setting new properties in category interface/implementation

Question

Ok, so I have this, but it wont work:

@interface UILabel (touches)

@property (nonatomic) BOOL isMethodStep;

@end


@implementation UILabel (touches)

-(BOO         


        

Answer 1

It seems as if since Xcode 7 (7.0.1, 7A1001), properties are supported in categories. I noticed that Xcode generates categories now for Core Data subclasses.

For example, I got the files:

Location+CoreDataProperties.h

#import "Location.h"

NS_ASSUME_NONNULL_BEGIN

@interface Location (CoreDataProperties)

@property (nullable, nonatomic, retain) NSNumber *altitude;
@property (nullable, nonatomic, retain) NSNumber *latitude;
@property (nullable, nonatomic, retain) NSNumber *longitude;

@end

NS_ASSUME_NONNULL_END

Location+CoreDataProperties.m

#import "Location+CoreDataProperties.h"

@implementation Location (CoreDataProperties)

@dynamic altitude;
@dynamic latitude;
@dynamic longitude;

@end

So looks like properties in categories might work now. I haven't tested on non-Core Data classes.

What I've noticed is that they do include the category file back into the original class:

Location.h

@interface Location : NSManagedObject

@end

#import "Location+CoreDataProperties.h"

This allows the original class to edit the properties specified by the category.