How to handle launchOptions: [NSObject: AnyObject]? in Swift?

Question

In a Swift AppDelegate class, you get the following method:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    // ...code...
    return true
}

The launchOptions: [NSObject: AnyObject]? parameter is an optional. In Objective-C this is passed as an NSDictionary. I'm looking to extract the UIApplicationLaunchOptionsRemoteNotificationKey from it. Here's how it's done in Objective-C:

NSDictionary *remoteNotification = launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey];

if (remoteNotification)
{
    // ...do stuff...
}

How would you go about doing that in Swift?

score 27 · Accepted Answer · answered Oct 29 '14 at 21:56

27

In Swift, you'd do it like this:

if let remoteNotification = launchOptions?[UIApplicationLaunchOptionsRemoteNotificationKey] as? NSDictionary {
    // ...do stuff...
}

answered Oct 29 '14 at 21:56

vacawama

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how can I log to the screen what remoteNotification contains. As the app needs to be launched from a push notification while the app attached to xcode? – Feb 16 '16 at 15:43
The best way to see what is actually happening would be to throw a UIAlertView up with the message as the contents of the print statement you would otherwise be logging. – Peter Kaminski Jul 22 '16 at 03:44

score 1 · Answer 2 · answered May 02 '16 at 07:49

1

I handle it in Swift like this:

if let remoteNotification = launchOptions?[UIApplicationLaunchOptionsRemoteNotificationKey] as? [NSObject : AnyObject] {
    // ... do stuff
}

answered May 02 '16 at 07:49

patrickS

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score 0 · Answer 3 · edited Jul 27 '17 at 09:07

0

I think for Swift 3, it would be like this:

if (launchOptions?[UIApplicationLaunchOptionsKey.remoteNotification] as? NSDictionary) != nil {
    // ...do stuff          
}

edited Jul 27 '17 at 09:07

Pang

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answered Jul 27 '17 at 08:34

eyup cimen

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How to handle launchOptions: [NSObject: AnyObject]? in Swift?

3 Answers3