Custom Font Sizing in Xcode 6 Size Classes not working properly with Custom Fonts

Question

Xcode 6 has a new feature where fonts and font sizes in UILabel, UITextField, and UIButton can be s

Answer 1

None of these worked for me, but this did. You also need to use the system font in IB

#import 

@interface UILabelEx : UILabel


@end

#import "UILabelEx.h"
#import "Constants.h"

@implementation UILabelEx

- (void) traitCollectionDidChange: (UITraitCollection *) previousTraitCollection {
    [super traitCollectionDidChange: previousTraitCollection];

    self.font = [UIFont fontWithName:APP_FONT size:self.font.pointSize];   
}
@end