TransitionTreasury is a viewController transition framework in Swift.

You can see https://transitiontreasury.com

Features

• [x] Push & Present & TabBar transition animation
• [x] Easy create transition & extension
• [x] Support completion callback
• [x] Support modal viewController data callback
• [x] Support Custom Transition
• [x] Support Update Status Bar Style
• [x] Support Push & Present & TabBar Gesture.
• [x] Complete Documentation

Migration Guides

• [TransitionTreasury 3.0 Migration Guide](https://github.com/DianQK/TransitionTreasury/blob/master/Documentation/TransitionTreasury 3.0 Migration Guide.md)

Requirements

• iOS 8.0+
• Xcode 10.0+

Communication

• If you need help or found a bug, open an issue.
• If you have a new transition animation or want to contribute, submit a pull request. :]

Installation

CocoaPods

CocoaPods is a dependency manager for Cocoa projects. You can install it with the following command:

$ gem install cocoapods

To integrate TransitionTreasury into your Xcode project using CocoaPods, specify it in your Podfile:

use_frameworks!
pod 'TransitionTreasury', '~> 7.0'

Then, run the following command:

$ pod install

In any file you’d like to use TransitionTreasury in, don’t forget to import the framework with import TransitionTreasury.

For TransitionAnimation extensions, this project will include them as dependencies. You can do this via CocoaPods subspecs.

pod 'TransitionAnimation', '~> 7.0'

### Carthage

$ brew update
$ brew install carthage

github "DianQK/TransitionTreasury"

$ carthage update

/usr/local/bin/carthage copy-frameworks

$(SRCROOT)/Carthage/Build/iOS/TransitionTreasury.framework
$(SRCROOT)/Carthage/Build/iOS/TransitionAnimation.framework // If need

For more information about how to use Carthage, please see its project page.

Usage

You can check out Example or Demo .
Don’t forget pod install for Example .

Make a Push

If we need to push FirstViewController to SecondViewController, SecondViewController should conform NavgationTransitionable, and add code var tr_pushTransition: TRNavgationTransitionDelegate?, I need use this property to retain animation object. Of course, you can use this do more, but it is dangerous.

When you need to push, just call public func tr_pushViewController<T : UIViewController where T : NavgationTransitionable>(viewController: T, method: TransitionAnimationable, statusBarStyle: TransitionTreasury.TRStatusBarStyle = default, completion: (() -> Void)? = default), like Apple method. About method parameter, see transitiontreasury.com.

Example：

/// FirstViewController.swift
class FirstViewController: UIViewController {

    func push() {
        let vc = SecondViewController()
        navigationController?.tr_pushViewController(vc, method: TRPushTransitionMethod.fade, completion: {
                print("Push finish")
            })
    }
}

/// SecondViewController.swift
class SecondViewController: UIViewController, NavgationTransitionable {

    var tr_pushTransition: TRNavgationTransitionDelegate?

    func pop() {
        tr_popViewController()
    }
}

When you need to pop, just call public func tr_popViewController(completion: (() -> Void)? = nil) -> UIViewController?.

Make a Present

If we present MainViewController to ModalViewController:

• MainViewController should conform ModalTransitionDelegate, and add var tr_presentTransition: TRViewControllerTransitionDelegate?
• Add weak var modalDelegate: ModalViewControllerDelegate? for ModalViewController.

Example：

/// MainViewController.swift
class MainViewController: UIViewController, ModalTransitionDelegate {

    var tr_presentTransition: TRViewControllerTransitionDelegate?

    func present() {
        let vc = ModalViewController()
        vc.modalDelegate = self // Don't forget to set modalDelegate
        tr_presentViewController(vc, method: TRPresentTransitionMethod.Fade, completion: {
                print("Present finished.")
            })
    }
}

/// ModalViewController.swift
class ModalViewController: UIViewController {

    weak var modalDelegate: ModalViewControllerDelegate?

    func dismiss() {
        modalDelegate?.modalViewControllerDismiss(callbackData: nil)
    }
}

if you need callbackData , your MianViewController should implement :

func modalViewControllerDismiss(interactive interactive: Bool, callbackData data:AnyObject?)

// or

func modalViewControllerDismiss(callbackData data:AnyObject?)

interactive just for interactive dismiss, for more see Advanced Usage.

Note:
If you don’t need callbackData, maybe you haven’t implemented func modalViewControllerDismiss(callbackData data:AnyObject?).
If you don’t want to use ModalTransitionDelegate, you can use ViewControllerTransitionable which only for Animation.
Warning:
You shouldn’t use tr_dismissViewController() in your ModalViewController. Please use delegate. I have implented this, just use modalDelegate?.modalViewControllerDismiss(callbackData: ["data":"back"]). For more, you can read Dismissing a Presented View Controller.

Advanced Usage

Create Your Transition Enum (Recommended!!!)

Maybe like this:

enum DemoTransition {
    case FadePush
    case TwitterPresent
    case SlideTabBar
}

extension DemoTransition: TransitionAnimationable {
    func transitionAnimation() -> TRViewControllerAnimatedTransitioning {
        switch self {
        case .FadePush:
            return FadeTransitionAnimation()
        case .TwitterPresent :
            return TwitterTransitionAnimation()
        case .SlideTabBar :
            return SlideTransitionAnimation()
        }
    }
}

Then you can use your transition, maybe like this:

tr_pushViewController(viewController: viewController, method: DemoTransition.FadePush)
tr_presentViewController(viewControllerToPresent: viewController, method: DemoTransition.TwitterPresent)

Well, you can create your own animation, see Custom Animation.

Custom Animation

Just conform to TRViewControllerAnimatedTransitioning. If you need interactive functionality, conform to TransitionInteractiveable.

About writing your own animation, you can read Animation-Guide, I would be happy if you would share your animation for this project.
Also, check out TransitionTreasury/TransitionAnimation, there are some Animations there. You can write follow this.

Status Bar Style

If you want to update the status bar style, you should add the key View controller-based status bar appearance in your info.plist, and set its value to false.

Then, like in Basic Usage, just add param statusBarStyle:

// Push & Pop
tr_pushViewController(viewController: UIViewController, method: TRPushTransitionMethod.fade, statusBarStyle: UIStatusBarStyle = .Default)    

// Present & Dismiss
tr_presentViewController(viewControllerToPresent: UIViewController, method: TRPresentTransitionMethod.Fade, statusBarStyle: UIStatusBarStyle = .Default)

Interactive Transition Animation

See TransitionTreasuryDemo Scheme:

func interactiveTransition(sender: UIPanGestureRecognizer) {
        switch sender.state {
        case .Began :
            guard sender.translationInView(view).y > 0 else {
                break
            }
            let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("ModalViewController") as! ModalViewController
            vc.modalDelegate = self
            tr_presentViewController(vc, method: TRPresentTransitionMethod.Scanbot(present: sender, dismiss: vc.dismissGestureRecognizer), completion: {
                print("Present finished")
            })
        default : break
        }
    }

Warning:
Make sure you just call tr_presentViewController(_:_:_:) once.

TabBar Transition Animation

Just add this code:

tabBarController.tr_transitionDelegate = TRTabBarTransitionDelegate(method: TRTabBarTransitionDelegate.Slide)

Note:
If you need delegate, please use tr_delegate.

You can see Demo/TabBarDemo.

License

TransitionTreasury is released under the MIT license. See LICENSE for details.