Initializer for conditional binding must have Optional type, not 'DynamicLinks'

Question

Im getting this error while building iOS app.

Error showing on the line which I Bolded here

This is my code

@available(iOS 8.0, *)
func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([Any]?) -> Void) -> Bool {
    **guard let dynamicLinks = DynamicLinks.dynamicLinks() else {**
        return false
    }
    let handled = dynamicLinks.handleUniversalLink(userActivity.webpageURL!) { (dynamiclink, error) in
        self.openURL(url: userActivity.webpageURL!)
    }

    if !handled {
        if let url = userActivity.webpageURL?.absoluteString {
            self.openURL(url: URL(string: url)!)
        }
    }
    return handled
}

It seems that that function doesn't return an optional, so you can't use a conditional assignment. — Paulw11, Oct 06 '18 at 09:51
The **bold** tag has no effect within a code section. `dynamicLinks()` is obviously a non-optional so the guard statement is pointless. just write `let handled = DynamicLinks.dynamicLinks().handleUniversalLink...` — vadian, Oct 06 '18 at 09:52
@vadian i believe he was trying to show where his error was. :) — Rakesha Shastri, Oct 06 '18 at 09:53
You do not need conditional assignment there. Replace the `guard let` with a simple assignment `let dynamicLinks = DynamicLinks.dynamicLinks()` — Rakesha Shastri, Oct 06 '18 at 09:53
@RakeshaShastri hi I replace the code with "let" but the error is still showing — Cebaca App, Oct 06 '18 at 10:08
@vadian I tried this let handled = DynamicLinks.dynamicLinks().handleUniversalLink... but error is still there — Cebaca App, Oct 06 '18 at 10:11
@vadian after removing that expression I'm getting this error "Use of unresolved identifier 'dynamicLinks'" — Cebaca App, Oct 06 '18 at 10:19
If `DynamicLinks.dynamicLinks()` throws the *conditional binding* error the compiler does know the identifier. Are you sure you added the parentheses after `dynamicLinks` ? — vadian, Oct 06 '18 at 10:23

score 0 · Accepted Answer · answered Oct 06 '18 at 10:24

Apparently DynamicLinks.dynamicLinks() doesn't yield an optional result. Change your code to this:

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([Any]?) -> Void) -> Bool {

    let dl = DynamicLinks.dynamicLinks()

    let handled = dl.handleUniversalLink(userActivity.webpageURL!) { (dynamiclink, error) in
        self.openURL(url: userActivity.webpageURL!)
    }

    if !handled {
        if let url = userActivity.webpageURL?.absoluteString {
            self.openURL(url: URL(string: url)!)
        }
    }
    return handled
}

Initializer for conditional binding must have Optional type, not 'DynamicLinks'

1 Answers1