How To Chanage Navigation bar Color in Swift Ios 

=> This code changes the NavigationBar color 
 
navigationController.navigationBar.barTintColor = UIColor.greenColor()
 
=> Navigation Bar Text:
 navigationController.navigationBar.titleTextAttributes = 
 [UITextAttributeTextColor: UIColor.orangeColor()]
 
 
 => Tab Bar Color:--
 
tabBarController.tabBar.tintColor = UIColor.yellowColor() 
 


=> Change Bar Button Item:-


  UIBarButtonItem.appearance().setTitleTextAttributes 
 ([NSForegroundColorAttributeName: color, NSFontAttributeName: buttonFont], 
 forState: UIControlState.Normal)

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