FormViewController.swift

//
//  FormViewController.swift
//  NMG.CRM
//
//  Created by soyombo bat-erdene on 4/6/18.
//  Copyright © 2018 soyombo bat-erdene. All rights reserved.
//

import UIKit

class FormViewController: UIViewController {

    let scrollView = UIScrollView()
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
        
        
        scrollView.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
        scrollView.contentSize = CGSize(width: view.frame.width, height: view.frame.height)
        view.addSubview(scrollView)
        
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    
    deinit{
        NotificationCenter.default.removeObserver(self)
    }
    
    
    @objc func dismissKeyboard(){
        self.view.endEditing(true)
    }
    
    @objc func keyboardWillShow(notification: NSNotification) {
        if let keyboardSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
            let contentInsets = UIEdgeInsets(top: 0, left: 0, bottom: keyboardSize.height, right: 0)
            scrollView.contentInset = contentInsets
        }
        
    }
    
    @objc func keyboardWillHide(notification: NSNotification) {
        let contentInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
        scrollView.contentInset = contentInsets
    }
    
}