SwiftUI工具（一）—— SwiftUI自定义获取屏幕宽高、

SwiftUI自定义获取ScreenWidth 、ScreenHeight、StatusBarHeight、NavigationBarHeight、TabBarHeight、BottomSafeHeight的快捷方法

//
//  LKLayout.swift
//  LKSwiftUIGradient
//
//  Created by 李棒棒 on 2023/12/19.
//

import SwiftUI

struct LKLayout {
    /// 屏幕高
    public static let screen_h = UIScreen.main.bounds.height
    /// 屏幕宽
    public static let screen_w = UIScreen.main.bounds.width
   
    ///导航状态栏高度
    public static let statusBar_height = LKLayout().NAV_STATUSBAR_HEIGHT()
    ///底部导航菜单的指示条高度（屏幕底部安全距离）
    public static let bottomSafe_height = LKLayout().TABBAR_INDICATOR_HEIGHT()
    
    /// 导航栏内容高度
    public static let navBarContent_height = 44.0
    ///导航栏整体高度 状态栏高 + 导航栏内容高
    public static let navBar_height = (statusBar_height + navBarContent_height)
    ///底部导航菜单高度 内容高 + 底部指示条高度
    public static let tabBar_height = (49.0 + bottomSafe_height)
    
    //状态栏高度
    private func NAV_STATUSBAR_HEIGHT() -> CGFloat {
        if #available(iOS 13.0, *) {
            return lkWindow()?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
        } else {
            return UIApplication.shared.statusBarFrame.height
        }
    }
    
    //底部指示条
    private func TABBAR_INDICATOR_HEIGHT() -> CGFloat {
        if #available(iOS 11.0, *) {
               return lkWindow()?.safeAreaInsets.bottom ?? 0
           } else {
               return 0
           }
    }
    
    //获取window
    private func lkWindow() -> UIWindow? {
        if #available(iOS 13.0, *) {
            let winScene = UIApplication.shared.connectedScenes.first as? UIWindowScene
            return winScene?.windows.first
        } else {
            return UIApplication.shared.delegate?.window ?? UIApplication.shared.keyWindow
        }
    }
    
}

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