Swift获取 iPhone 状态栏、导航栏、TabBar高度

iOS 14 系统之后，刘海屏手机的状态栏高度就不再统一是 44 了。下表是 iOS 15.2 上各刘海屏机型的状态栏高度，其中 iPhone 13 系列和 iPhone 12 系列是一致的，就不再重复列举。

机型	状态栏高度
iPhone XR/11	48
iPhone X/11 Pro/ 11 Pro Max/12 mini	44
iPhone 12/12 Pro/Pro Max	47

UIDevice+XPAddition.swift

extension UIDevice {
    
    /// 顶部安全区高度
    static func xp_safeDistanceTop() -> CGFloat {
        if #available(iOS 13.0, *) {
            let scene = UIApplication.shared.connectedScenes.first
            guard let windowScene = scene as? UIWindowScene else { return 0 }
            guard let window = windowScene.windows.first else { return 0 }
            return window.safeAreaInsets.top
        } else if #available(iOS 11.0, *) {
            guard let window = UIApplication.shared.windows.first else { return 0 }
            return window.safeAreaInsets.top
        }
        return 0;
    }
    
    /// 底部安全区高度
    static func xp_safeDistanceBottom() -> CGFloat {
        if #available(iOS 13.0, *) {
            let scene = UIApplication.shared.connectedScenes.first
            guard let windowScene = scene as? UIWindowScene else { return 0 }
            guard let window = windowScene.windows.first else { return 0 }
            return window.safeAreaInsets.bottom
        } else if #available(iOS 11.0, *) {
            guard let window = UIApplication.shared.windows.first else { return 0 }
            return window.safeAreaInsets.bottom
        }
        return 0;
    }
    
    /// 顶部状态栏高度（包括安全区）
    static func xp_statusBarHeight() -> CGFloat {
        var statusBarHeight: CGFloat = 0
        if #available(iOS 13.0, *) {
            let scene = UIApplication.shared.connectedScenes.first
            guard let windowScene = scene as? UIWindowScene else { return 0 }
            guard let statusBarManager = windowScene.statusBarManager else { return 0 }
            statusBarHeight = statusBarManager.statusBarFrame.height
        } else {
            statusBarHeight = UIApplication.shared.statusBarFrame.height
        }
        return statusBarHeight
    }
    
    /// 导航栏高度
    static func xp_navigationBarHeight() -> CGFloat {
        return 44.0
    }
    
    /// 状态栏+导航栏的高度
    static func xp_navigationFullHeight() -> CGFloat {
        return UIDevice.xp_statusBarHeight() + UIDevice.xp_navigationBarHeight()
    }
    
    /// 底部导航栏高度
    static func xp_tabBarHeight() -> CGFloat {
        return 49.0
    }
    
    /// 底部导航栏高度（包括安全区）
    static func xp_tabBarFullHeight() -> CGFloat {
        return UIDevice.xp_tabBarHeight() + UIDevice.xp_safeDistanceBottom()
    }
}