how can I remove the top border on UIToolBar

Question

I have set my UIToolBar tint color to some value, and there is this border line that I see in which I want to remove:

Answer 1

[[UIToolbar appearance] setBackgroundImage:[[UIImage alloc] init] forToolbarPosition:UIBarPositionBottom barMetrics:UIBarMetricsDefault];

[[UIToolbar appearance] setShadowImage:[[UIImage alloc] init] forToolbarPosition:UIBarPositionBottom];

[UIToolbar appearance].barTintColor = [UIColor ...];```