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INTRODUCING APPLICATION COORDINATOR ANDREY PANOV /panovdev /andreypanov [email protected]

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PRESENTATION.START() ▸ navigation flow in the apps ▸ usual way ▸ changes… ▸ coordinators ▸ new way ▸ tips&tricks

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FLOW…

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AUTH FLOW AuthController SignUpController TermsController PhoneListController AddPhoneController VerifyPhoneController Complete Request Finish

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didSelectRowAtIndexPath: func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { if { router.openControllerA() } else if { router.openControllerB() } else if { router.openControllerC() } else if { router.openControllerD() } }

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Controller A Controller B Controller C Send [String:AnyObject] String [Options] [String:AnyObject] [String:AnyObject] String

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prepareForSegue: override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) { if segue.identifier == "openControllerA"{ let vc = segue.destinationViewController as! ControllerA vc.monkey = } else if segue.identifier == "openControllerB"{ let vc = segue.destinationViewController as! ControllerB vc.tiger = } else if segue.identifier == "openControllerC"{ let vc = segue.destinationViewController as! ControllerC vc.frog = } else if segue.identifier == "openControllerD"{ let vc = segue.destinationViewController as! ControllerD vc.snake = } }

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SIGNUP&AUTH FLOW (SERVICES)

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COORDINATOR?.START() ▸ hard to reuse ▸ every controller knows about other controllers ▸ hard to change flow ▸ hard to test

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COORDINATORS

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«So what is a coordinator? A coordinator is an object that bosses view controllers around. Taking all of the driving logic out of your view controllers, and moving that stuff one layer up is gonna make your life a lot more awesome.» –Soroush Khanlou

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AUTH FLOW AuthController SignUpController TermsController AuthCoordinator Output Output Output Output Input

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PHONE FLOW PhoneListController AddPhoneController VerifyPhoneController PhoneCoordinator Output Output Output Output Input

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OUTPUT PROTOCOL // controller output protocol PhoneListOutput { var selectPhone: (Phone -> ())? { get set } var onVerifyPhone: (Bool -> ())? { get set } } // coordinator output protocol PhoneCoordinatorOutput { var finishFlow: (Phone? -> ())? { get set } }

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INPUT PROTOCOL // controller output protocol SignUpFlowInput { func conformTermsAgreement(agree: Bool) }

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onFinish() AuthFlow PhoneFlow start()

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Controller A Controller B Controller C Send [String: AnyObject] String Coordinator String [String:AnyObject] Storage

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CONSISTS OF…

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Coordinator Storage Router CoordinatorsFactory ControllersFactory

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DEMO.RUN()

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HOW TO INTEGRATE?

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COORDINATORS IN PROJECT AuthCoordinator ItemsCoordinator CreateItemCoordinator SettingsCoordinator

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COORDINATOR.FINISH() ▸ controllers know nothing about other controllers ▸ controllers can be easy integrated in different flows ▸ controllers don’t send data to the others ▸ easy to reuse ▸ simplified testing

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APPLICATION COORDINATOR PROJECT /AndreyPanov/ApplicationCoordinator

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Swift 3

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LINKS Coordinators Redux http://khanlou.com/2015/10/coordinators-redux/ Flow Controllers on iOS for a Better Navigation Control http://albertodebortoli.com/blog/2014/09/03/flow-controllers- on-ios-for-a-better-navigation-control/ Boundaries In Practice https://speakerdeck.com/ayanonagon/shi-jian-de-boundaries Application Controller http://martinfowler.com/eaaCatalog/applicationController.html

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QUESTIONS?.ASK()