Re: @property and @synthesize not working
Re: @property and @synthesize not working
- Subject: Re: @property and @synthesize not working
- From: Andrew Merenbach <email@hidden>
- Date: Wed, 13 Aug 2008 18:55:30 -0700
On Aug 13, 2008, at 6:47 PM, Nathan Gilmore wrote:
Hello everyone,
I am a newbie and I am having trouble getting my setter to work when
I use @synthesize. Here is the code:
**Header File**
@interface DayTaskController : NSArrayController {
NSCalendarDate *searchDate;
}
- (void)search:(id)sender;
@property(readwrite, assign) NSCalendarDate *searchDate;
@end
**Implementation File**
@implementation DayTaskController
@synthesize searchDate;
@synthesize appController;
.
.
.
**AppController**
I try and just set the searchdate field and then output it:
- (id) init
{
[super init];
[self setDayOneDate:[NSCalendarDate calendarDate]];
NSLog(@"self dayOneDate = %@",dayOneDate);
[dayOneTasks setSearchDate:dayOneDate];
NSLog(@"dayOneTasks search date = %@", [dayOneTasks searchDate]);
return self;
}
The above code gives this output:
2008-08-13 21:30:23.081 LifeTask2[20085:10b] self dayOneDate =
2008-08-13 21:30:23 -0400
2008-08-13 21:30:23.082 LifeTask2[20085:10b] dayOneTasks search date
= (null)
Any suggestions as to what I am doing wrong?
Thank you!
Nathan
Hi, Nathan!
Have you checked to ensure that dayOneTasks itself is not nil? Also,
are you using Garbage Collection? If *not*, then try changing from
"assign" to "retain" in your property declaration.
Also, a couple of suggestions: be sure to write your first line as
"self = [super init];" (instead of "[super init];" by itself).
Additionally, you may wish to consider using the standard property
syntax, such as:
dayOneTasks.searchDate = dayOneDate;
NSLog(@"dayOneTasks search date = %@", dayOneTasks.searchDate);
-- instead of using the bracketed accessors. That's one reason, in my
opinion, that properties are a good idea -- they can simplify syntax
and/or improve readability for certain cases.
Cheers,
Andrew
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