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

You could inject an associated object during runtime.

#import 

@interface UIView (Private)

@property (nonatomic, assign) CGPoint initialTouchPoint;
@property (nonatomic, strong) UIWindow *alertWindow;

@end

@implementation UIView (Private)

@dynamic initialTouchPoint, alertWindow;

- (CGPoint)initialTouchPoint {
    return CGPointFromString(objc_getAssociatedObject(self, @selector(initialTouchPoint)));
}

- (void)setInitialTouchPoint:(CGPoint)initialTouchPoint {
    objc_setAssociatedObject(self, @selector(initialTouchPoint), NSStringFromCGPoint(initialTouchPoint), OBJC_ASSOCIATION_RETAIN);
}

- (void)setAlertWindow:(UIWindow *)alertWindow {
    objc_setAssociatedObject(self, @selector(alertWindow), alertWindow, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (UIWindow *)alertWindow {
    return objc_getAssociatedObject(self, @selector(alertWindow));
}

@end