A UIButton with a nice scaling effect when the user touches down on it.

CDZScalingButton.h

//
//  CDZScalingButton.h
//  ScalingButton
//
//  Created by Chris Dzombak on 10/17/15.
//  Copyright © 2015 Chris Dzombak. All rights reserved.
//

@import UIKit;

@interface CDZScalingButton : UIButton
@end

CDZScalingButton.m

//
//  CDZScalingButton.h
//  ScalingButton
//
//  Created by Chris Dzombak on 10/17/15.
//  Copyright © 2015 Chris Dzombak. All rights reserved.
//

@import QuartzCore;
#import "CDZScalingButton.h"

@implementation CDZScalingButton

- (instancetype)initWithCoder:(NSCoder *)aDecoder {
    if ((self = [super initWithCoder:aDecoder])) {
        [self commonInit];
    }
    return self;
}

- (instancetype)initWithFrame:(CGRect)frame {
    if ((self = [super initWithFrame:frame])) {
        [self commonInit];
    }
    return self;
}

- (void)commonInit {
    self.titleLabel.textAlignment = NSTextAlignmentCenter;
    self.imageView.contentMode = UIViewContentModeCenter;
}

- (void)setHighlighted:(BOOL)highlighted {
    if (highlighted != self.highlighted) {
        CGFloat targetScale = highlighted ? 0.85f : 1.0f;
        NSTimeInterval duration = highlighted ? 0.3f : 0.2f;

        [UIView animateWithDuration:duration
                              delay:0.05
                            options:UIViewAnimationOptionCurveEaseOut
                         animations:^{
                             if (self.titleLabel.text.length) {
                                 self.titleLabel.layer.transform = CATransform3DMakeScale(targetScale, targetScale, 1.0f);
                             }
                             else if (self.imageView.image) {
                                 self.imageView.layer.transform = CATransform3DMakeScale(targetScale, targetScale, 1.0f);
                             }
                         }
                         completion:nil];
    }

    [super setHighlighted:highlighted];
}

@end