Question

我希望在用户收到通知时切换App Delegate中的根视图。现在，我的工作，但时机已关闭。一旦我生成通知并安排它，观察者就会触发其Selector方法，过早地更改布尔值。通知将在未来启动20秒。

我使用名为StatusOverseer的单身来指导通知并查看切换。我把它放在init()：

中

// Notification Observation
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "bankDidApprove", name: "bankApproval", object: nil)
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "bankDidNotApprove", name: "bankNoApproval", object: nil)

这是StatusOverseer生成通知的方法：

func generateNotification(isGood: Bool) {
        if !setNotification && userDidFinishApplication {

            let currentTime = NSDate()
            let fireTime = NSDate(timeInterval: 20.0, sinceDate: currentTime)
            var notification = UILocalNotification()

            if isGood {
                notification.alertBody = "Congratulations! You've been approved!"
                notificationWasGood = true

                NSNotificationCenter.defaultCenter().postNotificationName("bankApproval", object: nil)
            }
            else {
                notification.alertBody = "Bank Status is available"
                notificationWasGood = false

                NSNotificationCenter.defaultCenter().postNotificationName("bankNoApproval", object: nil)
            }

            notification.alertAction = "open"
            notification.fireDate = fireTime
            notification.soundName = UILocalNotificationDefaultSoundName

            UIApplication.sharedApplication().scheduleLocalNotification(notification)

            setNotification = true
            println("Notification Set")
        }
    }

选择器方法：

func bankDidApprove() {
        println("Banks approved")

        banksDidRespond = true
        notificationWasGood = true
    }

    func bankDidNotApprove() {
        println("Banks no approved")

        banksDidRespond = true
        notificationWasGood = false
    }

我在applicationWillEnterForeground：

中有这个

var so = StatusOverseer.sharedOverseer

        // Decide whether or not to present the waiting view
        if so.userDidFinishApplication && !StatusOverseer.sharedOverseer.banksDidRespond {
            let sb = UIStoryboard(name: "Main", bundle: nil)
            let vc = sb.instantiateViewControllerWithIdentifier("submitWaiting") as! UIViewController

            UIApplication.sharedApplication().keyWindow?.rootViewController = vc
        }
        else if so.banksDidRespond {
            let sb = UIStoryboard(name: "Main", bundle: nil)

            if so.notificationWasGood {
                let vc = sb.instantiateViewControllerWithIdentifier("approved") as! UIViewController
                UIApplication.sharedApplication().keyWindow?.rootViewController = vc
            }
            else {
                let vc = sb.instantiateViewControllerWithIdentifier("notApproved") as! UIViewController
                UIApplication.sharedApplication().keyWindow?.rootViewController = vc
            }
        }
        else if so.userDidAcceptTerms {
            let sb = UIStoryboard(name: "Main", bundle: nil)
            let vc = sb.instantiateViewControllerWithIdentifier("LicenseView") as! UIViewController

            UIApplication.sharedApplication().keyWindow?.rootViewController = vc
        }

那么我应该采取更好的方式吗？谢谢！

收到通知后执行操作？

0 个答案: