在Swift 3中检查launchOptions

Question

我已将代码转换为swift 3并已提交至应用商店。当他们打开应用程序时，它会在第一时间崩溃。结果，我检查了我的崩溃日志，它在这一行崩溃了。

    if let myLaunchOptions: NSDictionary = launchOptions as NSDictionary? {

我的整体代码是这样的。我知道launchOptions可能是零，甚至可能不是NSDictionary。这就是为什么我这样检查它并且它在那条线上失败了。我可以知道用swift 3检查/预防的其他方法吗？

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    if let myLaunchOptions: NSDictionary = launchOptions as NSDictionary? {
        let test = myLaunchOptions[UIApplicationLaunchOptionsKey.userActivityDictionary] as! NSDictionary
        let userActivity = test["UIApplicationLaunchOptionsUserActivityKey"] as! NSUserActivity
        NSLog("test1:" + String(describing: userActivity))
        continueUserActivity(userActivity)
        }

我的崩溃日志在这里。

Answer 1

您应该检查并获取以下用户活动：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    if let userActivityDictionary = launchOptions?[.userActivityDictionary] as? [UIApplicationLaunchOptionsKey : Any],
        let userActivity = userActivityDictionary[.userActivityType] as? NSUserActivity {
        continueUserActivity(userActivity)
    }

    return true
}

Answer 2

我必须更新@David Rodrigues的解决方案才能在Swift 4中运行，因为.userActivityType是NSString。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    if let userActivityDict = launchOptions?[.userActivityDictionary] as? [AnyHashable : Any],
        let userActivity = userActivityDict["UIApplicationLaunchOptionsUserActivityKey"] as? NSUserActivity {
        continueUserActivity(userActivity)
    }

    return true
}