EZSwipeController

:point_up_2: UIPageViewController like Snapchat/Tinder/iOS Main Pages

Code Quality Rank: L4

Programming language: Swift

License: MIT License

Tags: UI    

Latest version: v0.6.1

README

EZSwipeController

Easy to use UIPageViewController to create a view navigation like Snapchat/Tinder/iOS Main Pages.

[Demo](Examplepics/demo.gif)

Manual Install (~10 seconds)

1. Download and drop 'EZSwipeController.swift' in your project.
   
2. Congratulations!

Install via CocoaPods (~10 seconds)

You can use CocoaPods to install EZSwipeController by adding it to your Podfile:

platform :ios, '8.0'
use_frameworks!
pod 'EZSwipeController'

import EZSwipeController

Install via Carthage (~5 seconds)

Carthage is a decentralized dependency manager that automates the process of adding frameworks to your Cocoa application.

You can install Carthage with Homebrew using the following command:

$ brew update
$ brew install carthage

To integrate EZSwipeController into your Xcode project using Carthage, specify it in your Cartfile:

github "goktugyil/EZSwipeController"

Run carthage update.

$ carthage update

Setup

Use with Storyboard

You can also use EZSwipeController via push or present on your UIViewcontrollers like:

presentViewController(EZSwipeController(), animated: true, completion: nil)

Use without Storyboard

If you want to use EZSwipe as root viewcontroller (Your apps starting point):

Go to Targets -> Your Target -> General -> Main Interface -> Delete it

Add this to your AppDelegate:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    window = UIWindow(frame: UIScreen.main.bounds)
    window!.rootViewController = MySwipeVC()
    window!.makeKeyAndVisible()
    return true
}

Usage

Create a subclass of EZSwipeController

import UIKit
// import EZSwipeController // if using CocoaPods
class MySwipeVC: EZSwipeController {
    override func setupView() {
        datasource = self
    }
}

extension MySwipeVC: EZSwipeControllerDataSource {
    func viewControllerData() -> [UIViewController] {
        let redVC = UIViewController()
        redVC.view.backgroundColor = UIColor.red

        let blueVC = UIViewController()
        blueVC.view.backgroundColor = UIColor.blue

        let greenVC = UIViewController()
        greenVC.view.backgroundColor = UIColor.green

        return [redVC, blueVC, greenVC]
    }
}

You should have something like this:

Change Background Color

class MySwipeVC: EZSwipeController {
    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = UIColor.yellowColor()
    }
}

Gives Titles To Pages

extension MySwipeVC: EZSwipeControllerDataSource {   
    func titlesForPages() -> [String] {
        return ["red", "blue", "green"]
    }
}

Starting Page Index

extension MySwipeVC: EZSwipeControllerDataSource {
    func indexOfStartingPage() -> Int {
        return 2 // EZSwipeController starts from 2nd, green page
    }
}

On Changed Page Index

extension MySwipeVC: EZSwipeControllerDataSource {
    func changedToPageIndex(index: Int) {
        // You can do anything from here, for now we'll just print the new index
        print(index)
    }
}

Custom Navigation Bar

Setting up navigationBarDataForPageIndex overrides effects in titlesForPages.

extension MySwipeVC: EZSwipeControllerDataSource {
    func navigationBarDataForPageIndex(index: Int) -> UINavigationBar {
        var title = ""
        if index == 0 {
            title = "Charmander"
        } else if index == 1 {
            title = "Squirtle"
        } else if index == 2 {
            title = "Bulbasaur"
        }

        let navigationBar = UINavigationBar()
        navigationBar.barStyle = UIBarStyle.Default
//        navigationBar.barTintColor = QorumColors.WhiteLight
        print(navigationBar.barTintColor)
        navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.blackColor()]

        let navigationItem = UINavigationItem(title: title)
        navigationItem.hidesBackButton = true

        if index == 0 {
            let rightButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Search, target: self, action: "a")
            rightButtonItem.tintColor = UIColor.blackColor()

            navigationItem.leftBarButtonItem = nil
            navigationItem.rightBarButtonItem = rightButtonItem
        } else if index == 1 {
            let rightButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Bookmarks, target: self, action: "a")
            rightButtonItem.tintColor = UIColor.blackColor()

            let leftButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Camera, target: self, action: "a")
            leftButtonItem.tintColor = UIColor.blackColor()

            navigationItem.leftBarButtonItem = leftButtonItem
            navigationItem.rightBarButtonItem = rightButtonItem
        } else if index == 2 {            
            let leftButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Search, target: self, action: "a")
            leftButtonItem.tintColor = UIColor.blackColor()

            navigationItem.leftBarButtonItem = leftButtonItem
            navigationItem.rightBarButtonItem = nil
        } 
        navigationBar.pushNavigationItem(navigationItem, animated: false)
        return navigationBar
    }
}

You don't need to set actions to buttons, EZSwipeController automatically overrides them and makes them work.

