UITableView.ScrollRectToVisible() doesn't scroll to bottom

I have a table view containing a variable amount of sections and custom cells. On some occasions, a cell may resize within RowSelected(). Whenever that happens, I'd like to also make sure the cell is completely visible after resizing (enlarging) it.

I have that working in another table that just modifies the underlying data so that the table view source will provide a larger cell. I then reload the cell and scroll it visible like so:

// Modify data
//...

// Reload cell
tableView.ReloadRows(new NSIndexPath[] { indexPath }, UITableViewRowAnimation.None);
tableView.ScrollRectToVisible(tableView.CellAt(indexPath).Frame, true);

The problem arises in a table view where resizing may not only be triggered by RowSelected(), but also by events on UI elements within the cells.

The events then call a method to reload the cell:

void updateCell() {
  if (cell.Superview != null) {
    UITableView tableView = (UITableView)cell.Superview;
    tableView.ReloadRows(new NSIndexPath[] { indexPath }, UITableViewRowAnimation.None);

    // Get the new (possibly enlarged) frame
    RectangleF frame = tableView.CellAt(indexPath).Frame;
    Console.WriteLine("This really is the new large frame, height: {0}", frame.Height);

    // Try to scroll it visible
    tableView.ScrollRectToVisible(frame, true);
  }
}

This scrolls fine for all cells but the bottom-most. It only makes the old frame of that cell visible. I double-开发者_高级运维checked that it really provides the new cell frame to ScrollRectToVisible().

So it seems ScrollRectToVisible() is bound to the old content size of the table - even after reloading rows. I tried to work around that by providing a new content size with the calculated difference in height. That does work but feels really hackish to me.

Is there some cleaner way to do things?

Thanks in advance

Instead using this:

tableView.ScrollRectToVisible(_: animated: )

Use it to scroll UITableView to bottom row:

tableView.scrollToRow(at: at: animated: )