hudinwal

#import <SafariServices/SafariServices.h>

- (IBAction)safariButtonTapped:(UIBarButtonItem *)sender {
  SFSafariViewController * safariViewController = NSURL * initialURL = [NSURL URLWithString:@"https://www.google.co.in"];
  [[SFSafariViewController alloc]initWithURL:initialURL];
  safariViewController.navigationItem.title = @"Google";
  safariViewController.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Close" style:UIBarButtonItemStylePlain target:nil action:nil];
  [self.navigationController pushViewController:safariViewController animated:YES];
}

hudinwal

// Create a lazy table view
    lazy var pullDownTableView : UITableView = {
        let pullDownTableView = UITableView(frame:self.view.frame)
        pullDownTableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell_id")
        pullDownTableView.delegate = self
        pullDownTableView.dataSource = self
        pullDownTableView.rowHeight = 80.0
        pullDownTableView.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
        return pullDownTableView
    }()

hudinwal

override func viewDidLoad() {
        super.viewDidLoad()
        
        // Create and add the pull down table view
        self.view.addSubview(pullDownTableView)
        
        //Set background color to contrasting color
        view.backgroundColor = UIColor.darkGrayColor()
        pullDownTableView.backgroundColor = UIColor.clearColor()
        

hudinwal

    var topOffset: CGFloat = 0.0
    private let kTopWindowAspectRatio : CGFloat = 3.0/4.0
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        // Calculate the top offset and set it if not corectly set
        if(topOffset != CGRectGetWidth(pullDownTableView.bounds) * kTopWindowAspectRatio) {
            topOffset = CGRectGetWidth(pullDownTableView.bounds) * kTopWindowAspectRatio
            // Setup table view insets and offsets
            let topInset = CGRectGetHeight(pullDownTableView.bounds)
            pullDownTableView.contentInset = UIEdgeInsetsMake(topInset, 0, 0, 0);

hudinwal

extension ViewController : UIScrollViewDelegate,UITableViewDelegate {
    
    func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
        let yInset = scrollView.contentInset.top
        
        if scrollView.contentOffset.y > -topOffset && targetContentOffset.memory.y < -topOffset {
            targetContentOffset.memory.y = scrollView.contentOffset.y
            scrollView.setContentOffset(CGPointMake(0, -topOffset), animated: true)
        }
        else if  -topOffset > targetContentOffset.memory.y   && targetContentOffset.memory.y > (-topOffset + (topOffset - yInset)/2) {

hudinwal

// Custom table view class so not to handle touches that cannot be handled by the content view.
class TableView: UITableView {
    override func hitTest(point: CGPoint, withEvent event: UIEvent?) -> UIView? {
        return subviews.first?.hitTest(point, withEvent: event)
    }
}

hudinwal

    private(set) lazy var swipeDownGesture: UISwipeGestureRecognizer = {
        let swipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.handleSwipeGestures(_:)))
        swipeGesture.direction = .Down
        return swipeGesture
    }()
    private(set) lazy var swipeUpGesture: UISwipeGestureRecognizer = {
        let swipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.handleSwipeGestures(_:)))
        swipeGesture.direction = .Up
        return swipeGesture
    }()

hudinwal

//
//  ViewController.swift
//  PullDownSample
//
//  Created by Dinesh Kumar on 15/08/16.
//  Copyright © 2016 Organization. All rights reserved.
//

import UIKit

hudinwal

    lazy var moveableImageView: UIImageView = {
        let imageView = UIImageView(frame: self.view.frame)
        imageView.contentMode = .ScaleAspectFit
        imageView.image = UIImage(named: "Image")
        imageView.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
        return imageView
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()

hudinwal

    var topOffset: CGFloat = 0.0
    private let kTopWindowAspectRatio : CGFloat = 3.0/4.0
    
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        // Calculate the top offset and set it if not corectly set
        if(topOffset != CGRectGetWidth(pullDownTableView.bounds) * kTopWindowAspectRatio) {
            topOffset = CGRectGetWidth(pullDownTableView.bounds) * kTopWindowAspectRatio
            // Setup table view insets and offsets
            let topInset = CGRectGetHeight(pullDownTableView.bounds)