndexPath indexPath)
{
UITableViewCell cell = tableView.DequeueReusableCell (cellIdentifier);
// if there are no cells create a new one
if (cell == null) {
cell = new UITableViewCell (UITableViewCellStyle.Default, cellIdentifier);
// why do you set the interaction to false? Setting it to false disable interaction for your cell
cell.UserInteractionEnabled = true;
// create label and view here. You customize the cell with additional elements once
}
// update image and label here (you need to grab a reference for your label for example through the tag)
return cell;
}
Take also a look to Working with Tables and Cells in Xamarin documentation.
Hope it helps.