Checking launchOptions in Swift 3

Question

I have converted my codes to swift 3 and I have submitted to app store. When they open app, it crash at first time. As a result, I check my crashlog and it crash at this line.

    if let myLaunchOptions: NSDictionary = launchOptions as NSDictionary? {

My overall code is like this. I know that launchOptions can be nil and it might not even be NSDictionary. That's why I have checked like that and it fail at that line. May I know how else to check/prevent with swift 3?

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)
        }

My crash log is here.

What's the point of casting to `NSDictionary`? It's Swift code, leave it as a Swift dictionary. — rmaddy, Oct 18 '16 at 16:13
ah..sorry @rmaddy. my bad. yes. i will use dictionary. I am used to objective-c code. I have updated to show crash log. — Khant Thu Linn, Oct 18 '16 at 16:36
That doesn't show the error. There should be an error in the crash log. — rmaddy, Oct 18 '16 at 16:45
I am trying to check error but I can't find detail from that. The one I have is crashlog from apple. https://gist.github.com/khantthulinn/1daa6cd0756ace7c0fbbfa6578f3fa6f But I don't know how to find where it crash from there. — Khant Thu Linn, Oct 18 '16 at 16:58

score 14 · Accepted Answer · answered Oct 18 '16 at 16:42

14

You should be checking and obtaining user activity like this:

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
}

answered Oct 18 '16 at 16:42

David Rodrigues

844
6
6

I have used yours and it fix my issue. Apple now approve my app. Thanks you. – Khant Thu Linn Oct 21 '16 at 06:55
2

I don't think this is totally right; `.userActivityType` would return an NSString from the dictionary. – Jonny May 31 '18 at 05:27

score 9 · Answer 2 · answered Jan 05 '19 at 10:34

I had to update @David Rodrigues' solution in order to make this work in Swift 4 because .userActivityType is 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
}

Checking launchOptions in Swift 3

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