Add Images To Navigation Bar

extension MySwipeVC: EZSwipeControllerDataSource {
    func navigationBarDataForPageIndex(index: Int) -> UINavigationBar {
        var title = ""
        if index == 0 {
            title = "Charmander"
        } else if index == 1 {
            title = "Squirtle"
        } else if index == 2 {
            title = "Bulbasaur"
        }

        let navigationBar = UINavigationBar()
        navigationBar.barStyle = UIBarStyle.Default
        navigationBar.barTintColor = UIColor.purpleColor()
        navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.blackColor()]

        let navigationItem = UINavigationItem(title: title)
        navigationItem.hidesBackButton = true

        if index == 0 {
            var sImage = UIImage(named: "squir")!
            sImage = scaleTo(image: sImage, w: 22, h: 22)
            let rightButtonItem = UIBarButtonItem(image: sImage, style: UIBarButtonItemStyle.Plain, target: self, action: "a")
            rightButtonItem.tintColor = UIColor.blueColor()

            navigationItem.leftBarButtonItem = nil
            navigationItem.rightBarButtonItem = rightButtonItem
        } else if index == 1 {
            var cImage = UIImage(named: "char")!
            cImage = scaleTo(image: cImage, w: 22, h: 22)
            let leftButtonItem = UIBarButtonItem(image: cImage, style: UIBarButtonItemStyle.Plain, target: self, action: "a")
            leftButtonItem.tintColor = UIColor.redColor()

            var bImage = UIImage(named: "bulb")!
            bImage = scaleTo(image: bImage, w: 22, h: 22)
            let rightButtonItem = UIBarButtonItem(image: bImage, style: UIBarButtonItemStyle.Plain, target: self, action: "a")
            rightButtonItem.tintColor = UIColor.greenColor()

            navigationItem.leftBarButtonItem = leftButtonItem
            navigationItem.rightBarButtonItem = rightButtonItem
        } else if index == 2 {
            var sImage = UIImage(named: "squir")!
            sImage = scaleTo(image: sImage, w: 22, h: 22)
            let leftButtonItem = UIBarButtonItem(image: sImage, style: UIBarButtonItemStyle.Plain, target: self, action: "a")
            leftButtonItem.tintColor = UIColor.blueColor()

            navigationItem.leftBarButtonItem = leftButtonItem
            navigationItem.rightBarButtonItem = nil
        }
        navigationBar.pushNavigationItem(navigationItem, animated: false)
        return navigationBar
    }
}

private func scaleTo(image image: UIImage, w: CGFloat, h: CGFloat) -> UIImage {
    let newSize = CGSize(width: w, height: h)
    UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0)
    image.drawInRect(CGRect(x: 0, y: 0, width: newSize.width, height: newSize.height))
    let newImage: UIImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    return newImage
}

Custom Button Settings

Sometimes you may want to add your own actions to buttons, in that case you should disable the default button behaviour:

extension MySwipeVC: EZSwipeControllerDataSource {    
    func disableSwipingForLeftButtonAtPageIndex(index: Int) -> Bool {
        if index == 1 {
            return true
        }
        return false
    }

    func clickedLeftButtonFromPageIndex(index: Int) {
        if index == 1 {
            print("What!?! Squirtle is evolving!!")
        }
    }
}

You can also add your analytics and other stuff in here.

Move Navigation Bar to Bottom

class MySwipeVC: EZSwipeController {
    override func setupView() {
        super.setupView()
        datasource = self
        navigationBarShouldBeOnBottom = true
    }
}

Move To New Page

class MySwipeVC: EZSwipeController {
    override func setupView() {
        super.setupView()
        datasource = self

        self.moveToPage(0)
    }
}

Hide Navigation Bar

class MySwipeVC: EZSwipeController {
    override func setupView() {
        super.setupView()
        navigationBarShouldNotExist = true
    }
}

Extra Settings

override func setupView() {
    cancelStandardButtonEvents()
    // Use this setting if you are using custom button that  
    // has nothing to do with swiping the viewcontroller
}

self.currentVCIndex 
//Use this to get the current page index

Requirements

• Swift 3 or later
• For Swift 2 support use any Version before 0.6

Possible features

• Better documentation with more fancy pictures!
• Completing TODOs inside source files

Communication

• If you need help, use Stack Overflow. (Tag 'ezswipecontroller')
• If you found a bug, open an issue.
• If you have a feature request, open an issue.
• If you want to contribute, submit a pull request.

License

EZSwipeController is available under the MIT license. See the LICENSE file.

Keywords

swift, extension, pageviewcontroller, uipageviewcontroller, tinder, snapchat, navigation