iOS Action Extension not opening my main app - ios

Question

I want to be able to open Safari links in my app. For this I have created an Action Extension. I have tried multiple variations of the following code to test but none of them open my main app:
First try:
func openContainerApp() {
var responder: UIResponder? = self as UIResponder
let selector = #selector(openURL(_:))
while responder != nil {
if responder!.responds(to: selector) && responder != self {
responder!.perform(selector, with: URL(string: "awesome://item?id=20036169")!)
}
responder = responder?.next
}
self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}
Second try:
func redirectToHostApp() {
let url = URL(string: "awesome://item?id=20036169")
let selectorOpenURL = sel_registerName("openURL:")
let context = NSExtensionContext()
context.open(url! as URL, completionHandler: nil)
var responder = self as UIResponder?
while (responder != nil){
if responder?.responds(to: selectorOpenURL) == true{
responder?.perform(selectorOpenURL, with: url)
}
responder = responder!.next
}
}
I have added the "awesome" URL scheme in my main app. I am also returning "true" for all possible openURL delegate methods in my app delegate:
func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool {
return true
}
func application(_ application: UIApplication, handleOpen url: URL) -> Bool {
return true
}
func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
return true
}
I have set the NSExtensionActivationSupportsWebURLWithMaxCount in my action extension to 1.
Despite all this, my main app doesn't open. Tapping on the action extension in Safari does nothing.
I have tried these solutions but none work:
https://stackoverflow.com/a/28037297/1634905
https://forums.developer.apple.com/thread/65621

Answer 1

I figured it out by myself and wanted to share this in case someone gets stuck with the same.
My problem was that I was calling the openContainerApp or redirectToHostApp functions from viwDidLoad() where the UIResponder is apparently not ready yet.
I moved the function call to viewWillAppear() and it worked.
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
openContainerApp()
}