네비게이션바 투명 처리

방법1 : 

self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.isTranslucent = true
self.navigationController?.view.backgroundColor = .clear

 

방법2 :

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    // Sets background to a blank/empty image
    UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .default)
    // Sets shadow (line below the bar) to a blank image
    UINavigationBar.appearance().shadowImage = UIImage()
    // Sets the translucent background color
    UINavigationBar.appearance().backgroundColor = .clear
    // Set translucent. (Default value is already true, so this can be removed if desired.)
    UINavigationBar.appearance().isTranslucent = true
    return true
}

 

방법3 : 

extension UINavigationBar {
    func transparentNavigationBar() {
    self.setBackgroundImage(UIImage(), for: .default)
    self.shadowImage = UIImage()
    self.isTranslucent = true
    }
}

 

방법4 :

let navBarAppearance = UINavigationBar.appearance()
let colorImage = UIImage.imageFromColor(UIColor.morselPink(), frame: CGRectMake(0, 0, 340, 64))
navBarAppearance.setBackgroundImage(colorImage, forBarMetrics: .Default)


imageFromColor(color: UIColor, frame: CGRect) -> UIImage {
  UIGraphicsBeginImageContextWithOptions(frame.size, false, 0)
  color.setFill()
  UIRectFill(frame)
  let image = UIGraphicsGetImageFromCurrentImageContext()
  UIGraphicsEndImageContext()
  return image
}

 

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