CODEWITHSUNDEEP
iosobjective-c
B.S.
B.S.

Reputation: 21726

How to handle if app is opened from URL in didFinishLaunchingWithOptions method?

When iOS application is opened from some URL AppDelegates's methods are called in such a sequence:

1. - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

2. - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url

How to know in didFinishLaunchingWithOptions method if application was opened from URL or not. May be there are some launching options which I miss?

Upvotes: 6

Views: 6898

Answers (4)

brigadir
brigadir

Reputation: 6942

Actually answers about UIApplicationLaunchOptionsURLKey are correct but not complete. In case if user for example taps Universal Link in Messages app and is redirected into your app, you receive these launch options instead of UIApplicationLaunchOptionsURLKey:

[
    UIApplicationLaunchOptionsSourceApplicationKey: com.apple.MobileSMS,
    UIApplicationLaunchOptionsUserActivityDictionaryKey: [
         UIApplicationLaunchOptionsUserActivityKey: <NSUserActivity>,
         UIApplicationLaunchOptionsUserActivityTypeKey: NSUserActivityTypeBrowsingWeb
    ]
]

So, to check if user landed into the app from URL you need this code in this case:

let isFromUrl = ((launchOptions?[UIApplicationLaunchOptionsKey.userActivityDictionary] as? NSDictionary)?[UIApplicationLaunchOptionsKey.userActivityType] as? String == NSUserActivityTypeBrowsingWeb)

and if the check passes, handle incoming URL in:

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([Any]?) -> Void) -> Bool {
    if userActivity.activityType == NSUserActivityTypeBrowsingWeb {
        let url = userActivity.webpageURL
        // do your stuff ...
    }
return false
}

Upvotes: 3

Max Komarychev
Max Komarychev

Reputation: 2856

You can inspect launchOptions passed to - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions.

Look for section Launch Options Keys in reference docs, specifically UIApplicationLaunchOptionsURLKey

Upvotes: 9

mathieug
mathieug

Reputation: 901

First, you should implement application:didFinishLaunchingWithOptions:
Check the URL. It should return YES if you can open it or NO if you can't.

And then implement application:handleOpenURL:
Open the URL. It should return YES if successful or NO.

Upvotes: 1

Eric Genet
Eric Genet

Reputation: 1260

If your app has been launch from a URL You will find a 

UIApplicationLaunchOptionsURLKey

in the launchOptions Dictionary of - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

On a related note the handleOpenURL: method is deprecated, you should use:

-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation

Upvotes: 6

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