> gem install cocoapods
> pod setup

> pod init

target ‘YourProject’ do
use_frameworks!

pod “PagingKit” # add

target ‘YourProject’ do
inherit! :search_paths
end

target ‘YourProject’ do
inherit! :search_paths
end

end

> pod install

> ruby -e “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)”
> brew update
> brew install carthage

> touch Cartfile

github “kazuhiro4949/PagingKit”

> carthage update –platform iOS

/usr/local/bin/carthage copy-frameworks

$(SRCROOT)/Carthage/Build/iOS/PagingKit.framework

import PagingKit

class ViewController: UIViewController {

var menuViewController: PagingMenuViewController!
var contentViewController: PagingContentViewController!

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let vc = segue.destination as? PagingMenuViewController {
menuViewController = vc
} else if let vc = segue.destination as? PagingContentViewController {
contentViewController = vc
}
}

import UIKit
import PagingKit

class MenuCell: PagingMenuViewCell {
@IBOutlet weak var titleLabel: UILabel!
}

class ViewController: UIViewController {

var menuViewController: PagingMenuViewController!
var contentViewController: PagingContentViewController!

override func viewDidLoad() {
super.viewDidLoad()

menuViewController.register(nib: UINib(nibName: “MenuCell”, bundle: nil), forCellWithReuseIdentifier: “MenuCell”)
menuViewController.registerFocusView(nib: UINib(nibName: “FocusView”, bundle: nil))
}

class ViewController: UIViewController {
static var viewController: (UIColor) -> UIViewController = { (color) in
let vc = UIViewController()
vc.view.backgroundColor = color
return vc
}

var dataSource = [(menuTitle: “test1”, vc: viewController(.red)), (menuTitle: “test2”, vc: viewController(.blue)), (menuTitle: “test3”, vc: viewController(.yellow))]

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let vc = segue.destination as? PagingMenuViewController {
menuViewController = vc
menuViewController.dataSource = self // <- set menu data source
} else if let vc = segue.destination as? PagingContentViewController {
contentViewController = vc
}
}
}

extension ViewController: PagingMenuViewControllerDataSource {
func numberOfItemsForMenuViewController(viewController: PagingMenuViewController) -> Int {
return dataSource.count
}

func menuViewController(viewController: PagingMenuViewController, widthForItemAt index: Int) -> CGFloat {
return 100
}

func menuViewController(viewController: PagingMenuViewController, cellForItemAt index: Int) -> PagingMenuViewCell {
let cell = viewController.dequeueReusableCell(withReuseIdentifier: “MenuCell”, for: index) as! MenuCell
cell.titleLabel.text = dataSource[index].menuTitle
return cell
}
}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let vc = segue.destination as? PagingMenuViewController {
menuViewController = vc
menuViewController.dataSource = self
} else if let vc = segue.destination as? PagingContentViewController {
contentViewController = vc
contentViewController.dataSource = self // <- set content data source
}
}
}

extension ViewController: PagingContentViewControllerDataSource {
func numberOfItemsForContentViewController(viewController: PagingContentViewController) -> Int {
return dataSource.count
}

func contentViewController(viewController: PagingContentViewController, viewControllerAt index: Int) -> UIViewController {
return dataSource[index].vc
}
}

override func viewDidLoad() {
super.viewDidLoad()
//…
//…
menuViewController.reloadData()
contentViewController.reloadData()
}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let vc = segue.destination as? PagingMenuViewController {
menuViewController = vc
menuViewController.dataSource = self
menuViewController.delegate = self // <- set menu delegate
} else if let vc = segue.destination as? PagingContentViewController {
contentViewController = vc
contentViewController.dataSource = self
}
}
}

extension ViewController: PagingMenuViewControllerDelegate {
func menuViewController(viewController: PagingMenuViewController, didSelect page: Int, previousPage: Int) {
contentViewController.scroll(to: page, animated: true)
}
}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let vc = segue.destination as? PagingMenuViewController {
menuViewController = vc
menuViewController.dataSource = self
menuViewController.delegate = self
} else if let vc = segue.destination as? PagingContentViewController {
contentViewController = vc
contentViewController.dataSource = self
contentViewController.delegate = self // <- set content delegate
}
}
}

extension ViewController: PagingContentViewControllerDelegate {
func contentViewController(viewController: PagingContentViewController, didManualScrollOn index: Int, percent: CGFloat) {
menuViewController.scroll(index: index, percent: percent, animated: false)
}
}

let items = PublishSubject<[(menu: String, width: CGFloat, content: UIViewController)]>()

override func viewDidLoad() {
super.viewDidLoad()

menuViewController?.register(type: TitleLabelMenuViewCell.self, forCellWithReuseIdentifier: “identifier”)
menuViewController?.registerFocusView(view: UnderlineFocusView())

// PagingMenuViewControllerDataSource
items.asObserver()
.map { items in items.map({ ($0.menu, $0.width) }) }
.bind(to: menuViewController.rx.items(
cellIdentifier: “identifier”,
cellType: TitleLabelMenuViewCell.self)
) { _, model, cell in
cell.titleLabel.text = model
}
.disposed(by: disposeBug)

// PagingContentViewControllerDataSource
items.asObserver()
.map { items in items.map({ $0.content }) }
.bind(to: contentViewController.rx.viewControllers())
.disposed(by: disposeBug)

// PagingMenuViewControllerDelegate
menuViewController.rx.itemSelected.asObservable().subscribe(onNext: { [weak self] (page, prev) in
self?.contentViewController.scroll(to: page, animated: true)
}).disposed(by: disposeBug)

// PagingContentViewControllerDelegate
contentViewController.rx.didManualScroll.asObservable().subscribe(onNext: { [weak self] (index, percent) in
self?.menuViewController.scroll(index: index, percent: percent, animated: false)
}).disposed(by: disposeBug)
}