CALayer *sublayer = [CALayer layer];

    sublayer.backgroundColor = [UIColor purpleColor].CGColor;

    sublayer.shadowOffset = CGSizeMake(, );

    sublayer.shadowRadius = 5.0;

    sublayer.shadowColor = [UIColor blackColor].CGColor;

    sublayer.shadowOpacity = 0.8;

    sublayer.frame = CGRectMake(, , , );

    sublayer.borderColor = [UIColor blackColor].CGColor;

    sublayer.borderWidth = 2.0;

    sublayer.cornerRadius = 10.0;

    [self.view.layer addSublayer:sublayer];

    CALayer *imageLayer = [CALayer layer];

    imageLayer.frame = sublayer.bounds;

    imageLayer.cornerRadius = 10.0;

    imageLayer.contents = (id)[UIImage imageNamed:@"snaguosha.png"].CGImage;

    imageLayer.masksToBounds = YES;

    [sublayer addSublayer:imageLayer];

    CALayer *customDrawn = [CALayer layer];

    customDrawn.delegate = self;

    customDrawn.backgroundColor = [UIColor greenColor].CGColor;

    customDrawn.frame = CGRectMake(, , , );

    customDrawn.shadowOffset = CGSizeMake(, );

    customDrawn.shadowRadius = 5.0;

    customDrawn.shadowColor = [UIColor blackColor].CGColor;

    customDrawn.shadowOpacity = ;

    customDrawn.cornerRadius = 10.0;

    customDrawn.borderColor = [UIColor blackColor].CGColor;

    customDrawn.borderWidth = 2.0;

    customDrawn.masksToBounds = YES;

    [self.view.layer addSublayer:customDrawn];

    [customDrawn setNeedsDisplay];