应用程序首次启动时 3D Touch 快速操作不起作用

Question

我在使用 3D Touch 时遇到了一些问题。它运行良好，除非应用程序首次启动。这是我的 AppDelegate 中的以下代码：

 func handleQuickAction(shortcutItem: UIApplicationShortcutItem) -> Bool {
    var quickActionHandled = false
    let type = shortcutItem.type.componentsSeparatedByString(".").last!
    if let shortcutType = Shortcut(rawValue: type) {
        switch shortcutType {
        case .aboutMe:
            NSNotificationCenter.defaultCenter().addObserver(RAIntroductionViewController(), selector: #selector(RAIntroductionViewController.aboutMeTap), name: "about", object: nil)
            NSNotificationCenter.defaultCenter().postNotificationName("about", object: self)
            quickActionHandled = true
        case .education:
            NSNotificationCenter.defaultCenter().addObserver(RAIntroductionViewController(), selector: #selector(RAIntroductionViewController.educationTap), name: "education", object: nil)
            NSNotificationCenter.defaultCenter().postNotificationName("education", object: self)
            quickActionHandled = true
        case .projects:
            NSNotificationCenter.defaultCenter().addObserver(RAIntroductionViewController(), selector: #selector(RAIntroductionViewController.projectsTap), name: "projects", object: nil)
            NSNotificationCenter.defaultCenter().postNotificationName("projects", object: self)
            quickActionHandled = true
        case .why:
            NSNotificationCenter.defaultCenter().addObserver(RAIntroductionViewController(), selector: #selector(RAIntroductionViewController.whyPressed(_:)), name: "why", object: nil)
            NSNotificationCenter.defaultCenter().postNotificationName("why", object: self)
            quickActionHandled = true
        }
    }
    return quickActionHandled
}

func application(application: UIApplication, performActionForShortcutItem shortcutItem: UIApplicationShortcutItem, completionHandler: (Bool) -> Void) {
    completionHandler(handleQuickAction(shortcutItem))

}

这是RAIntroductionViewController的viewDidLoad方法中的代码：

 NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(self.aboutMeTap), name: "about", object: nil)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(self.educationTap), name: "education", object: nil)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(self.projectsTap), name: "projects", object: nil)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(self.whyPressed(_:)), name: "why", object: nil)

那些观察者调用推送导航控制器的方法。

虽然一切正常，但导航控制器在应用首次启动时并未推送到正确的页面。它只是转到根视图控制器。

Answer 1

当应用程序首次启动时，application:performActionForShortcutItem shortcutItem:completionHandler: 不会被调用。

相反，您应该在 application:didFinishLaunchingWithOptions: 中处理此问题。

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {        
    if let options = launchOptions,
       let shortcutItem = options[UIApplicationLaunchOptionsShortcutItemKey] as? UIApplicationShortcutItem {
       // do the work here..
    }
    return true
}

希望这会有所帮助:)