Multiple Rounded corners with UIBezierPath using the | character

UIBezierPathRoundedCorner

  
// Create the path (with only the top-left corner rounded)
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:_categoryColorView.bounds
                                               byRoundingCorners:UIRectCornerTopLeft |
                                                                 UIRectCornerBottomLeft
                                                     cornerRadii:CGSizeMake(10.0, 10.0)];
        
// Create the shape layer and set its path
CAShapeLayer *maskLayerTop = [CAShapeLayer layer];
maskLayerTop.frame = _categoryColorView.bounds;
maskLayerTop.path = maskPath.CGPath;
_categoryColorView.layer.mask = maskLayerTop;