KeyboardHandler.swift

//
//  KeyboardHandler.swift
//  te3st1
//
//  Created by Episcopal Academy on 11/25/20.
//  Copyright © 2020 Episcopal Academy. All rights reserved.
//

import Combine
import SwiftUI

final class KeyboardHandler: ObservableObject {
    @Published private(set) var keyboardheight:CGFloat = 0
    
    private var cancellable: AnyCancellable?
    
    private let keyboardWillShow = NotificationCenter.default.publisher(for: UIResponder.keyboardWillShowNotification)
        .compactMap{($0.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect)?.height}
    
    private let keyboardWillHide = NotificationCenter.default.publisher(for: UIResponder.keyboardWillHideNotification)
        .map { _ in CGFloat.zero}
    
    init(){
        cancellable = Publishers.Merge(keyboardWillShow, keyboardWillHide)
            .subscribe(on: DispatchQueue.main)
            .assign(to:\.self.keyboardheight, on: self)
    }
}



========================
content view
=======================

@ObservedObject private var keyboardHandler = KeyboardHandler()

//end of VStack
        .padding(.bottom, keyboardHandler.keyboardheight)
                                 .animation(.easeIn)