CODEWITHSUNDEEP
objective-ciosxcodemethodscategories
Ilya Lapan
Ilya Lapan

Reputation: 1103

Categories instance methods do not invoke

I have a class(Core Data Generated):

@interface Place : NSManagedObject

 @property (nonatomic, retain) NSString * title;
 @property (nonatomic, retain) NSString * subtitle;
 @property (nonatomic, retain) NSNumber * latitude;
 @property (nonatomic, retain) NSNumber * longitude;

@end
@implementation Place

@dynamic title;
@dynamic subtitle;
@dynamic latitude;
@dynamic longitude;

@end

Adn a category for it:

@interface Place (Create)
+ (Place *)placeWithTitle:(NSString *)title
        inManagedObjectContext:(NSManagedObjectContext *)context;

+(Place *) placeWithTitle:(NSString *)title andSubtitle:(NSString *)subtitle inManagedObjectContext:(NSManagedObjectContext *)context;
+(Place *) placeWithCoordinate:(CLLocationCoordinate2D) coordinate inManagedObjectContext:(NSManagedObjectContext *)context;
- (void) setLattitudeAndLongitudeByCoordinate:(CLLocationCoordinate2D) coordinate;


- (CLLocationCoordinate2D) coordinate;
@end

In this category a have to instance methods:

- (void) setLattitudeAndLongitudeByCoordinate:(CLLocationCoordinate2D) coordinate
{
    self.latitude=[NSNumber numberWithDouble:coordinate.latitude];//break point HERE
    self.longitude=[NSNumber numberWithDouble:coordinate.longitude];
}

-(CLLocationCoordinate2D) coordinate
{
    CLLocationCoordinate2D coord;//break point HERE
    coord.latitude=[self.latitude doubleValue];
    coord.longitude=[self.longitude doubleValue];
    return coord;
}

As you see i have to breakpoints there. Now, then i call those methods

#import "Place+Create.h"

-(void)someMethod
{
    [self.place setLattitudeAndLongitudeByCoordinate:coordiante];
}

It never seem to reach those breakpoints inside the method setLattitudeAndLogitudeByCoordinate, and debug shows that it even doesn't call them! Why?

Upvotes: 0

Views: 763

Answers (1)

Till
Till

Reputation: 27587

Is someMethod ever reached? Check that using a breakpoint or an extra NSLog at its head.

If not, then your problem is somewhere else as your program flow is different than you expected it to be.

If it is reached then self.place obviously is nil. That means you never initialized it and again, your program flow is different than you thought it would be.

Upvotes: 1

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