Snap Kit doesn't open Snapchat with startSending - ios

Question

I'm trying out the Snap Kit Framework from Snapchat using their sample code but when running the code nothing happens and no error is thrown.
import SCSDKCreativeKit
let snap = SCSDKNoSnapContent()
snap.sticker = SCSDKSnapSticker(stickerImage: UIImage(named: "story_share.png")!)
snap.caption = "Snap on Snapchat!"
snap.attachmentUrl = profileURL.absoluteString
SCSDKSnapAPI().startSending(snap) { (error: Error?) in
print(error)
}
The logs don't indicate an error either:
myapp[853:121028] [SnapKit] Dynamic config update status: success
Things I've tried or insured are correct:
My app is registered online with the correct bundle id, my test snapchat username and the creative kit is selected
the development key is in the Info.plist file as SCSDKClientId
snapchat is in the list of LSApplicationQueriesSchemes
the code runs on the main thread
using their userInteractionEnabled trick doesn't make a difference
I'm using carthage and embed the core and creative framework as usual
What could be the reason why this doesn't work?

Answer 1

I found the disappointing answer that it only works using the deprecated method call:
SCSDKSnapAPI(content: snap).startSnapping() { (error: Error?) in
...
}
I hope that Snapchat fixes their terrible framework in the future. If anyone knows an actual solution, please let me know and I'll accept your answer.

Answer 2

SCSDKSnapAPI() needs to be defined as a class variable. Your code doesn't show the implementation, but I had the same issue when I instantiated SCSDKSnapAPI() in a func() instead of at the Class level.
Here's an implementation that I found which works as intended:
class CreateViewController: UIViewController {
fileprivate lazy var snapAPI = {
return SCSDKSnapAPI()
}()
#IBAction func sendSnap2(_ sender: Any) {
//self.snapAPI = SCSDKSnapAPI() <<DO NOT DO THIS>>
let snap2 = SCSDKNoSnapContent()
view.isUserInteractionEnabled = false
snapAPI.startSending(snap) { [weak self] (error: Error?) in
self?.view.isUserInteractionEnabled = true
if (error != nil) {
print("Error Unknown", error!)
}
else {
print("no error")
}
}
}