[swift5] How to change the color of TabBar or the color of item of TabBar with code

How to change the color of TabBar


//Change tabbar color
tabBar.barTintColor = UIColor.white

//tabbar background transparency
UITabBar.appearance().backgroundImage = UIImage()

Background transparency means that TabBar has a frosted glass-like color by default, so remove it.

How to change the color of TabBar item


 //tabbar selection color setting
 tabBar.tintColor = UIColor.black
 //Tabbar non-selected color settings
 tabBar.unselectedItemTintColor =  UIColor.gray

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