ihealth_ios/Inhealth/UIViewController+Presentation.swift

//
//  UIViewController+Presentation.swift
//  Inhealth
//
//  Created by weclouds on 2020/1/7.
//  Copyright © 2020 weclouds. All rights reserved.
//

import UIKit

fileprivate struct AssociatedKeys {
    fileprivate static var controllerHeightKey :String = "controllerHeight"
   
}
extension UIViewController:UIViewControllerTransitioningDelegate{
    var controllerHeight : CGFloat?{
        set{
            objc_setAssociatedObject(self, &AssociatedKeys.controllerHeightKey, newValue, .OBJC_ASSOCIATION_ASSIGN)
        }
        get{
           return objc_getAssociatedObject(self, &AssociatedKeys.controllerHeightKey) as? CGFloat
        }
    }
    func modal(_ vc:UIViewController,controllerHeight:CGFloat)  {
        
        vc.modalPresentationStyle = .custom
        vc.controllerHeight = controllerHeight
        
        vc.transitioningDelegate = self
        self.present(vc, animated: true, completion: nil)
    }
    public func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
        return IHPresentBottom(presentedViewController: presented, presenting: presenting)
    }
    
}