> On 8 Sep 2016, at 9:27 PM, Raimond Hettrich <sa...@onlinehome.de> wrote:
>
> @interface Document : NSDocument {
> NSMutableArray *tableViewArray;
> }
>
> @property (copy) NSMutableArray *tableViewArray;
>
>
> @end
>
>
> //
> // Document.m
> // Test
> //
>
> #import "Document.h"
>
> @interface Document ()
>
> @end
>
> @implementation Document
> @synthesize tableViewArray;
>
There’s another problem, which is probably more pertinent to your issue than
the one I mentioned about NSView’s -init method (I have sort of grokked what
your protocol is doing now, though to be frank the design and method naming is
horrible).
Above, you have an ivar called ‘tableViewArray’, then you synthesize a property
called ‘tableViewArray’ which will be backed by a variable called
‘_tableViewArray’. It is NOT backed by ‘tableViewArray’.
Your code only references the ivar, not the property, but I expect if you have
bindings (which you alluded to, being in NSArrayController), then these will
bind to the property, not the ivar. These are two completely different things,
despite being named similarly. Unfortunately you’ve run into a trap that Apple
have set for the unwary with automatic synthesis and properties. If you want
the propery to specifically be backed by an ivar you declared, you need to
explicitly indicate that:
@synthesize tableViewArray = tableViewArray;
Alternatively, don’t declare your own ivar at all and rely on autosynthesis,
and always reference the property:
self.tableViewArray
whenever you need to.
Do one or the other, but not both.
Also, as a general point, read up on model-view-controller design principles,
designated initializers and cocoa naming conventions for methods. The naming of
the method -getArray: is misleading to say the least.
—Graham
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