paiai_ios/PaiAi/PaiaiUIKit/Reusable/Extension/UIKit/UIViewControllerExt.swift

//
//  UIViewControllerExt.swift
//  ExtensionKit
//
//  Created by FFIB on 2017/9/13.
//  Copyright © 2017年 FFIB. All rights reserved.
//

import UIKit

/// MARK: custom methods extension
public extension UIViewController {
     func addFullScreen(childViewController child: UIViewController) {
        guard child.parent == nil else { return }
        
        addChild(child)
        view.addSubview(child.view)
        child.view.frame = view.bounds
        if #available(iOS 12, *) {
            child.view.translatesAutoresizingMaskIntoConstraints = false
            NSLayoutConstraint.activate([
                child.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
                child.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
                child.view.topAnchor.constraint(equalTo: view.topAnchor),
                child.view.bottomAnchor.constraint(equalTo: view.bottomAnchor)
                ].compactMap {$0})
        }
    
        child.didMove(toParent: self)
    }
    
    func remove(childViewController child: UIViewController) {
        guard child.parent != nil else { return }
        
        child.willMove(toParent: nil)
        child.view.removeFromSuperview()
        child.removeFromParent()
    }
    
    func removeFromParentAndView() {
        view.removeFromSuperview()
        removeFromParent()
    }
}