.h

#import?

#import?

@interface?UIButton (SCLargeRange)

- (void)setEnlargeEdge:(CGFloat) size;

- (void)setEnlargeEdgeWithTop:(CGFloat) top right:(CGFloat) right bottom:(CGFloat) bottom left:(CGFloat) left;

@end

.m

#import?"UIButton+SCLargeRange.h"

@implementation?UIButton (SCLargeRange)

static?char?topNameKey;

static?char?rightNameKey;

static?char?bottomNameKey;

static?char?leftNameKey;

- (void)setEnlargeEdge:(CGFloat) size

{

?objc_setAssociatedObject(self, &topNameKey, [NSNumber?numberWithFloat:size],?OBJC_ASSOCIATION_COPY_NONATOMIC);

?objc_setAssociatedObject(self, &rightNameKey, [NSNumber?numberWithFloat:size],?OBJC_ASSOCIATION_COPY_NONATOMIC);

?objc_setAssociatedObject(self, &bottomNameKey, [NSNumber?numberWithFloat:size],?OBJC_ASSOCIATION_COPY_NONATOMIC);

?objc_setAssociatedObject(self, &leftNameKey, [NSNumber?numberWithFloat:size],?OBJC_ASSOCIATION_COPY_NONATOMIC);

}

- (void)setEnlargeEdgeWithTop:(CGFloat) top right:(CGFloat) right bottom:(CGFloat) bottom left:(CGFloat) left

{

?objc_setAssociatedObject(self, &topNameKey, [NSNumber?numberWithFloat:top],?OBJC_ASSOCIATION_COPY_NONATOMIC);

?objc_setAssociatedObject(self, &rightNameKey, [NSNumber?numberWithFloat:right],?OBJC_ASSOCIATION_COPY_NONATOMIC);

?objc_setAssociatedObject(self, &bottomNameKey, [NSNumber?numberWithFloat:bottom],?OBJC_ASSOCIATION_COPY_NONATOMIC);

?objc_setAssociatedObject(self, &leftNameKey, [NSNumber?numberWithFloat:left],?OBJC_ASSOCIATION_COPY_NONATOMIC);

}

- (CGRect)enlargedRect

{

?NSNumber* topEdge =?objc_getAssociatedObject(self, &topNameKey);

?NSNumber* rightEdge =?objc_getAssociatedObject(self, &rightNameKey);

?NSNumber* bottomEdge =?objc_getAssociatedObject(self, &bottomNameKey);

?NSNumber* leftEdge =?objc_getAssociatedObject(self, &leftNameKey);

?if?(topEdge && rightEdge && bottomEdge && leftEdge)

? ? {

?return?CGRectMake(self.bounds.origin.x?- leftEdge.floatValue,

?self.bounds.origin.y?- topEdge.floatValue,

?self.bounds.size.width?+ leftEdge.floatValue?+ rightEdge.floatValue,

?self.bounds.size.height?+ topEdge.floatValue?+ bottomEdge.floatValue);

? ? }

?else

? ? {

?return?self.bounds;

? ? }

}

- (UIView*)hitTest:(CGPoint) point withEvent:(UIEvent*) event

{

?CGRect?rect = [self?enlargedRect];

?if?(CGRectEqualToRect(rect,?self.bounds))

? ? {

?return?[super?hitTest:point?withEvent:event];

? ? }

?return?CGRectContainsPoint(rect, point) ??self?:?nil;

}

@end