Easily create animatable properties without needing to do the work twice when you don't want them animated!

UIView+MDConditionalAnimations.h

//
//  UIView+MDConditionalAnimations.h
//  MDConditionalAnimations
//
//  Created by Dimitri Bouniol on 3/6/13.
//  Copyright (c) 2013 Dimitri Bouniol. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface UIView (MDConditionalAnimations)

+ (void)conditionallyAnimate:(BOOL)animate withDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion NS_AVAILABLE_IOS(4_0);

+ (void)conditionallyAnimate:(BOOL)animate withDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); // delay = 0.0, options = 0

+ (void)conditionallyAnimate:(BOOL)animate withDuration:(NSTimeInterval)duration animations:(void (^)(void))animations NS_AVAILABLE_IOS(4_0); // delay = 0.0, options = 0, completion = NULL

@end

UIView+MDConditionalAnimations.m

//
//  UIView+MDConditionalAnimations.m
//  MDConditionalAnimations
//
//  Created by Dimitri Bouniol on 3/6/13.
//  Copyright (c) 2013 Dimitri Bouniol. All rights reserved.
//

#import "UIView+MDConditionalAnimations.h"

@implementation UIView (MDConditionalAnimations)

+ (void)conditionallyAnimate:(BOOL)animate withDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion
{
    if (animate) {
        [self animateWithDuration:duration delay:delay options:options animations:animations completion:completion];
    } else {
        animations();
        if (completion)
            completion(YES);
    }
}

+ (void)conditionallyAnimate:(BOOL)animate withDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion
{
    if (animate) {
        [self animateWithDuration:duration animations:animations completion:completion];
    } else {
        animations();
        if (completion)
            completion(YES);
    }
}

+ (void)conditionallyAnimate:(BOOL)animate withDuration:(NSTimeInterval)duration animations:(void (^)(void))animations
{
    if (animate) {
        [self animateWithDuration:duration animations:animations];
    } else {
        animations();
    }
}

@end