Animate sequence of animations

AnimateSequence.h

#import <Foundation/Foundation.h>

@interface AnimateSequence : NSObject

+ (void)animate:(NSArray*)blocks duration:(NSTimeInterval)duration;

@end

AnimateSequence.m

#import "AnimateSequence.h"

@implementation AnimateSequence

+ (void)animate:(NSArray*)blocks duration:(NSTimeInterval)duration
{
	[AnimateSequence animate:blocks duration:duration index:0];
}

+ (void)animate:(NSArray *)blocks duration:(NSTimeInterval)duration index:(NSUInteger)i
{
	if (i >= blocks.count) {
		return;
	}

	[UIView animateWithDuration:duration animations:[blocks objectAtIndex:i] completion:^(BOOL finished) {
		[AnimateSequence animate:blocks duration:duration index:(i + 1)];
	}];
}

@end

example.m

- (void)bounce
{
	NSMutableArray* blocks = [NSMutableArray new];
	[blocks addObject:^{
		[self.contentScrollView setContentOffset:(CGPoint){34.0, 0.0}];
	}];
	[blocks addObject:^{
		[self.contentScrollView setContentOffset:(CGPoint){self.closedXOffset, 0.0}];
	}];
	[blocks addObject:^{
		[self.contentScrollView setContentOffset:(CGPoint){12.0, 0.0}];
	}];
	[blocks addObject:^{
		[self.contentScrollView setContentOffset:(CGPoint){self.closedXOffset, 0.0}];
	}];
	[AnimateSequence animate:blocks duration:0.11f];
}