ios - 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。它运行完美，除非应用程序首次启动时。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 Controller 的方法。

虽然一切正常，但当应用程序首次启动时，导航 Controller 并没有被推送到正确的页面。它只是转到 Root View Controller 。

Answer 1

应用首次启动时，不会调用 application:performActionForShortcutItem shortcutItem:completionHandler:。

相反，您应该在 application:didFinishLaunchingWithOptions: 中处理它。

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
}

希望这有帮助:)