I want to customize the search bar, I mean the white box. Can I do it? Is there some documentation about that? Is there a way to hide the white box, but not the letters. Can
You could change the background of UISearchBar
Customize a UISearchBar background
How to Control UISearchBar Background Color
(UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]) ).defaultTextAttributes = [NSForegroundColorAttributeName: UIColor.white]
Here is some common properties you can change to customize UISearchBar: