musicAnimation

gistfile1.txt

- (void)musicAnimation {
    
    CAReplicatorLayer *r = [[CAReplicatorLayer alloc] init];
    r.bounds = (CGRect){0,0,60,60};
    r.position = self.view.center;
    [self.view.layer addSublayer:r];
    
    CALayer *bar = [[CALayer alloc] init];
    bar.bounds = CGRectMake(0, 0, 8, 40);
    bar.position = CGPointMake(10, 75);
    bar.cornerRadius = 2.0;
    bar.backgroundColor = [[UIColor redColor] CGColor];
    [r addSublayer:bar];
    
    CABasicAnimation *move = [CABasicAnimation animationWithKeyPath:@"position.y"];
    move.toValue = @(bar.position.y-35.0f);
    move.duration = 0.5f;
    move.autoreverses = YES;
    move.repeatCount = CGFLOAT_MAX;
    
    [bar addAnimation:move forKey:nil];
    
    r.instanceCount = 3;
    r.instanceTransform = CATransform3DMakeTranslation(20, 0, 0);
    r.instanceDelay = 0.33f;
    r.masksToBounds = YES;
}