UIView category which spreads antialiasing to layers

UIView+LayerEdgeAntialiasing

//  Originally found at http://pastebin.com/kdUHWMZf
//  Fixed the recursion not working on layers of subviews.

@interface UIView (LayerEdgeAntialiasing)

/** Uses the -setAllowsEdgeAntialiasing: method from CALayer prior to iOS 7, and also can applies it to every sublayers (and sublayers's of sublayers', and so on) if you want to. */
@property (nonatomic, assign) BOOL allowsLayerEdgeAntialiasing;
- (void)setAllowsLayerEdgeAntialiasing:(BOOL)allowsLayerEdgeAntialiasing applyToSublayers:(BOOL)applyToSublayers;

@end

@implementation UIView (LayerEdgeAntialiasing)

- (BOOL)allowsLayerEdgeAntialiasing {
    if([CALayer instancesRespondToSelector:@selector(setAllowsEdgeAntialiasing:)]) {
        return [[self layer] allowsEdgeAntialiasing];
    }
    return NO;
}

- (void)setAllowsLayerEdgeAntialiasing:(BOOL)allowsLayerEdgeAntialiasing {
    [self setAllowsLayerEdgeAntialiasing:allowsLayerEdgeAntialiasing applyToSublayers:NO];
}

- (void)setAllowsLayerEdgeAntialiasing:(BOOL)allowsLayerEdgeAntialiasing applyToSublayers:(BOOL)applyToSublayers
{
    if([CALayer instancesRespondToSelector:@selector(setAllowsEdgeAntialiasing:)])
    {
        if ([[self layer] allowsEdgeAntialiasing] != allowsLayerEdgeAntialiasing) {
            [[self layer] setAllowsEdgeAntialiasing:allowsLayerEdgeAntialiasing];
            if (applyToSublayers) {
                [[self subviews] enumerateObjectsUsingBlock:^(UIView *subview, NSUInteger idx, BOOL *stop) {
                    [subview setAllowsLayerEdgeAntialiasing:allowsLayerEdgeAntialiasing applyToSublayers:applyToSublayers];
                }];
            }
        }
    }
}

@end