iOS - Swift( iOS15)导航栏适配

【Swift】 iOS15导航栏适配

原理就不多说了，直接参考之前写的Object-C版本适配就可以

Object-C版本导航栏适配参考本篇 →

直接对UINavigationController扩展设置navBarStyle的方法便于调用

上才艺

enum NavigationBarStyle {
    ///navbar APP主题
    case theme
    ///navbar 透明
    case clear
    ///navbar 白色的
    case white
}

extension UINavigationController {

func navBarStyle(_ style:NavigationBarStyle) {
        switch style {
        case .theme:
            navigationBar.barStyle = .black
            let attrDic = [NSAttributedString.Key.foregroundColor:UIColor.black,
                                                 NSAttributedString.Key.font:UIFont.systemFont(ofSize: 18.0)]
            if #available(iOS 13.0, *) {
                let barApp = UINavigationBarAppearance()
                barApp.backgroundColor = .white
                //基于backgroundColor或backgroundImage的磨砂效果
                barApp.backgroundEffect = nil
                //阴影颜色（底部分割线），当shadowImage为nil时，直接使用此颜色为阴影色。如果此属性为nil或clearColor（需要显式设置），则不显示阴影。
                //barApp.shadowColor = nil;
                //标题文字颜色
                barApp.titleTextAttributes = attrDic
                navigationBar.scrollEdgeAppearance = barApp
                navigationBar.standardAppearance = barApp
            }else {
                navigationBar.titleTextAttributes = attrDic
                
                let navBgImg = UIImage(named: "nav_bg")!.withRenderingMode(.alwaysOriginal)
                
                navigationBar.shadowImage = UIImage()
                navigationBar.setBackgroundImage(navBgImg, for: .default)
            }
            //透明设置
            navigationBar.isTranslucent = false;
            //navigationItem控件的颜色
            navigationBar.tintColor = .white
            
        case .clear:
            navigationBar.barStyle = .black
            let attrDic = [NSAttributedString.Key.foregroundColor: UIColor.white,
                           NSAttributedString.Key.font: UIFont.systemFont(ofSize: 18)]
            
            if #available(iOS 13.0, *) {
                let barApp = UINavigationBarAppearance()
                barApp.backgroundColor = .clear
                //基于backgroundColor或backgroundImage的磨砂效果
                barApp.backgroundEffect = nil
                //阴影颜色（底部分割线），当shadowImage为nil时，直接使用此颜色为阴影色。如果此属性为nil或clearColor（需要显式设置），则不显示阴影。
                //barApp.shadowColor = nil;
                //标题文字颜色
                barApp.titleTextAttributes = attrDic
                navigationBar.scrollEdgeAppearance = nil
                navigationBar.standardAppearance = barApp
            }else {
                navigationBar.titleTextAttributes = attrDic
                navigationBar.shadowImage = UIImage()
                let navBgImg = UIImage.imgColor(UIColor.clear, CGSize(width: SCREEN_WIDTH, height: kNav_Height)).withRenderingMode(.alwaysOriginal)
                
                navigationBar.setBackgroundImage(navBgImg, for: .default)
            }
            //透明设置
            navigationBar.isTranslucent = true;
            //navigationItem控件的颜色
            //navigationBar.tintColor = .white
            
        case .white:
            
            navigationBar.barStyle = .default
            let attrDic = [NSAttributedString.Key.foregroundColor: UIColor.black,
                           NSAttributedString.Key.font: UIFont.systemFont(ofSize: 18)]
 
            if #available(iOS 13.0, *) {
                let barApp = UINavigationBarAppearance()
                barApp.backgroundColor = .white
                //基于backgroundColor或backgroundImage的磨砂效果
                barApp.backgroundEffect = nil
                //阴影颜色（底部分割线），当shadowImage为nil时，直接使用此颜色为阴影色。如果此属性为nil或clearColor（需要显式设置），则不显示阴影。
                //barApp.shadowColor = nil;
                //标题文字颜色
                barApp.titleTextAttributes = attrDic
                navigationBar.scrollEdgeAppearance = barApp
                navigationBar.standardAppearance = barApp
            }else {
                navigationBar.titleTextAttributes = attrDic
                
                let navBgImg = UIImage.imgColor(UIColor.white, CGSize(width: SCREEN_WIDTH, height: kNav_Height)).withRenderingMode(.alwaysOriginal)
                
                navigationBar.shadowImage = UIImage()
                navigationBar.setBackgroundImage(navBgImg, for: .default)
            }
            //透明设置
            navigationBar.isTranslucent = false;
            //navigationItem控件的颜色
            navigationBar.tintColor = .black
        }
    }
}

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