+ (CGPathRef)heartPath
{
    CGFloat W = 25;
    CGFloat marginX = 10;
    CGFloat marginY = 15/25.0 * W;
    CGFloat space = 5/25.0 * W;
    
    UIBezierPath *bezierPath = [UIBezierPath new];
    
    [bezierPath moveToPoint:(CGPointMake(marginX + W * 2, W * 4 + space))];
    [bezierPath addQuadCurveToPoint:CGPointMake(marginX, W * 2) controlPoint:CGPointMake(W, W * 4 - space)];
    [bezierPath addCurveToPoint:CGPointMake(marginX + W * 2, W * 2) controlPoint1:CGPointMake(marginX, marginY) controlPoint2:CGPointMake(marginX + W * 2, marginY)];
    [bezierPath addCurveToPoint:CGPointMake(marginX + W * 4, W * 2) controlPoint1:CGPointMake(marginX + W * 2, marginY) controlPoint2:CGPointMake(marginX + W * 4, marginY)];
    [bezierPath addQuadCurveToPoint:CGPointMake(marginX + W * 2, W * 4 + space) controlPoint:CGPointMake(marginX * 2 + W * 3, W * 4 - space)];
    
    [bezierPath closePath];
    
    CGAffineTransform T = CGAffineTransformMakeScale(3.0, 3.0);
    return CGPathCreateCopyByTransformingPath(bezierPath.CGPath, &T);
}

+ (CALayer *)replicatorLayer_Heart{
    
    CAReplicatorLayer *replicatorLayer = [CAReplicatorLayer new];
    replicatorLayer.frame = CGRectMake(0, 0, 200, 200);
    //    replicatorLayer.backgroundColor = [UIColor colorWithWhite:0 alpha:0.75].CGColor;
    
    CALayer *subLayer = [CALayer new];
    subLayer.bounds = CGRectMake(60, 105, 10, 10);
    subLayer.backgroundColor = [UIColor colorWithWhite:0.8 alpha:1.0].CGColor;
    subLayer.borderColor = [UIColor colorWithWhite:1.0 alpha:1.0].CGColor;
    subLayer.borderWidth = 1.0;
    subLayer.cornerRadius = 5.0;
    subLayer.shouldRasterize = YES;
    subLayer.rasterizationScale = [UIScreen mainScreen].scale;
    [replicatorLayer addSublayer:subLayer];
    
    CAKeyframeAnimation *move = [CAKeyframeAnimation animationWithKeyPath:@"position"];
    move.path = [self heartPath];
    move.repeatCount = INFINITY;
    move.duration = 6.0;
    //    move.autoreverses = YES;
    [subLayer addAnimation:move forKey:nil];
    
    replicatorLayer.instanceDelay = 6/50.0;
    replicatorLayer.instanceCount = 50;
    replicatorLayer.instanceColor = [UIColor orangeColor].CGColor;
    replicatorLayer.instanceGreenOffset = -0.03;
    
    return replicatorLayer;
}

- (void)setReplicatorLayerType:(YUReplicatorLayerType)replicatorLayerType
{
    CGFloat width = 100;
    UIView *aniView = [[UIView alloc] initWithFrame:CGRectMake(0, 150, width, width)];
    [self.view addSubview:aniView];
    [aniView.layer addSublayer: [YUReplicatorAnimation replicatorLayerWithType:replicatorLayerType]];
    self.view.backgroundColor = [UIColor grayColor];
}

- (void)showLoadingInView:(UIView *)view text:(NSString *)text
{
    [view addSubview:self];
    if (text) {
        self.text = text;
    }
    [self sizeToFit];
    
    // 创建渐变效果的layer
    CAGradientLayer *graLayer = [CAGradientLayer layer];
    graLayer.frame = self.bounds;
    graLayer.colors = @[(__bridge id)[[UIColor greenColor] colorWithAlphaComponent:0.3].CGColor,
                        (__bridge id)[UIColor yellowColor].CGColor,
                        (__bridge id)[[UIColor yellowColor] colorWithAlphaComponent:0.3].CGColor];
    
    graLayer.startPoint = CGPointMake(0, 0);//设置渐变方向起点
    graLayer.endPoint = CGPointMake(1, 0);  //设置渐变方向终点
    graLayer.locations = @[@(0.0), @(0.0), @(0.1)]; //colors中各颜色对应的初始渐变点
    
    // 创建动画
    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"locations"];
    animation.duration = 1.0f;
    animation.toValue = @[@(0.9), @(1.0), @(1.0)];
    animation.removedOnCompletion = NO;
    animation.repeatCount = HUGE_VALF;
    animation.fillMode = kCAFillModeForwards;
    [graLayer addAnimation:animation forKey:@"xindong"];
    
    // 将graLayer设置成textLabel的遮罩
    self.layer.mask = graLayer;
}