DecomposingViewControllersAnimations_OriginalCode

DecomposingViewControllersAnimations_OriginalCode.swift

//  Created by Vladyslav Semenchenko on 09/04/2017.
//  Copyright © 2017 Vladyslav Semenchenko. All rights reserved.

import UIKit

class InitialViewController: EZViewController {

    // MARK: - Variables
    @IBOutlet weak var controlsContainer: UIView!

    // MARK: - Constraints
    @IBOutlet weak var ivLogoHorizontalConstraint: NSLayoutConstraint!
    
    // MARK: - ViewController Life Circle
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
    
    override func viewDidAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.checkUser()
    }
    
    // - MARK: - User interactions
    @IBAction func registrationButtonPressed(_ sender: Any) {
        self.navigationController?.pushViewController(R.storyboard.unboarding.registrationViewController()!, animated: true)
    }
    
    @IBAction func loginButtonPressed(_ sender: Any) {
        self.navigationController?.pushViewController(R.storyboard.unboarding.loginViewController()!, animated: true)
    }
    
    // MARK: - Private
    func checkUser() {
        // some code here and then
        self.animateToLoginPresentation()
    }
    
    // MARK: - Animations
    func animateToLoginPresentation() {
        self.ivLogoHorizontalConstraint.constant = -150
        UIView.animate(withDuration: 0.7, delay: 0.5, options: .curveEaseInOut, animations: {
            self.view.layoutIfNeeded()
        }) { _ in }
        
        UIView.animate(withDuration: 0.3, delay: 1.0, options: .curveLinear, animations: { 
            self.controlsContainer.alpha = 1.0
        }) { _ in }
    }
}