On 1 May 2013, at 23:51, Quincey Morris <quinceymor...@rivergatesoftware.com>
wrote:
> On May 1, 2013, at 08:34 , "Gerriet M. Denkmann" <gerr...@mdenkmann.de> wrote:
>
>> - (id)tableView:(NSTableView *)aTableView
>> objectValueForTableColumn:(NSTableColumn *)aTableColumn
>> row:(NSInteger)rowIndex
>> {
>> NSDictionary *aLine = self.dataArray[rowIndex];
>> NSTableCellView *cellView = [ aTableView makeViewWithIdentifier:
>> @"DieSpalte" owner: self ];
>> [ cellView.textField setStringValue: aLine[kNameKey] ];
>> [ cellView.imageView setImage: aLine[kImageKey] ];
>> NSLog(@"%s %ld %@",__FUNCTION__, rowIndex, cellView);
>> return cellView;
>> }
>
> This is wrong. You should not create a cell view in this method, and you
> should not return a cell view as a result. The value returned from this
> method becomes the the "objectValue" property of the cell view. Because
> you're trying to create the cell view in the wrong place, the table view is
> creating one for you (a different one), and that view isn't getting its text
> or image set to anything useful.
>
> Instead, you should be putting the above code in a
> 'tableView:viewForTableColumn:row:' delegate method. Since you're
> (apparently) not using any bindings within your cell view, you don't need
> objectValue at all -- neither the data source method nor the property.
You are absolutely right.
And I was confused, because before I implemented my data-source method
numberOfRowsInTableView: I was told: " *** Illegal NSTableView data source
(<TbViAppDelegate: 0x101a22760>). Must implement numberOfRowsInTableView: and
tableView:objectValueForTableColumn:row:" which seems not really true after all.
Thanks a lot!
Kind regards,
Gerriet.
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