快速清理如何将数据传递回viewController答案

【问题标题】：Clean swift how to pass data back to viewController快速清理如何将数据传递回viewController
【发布时间】：2018-02-06 09:08:10
【问题描述】：

class ListBillPaymentFavoriteRouter: NSObject, ListBillPaymentFavoriteRoutingLogic, ListBillPaymentFavoriteDataPassing {
    weak var viewController: ListBillPaymentFavoriteViewController?
    var dataStore: ListBillPaymentFavoriteDataStore?

    // MARK: Routing

    func routeToBillPaymentInput() {
        let destinationVC = BillPaymentInputViewController.instantiate()
        var destinationDS =  destinationVC.router!.dataStore!
        passDataToBillPaymentInput(source: dataStore!, destination: &destinationDS)
        navigationToBillPaymentInput(source: viewController!, destination: destinationVC)
    }

    // MARK: Navigation

    func navigationToBillPaymentInput(source: ListBillPaymentFavoriteViewController, destination: BillPaymentInputViewController) {
        source.navigationController?.pop_FromLeftMoveToRight()
    }

    // MARK: Passing data

    func passDataToBillPaymentInput(source: ListBillPaymentFavoriteDataStore, destination: inout BillPaymentInputDataStore) {
        destination.testTest = "Yessssss"
    }


}

当我弹出到导航控制器时，我无法接收数据

【问题讨论】：

使用delegation或Notification
如果我不想使用委托，我应该这样做吗？
@PuChaisirikul 这是 iOS 使用委托的常用方式。但是你可以使用回调来代替它们
使用 swift Closure 传回数据
Passing Data between View Controllers的可能重复

标签： swift swift3

【解决方案1】：

我们应该可以viewController，例子

func routeToBillPaymentInput() {
    let index = viewController!.navigationController!.viewControllers.count - 2
    let destinationVC = viewController?.navigationController?.viewControllers[index] as! BillPaymentInputViewController
    var destinationDS =  destinationVC.router!.dataStore!
    passDataToBillPaymentInput(source: dataStore!, destination: &destinationDS)
    navigationToBillPaymentInput(source: viewController!, destination: destinationVC)
}

【讨论】：

【解决方案2】：

完全

class ListBillPaymentFavoriteRouter: NSObject, ListBillPaymentFavoriteRoutingLogic, ListBillPaymentFavoriteDataPassing {
weak var viewController: ListBillPaymentFavoriteViewController?
var dataStore: ListBillPaymentFavoriteDataStore?

// MARK: Routing

func routeToBillPaymentInput() {
    let index = viewController!.navigationController!.viewControllers.count - 2
    let destinationVC = viewController?.navigationController?.viewControllers[index] as! BillPaymentInputViewController
    var destinationDS =  destinationVC.router!.dataStore!
    passDataToBillPaymentInput(source: dataStore!, destination: &destinationDS)
    navigationToBillPaymentInput(source: viewController!, destination: destinationVC)
}

// MARK: Navigation

func navigationToBillPaymentInput(source: ListBillPaymentFavoriteViewController, destination: BillPaymentInputViewController) {
    source.navigationController?.popViewController(animated: true)
}

// MARK: Passing data

func passDataToBillPaymentInput(source: ListBillPaymentFavoriteDataStore, destination: inout BillPaymentInputDataStore) {
    destination.testTest = "Yessssss"

}

}

【讨论】：