public func safeAreaFrame(_ viewController:UIViewController) -> CGRect {
let isIphoneX = UIScreen.main.bounds.height >= 812 ? true : false
var navigationBarHeight:CGFloat = isIphoneX ? 44 : 20
var tabBarHeight:CGFloat = isIphoneX ? 34 : 0
//標誌導航視圖控制器是否存在 默認不存在
//爲什麼需要這個?
//這裏有個坑,當沒有導航欄時,如果是iPhoneX等設備,tabBar.frame.height = 49 會不包含底部返回條的高度(34), 存在導航欄時 tabBar.frame.height = 83
var noNavigationExists = true
if let navigation = viewController.navigationController {
noNavigationExists = false
navigationBarHeight = navigationBarHeight + CGFloat(navigation.navigationBar.frame.height)
}
if let tabBarController = viewController.tabBarController {
tabBarHeight = noNavigationExists ? tabBarHeight : 0
tabBarHeight = tabBarHeight + CGFloat(tabBarController.tabBar.frame.height)
}
let frame = CGRect(x: 0, y: navigationBarHeight, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height - tabBarHeight - navigationBarHeight)
return frame
}
使用
override func viewDidLoad() {
super.viewDidLoad()
let view = UIView(frame: safeAreaFrame(self))
view.backgroundColor = UIColor.red
self.view.addSubview(view)
}
效果: