UITableView - Interface Import Problems

Elements Oxygene
1

Hello,
I have no idea what is going wrong. I’m trying to implement the UITableView-Interfaces but the compiler fails with the errors

(E179) Method "method tableView(tableView: not nullable UITableView) numberOfRowsInSection(section: NSInteger): NSInteger" not implemented as required for interface "IUITableViewDataSource"

and

(E179) Method "method tableView(tableView: not nullable UITableView) cellForRowAtIndexPath(indexPath: not nullable NSIndexPath): not nullable UITableViewCell" not implemented as required for interface "IUITableViewDataSource"

This is strange because the headers are exactly the same. What is wrong?

namespace TableViewTest;

interface

uses
  UIKit;

type
  [IBObject]
  RootViewController = public class(UIViewController, IUITableViewDataSource, IUITableViewDelegate)
  private
    
  protected        
    method tableView(tableView: UITableView) numberOfRowsInSection(section: NSInteger): NSInteger;
    method tableView(tableView: UITableView) cellForRowAtIndexPath(indexPath: NSIndexPath): UITableViewCell;    

    method tableView(tableView: UIKit.UITableView) didSelectRowAtIndexPath(indexPath: Foundation.NSIndexPath);
  public
    method viewDidLoad; override;
    method didReceiveMemoryWarning; override;
  end;

implementation

method RootViewController.viewDidLoad;
begin
  inherited viewDidLoad;
end;

method RootViewController.didReceiveMemoryWarning;
begin
  inherited didReceiveMemoryWarning;
end;

method RootViewController.tableView(tableView: UITableView) numberOfRowsInSection(section: NSInteger): NSInteger;
begin
  exit 0;
end;

method RootViewController.tableView(tableView: UITableView) cellForRowAtIndexPath(indexPath: NSIndexPath): UITableViewCell;
begin
  exit nil;
end;

method RootViewController.tableView(tableView: UITableView) didSelectRowAtIndexPath(indexPath: NSIndexPath);
begin
end;

end.

Best regards
Benny

2

They arent the same. You are missing “not nullable”.

3

So much overhead?! :frowning:
Okay… thank you!

4

And how do I get this working?

var dict:= NSDictionary.dictionaryWithObjectsAndKeys(UIFont.fontWithName('Helvetica') size(16), NSFontAttributeName, nil);