IQKeyboardManager/Demo/Swift_Demo/ViewController/RefreshLayoutViewController.swift

//
//  RefreshLayoutViewController.swift
//  Demo
//
//  Created by IEMacBook01 on 23/05/16.
//  Copyright © 2016 Iftekhar. All rights reserved.
//

import UIKit
import IQKeyboardManagerSwift

class RefreshLayoutViewController: UIViewController {

    @IBOutlet var textViewHeightConstraint: NSLayoutConstraint!

    @IBAction func stepperChanged (_ sender: UIStepper) {

        #if swift(>=4.2)
        let finalCurve = UIView.AnimationOptions.beginFromCurrentState.union(.init(rawValue: 7))
        #else
        let finalCurve = UIViewAnimationOptions.beginFromCurrentState.union(.init(rawValue: 7))
        #endif

        let animationDuration: TimeInterval = 0.3

        UIView.animate(withDuration: animationDuration, delay: 0, options: finalCurve, animations: { () -> Void in

            self.textViewHeightConstraint.constant = CGFloat(sender.value)

            self.view.setNeedsLayout()
            self.view.layoutIfNeeded()
        }) { (_: Bool) -> Void in}
    }

    @IBAction func reloadLayoutAction (_ sender: UIButton) {
        IQKeyboardManager.shared.reloadLayoutIfNeeded()
    }
}