TransitionManager 0.3

TransitionManager 0.3

×

TestsTested ✗
LangLanguage SwiftSwift
License MIT
ReleasedLast Release Oct 2018
SPMSupports SPM ✗

Maintained by Cem Olcay.

TransitionManager 0.3

TransitionManager

Painless custom transitioning. Easy extend, easy setup, just focus on animations.

Installation

CocoaPods

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

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

To get the full benefits import TransitionManager wherever you import UIKit

import UIKit
import TransitionManager

Manually

  1. Download and drop /TransitionManagerfolder in your project.
  2. Congratulations!

Usage

Copy & paste TransitionManager.swift into your project.

  • Declare a TransitionManager object.
  • Init it with a TransitionManagerAnimation
  • Assign it as your navigation controller's delegate if you use navigation controller.
  • Else assign it as your view controller's transitioningDelegate.
	
	var transition: TransitionManager!
	    
	override func viewDidLoad() {
	   super.viewDidLoad()
	   
	   transition = TransitionManager (transitionAnimation: FadeTransitionAnimation())
	   navigationController?.delegate = transition
	}

Creating Transition Animations

Create a subclass of TransitionManagerAnimation

	class FadeTransitionAnimation: TransitionManagerAnimation {

	}

TransitionManagerAnimation class implements TransitionManagerDelegate protocol.

TransitionManagerDelegate 
protocol TransitionManagerDelegate {

    /// Transition nimation method implementation
    func transition(
        container: UIView,
        fromViewController: UIViewController,
        toViewController: UIViewController,
        isDismissing: Bool,
        duration: NSTimeInterval,
        completion: () -> Void)

    /// Interactive transitions,
    /// update percent in gesture handler
    var interactionTransitionController: UIPercentDrivenInteractiveTransition? { get set }
}

For transition animation, we should override transition func and write our custom animation in it.

class FadeTransitionAnimation: TransitionManagerAnimation {
    override func transition(
        container: UIView,
        fromViewController: UIViewController,
        toViewController: UIViewController,
        isDismissing: Bool,
        duration: NSTimeInterval,
        completion: () -> Void) {
        if isDismissing {
            closeAnimation(container,
                fromViewController: fromViewController,
                toViewController: toViewController,
                duration: duration,
                completion: completion)
        } else {
            openAnimation(container,
                fromViewController: fromViewController,
                toViewController: toViewController,
                duration: duration,
                completion: completion)
        }
    }    
}

One important part is completion() must be called because the TransitionManager finishes transition after it gets called.

Interaction Transition

Interaction transition has 3 parts:

  • Init interactionTransitionController and either pop or push navigation controller when gesture (interaction) starts.
  • Calculate your percents on gesture change and updateInteractiveTransition: with that percent
  • When gesture ended, decide if your transition complete or not and give information to your interactionTransitionController with finishInteractiveTransition () and cancelInteractiveTransition ()

Easier TransitionManager setup

You can create a TransitionManagerAnimation container enum and give it all your animations

	enum TransitionManagerAnimations {
	    case Fade
	    case Pull
	}

Write a func that returns correct transition animation in enum

enum TransitionManagerAnimations {
    case Fade
    case Pull
    
    func transitionAnimation () -> TransitionManagerAnimation {
        switch self {
        case .Fade:
            return FadeTransitionAnimation()
        case .Pull:
            return PullTransitionAnimation()
        }
    }
}

Extend TransitionManager and write a new init method like

extension TransitionManager {
    convenience init(transition: TransitionManagerAnimations) {
        self.init(transitionAnimation: transition.transitionAnimation())
    }
}

Now you can create TransitionManager in your view controller like

transition = TransitionManager(transition: .Pull)
navigationController?.delegate = transition