CALayer Basic Animation

CALayer+RNAnimations.h

#import <QuartzCore/QuartzCore.h>

@interface CALayer (RNAnimations)

- (void)setValue:(id)value forKeyPath:(NSString *)keyPath duration:(CFTimeInterval)duration delay:(CFTimeInterval)delay;

@end

CALayer+RNAnimations.m

#import "CALayer+RNAnimations.h"

@implementation CALayer (RNAnimations)

- (void)setValue:(id)value forKeyPath:(NSString *)keyPath duration:(CFTimeInterval)duration delay:(CFTimeInterval)delay
{
    [CATransaction begin];
    [CATransaction setDisableActions:YES];
    [self setValue:value forKeyPath:keyPath];
    CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:keyPath];
    anim.duration = duration;
    anim.beginTime = CACurrentMediaTime() + delay;
    anim.fillMode = kCAFillModeBoth;
    anim.fromValue = [[self presentationLayer] valueForKeyPath:keyPath];
    anim.toValue = value;
    [self addAnimation:anim forKey:keyPath];
    [CATransaction commit];
}

@end