UIViewController+SafeAnchor

UIViewController+SafeAnchor.swift

import UIKit

public extension UIViewController {
    public var safeTopAnchor: NSLayoutYAxisAnchor {
        if #available(iOS 11, *) {
            return view.safeAreaLayoutGuide.topAnchor
        } else {
            return topLayoutGuide.bottomAnchor
        }
    }
    public var safeBottomAnchor: NSLayoutYAxisAnchor {
        if #available(iOS 11, *) {
            return view.safeAreaLayoutGuide.bottomAnchor
        } else {
            return bottomLayoutGuide.topAnchor
        }
    }
    public var safeLeadingAnchor: NSLayoutXAxisAnchor {
        if #available(iOS 11, *) {
            return view.safeAreaLayoutGuide.leadingAnchor
        } else {
            return view.leadingAnchor
        }
    }
    public var safeTrailingAnchor: NSLayoutXAxisAnchor {
        if #available(iOS 11, *) {
            return view.safeAreaLayoutGuide.trailingAnchor
        } else {
            return view.trailingAnchor
        }
    }
}