Hi,
I just tested with iOS 18.0.1 with the same issue. As soon as the peripheral device enters into background, the central device does not receive callbacks to
CBCentralManagerDelegate.centralManager(_:didDiscover:advertisementData:rssi:)
when scanning with scanForPeripherals(withServices:options:)
This worked before changing to iOS 18 and SWIFT 6.
Does anyone have some news about this topic or some feedback from Apple?
Thank you!
r07aNd
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
Hi,
I tried to apply the solution of Quinn to UNUserNotificationCenter.getNotificationSettings(completionHandler:) and get the error "Non-sendable type 'UNNotificationSettings' returned by implicitly asynchronous call to nonisolated function cannot cross actor boundary"
It would be great if someone could help me to fix it.
func getNotificationSettings() {
let center = UNUserNotificationCenter.current()
Task {
let settings = await center.notificationSettings() // here I get the error "Non-sendable type 'UNNotificationSettings' returned by implicitly asynchronous call to nonisolated function cannot cross actor boundary"
let authorizationStatus = settings.authorizationStatus
}
}
Thank you!
Hi,
I think here is also a discussion about that topic. Maybe someone has additional information?
Apple Developer Forum Thread 759280
Thank you!
Hi
in the meantime I solved it like this. Maybe this is helpful for someone.
func getUserNotificationPermission(completion: @Sendable @escaping (String) -> Void) {
DispatchQueue.global(qos: .userInteractive).async {
UNUserNotificationCenter.current().getNotificationSettings { settings in
if settings.authorizationStatus == .authorized {
completion("authorized")
}
if settings.authorizationStatus == .provisional {
completion("authorized")
}
if settings.authorizationStatus == .ephemeral {
completion("authorized")
}
if settings.authorizationStatus == .denied {
completion("denied")
}
if settings.authorizationStatus == .notDetermined {
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { success, error in
if success {
completion("authorized")
} else {
completion("denied")
}
}
}
}
}
}
I can call this function via a Button from a SwiftUI View:
struct ContentView: View {
var body: some View {
VStack {
Button("getUserNotificationPermission") {
getUserNotificationPermission { permission in
if permission == "authorized" {
print("permission: \(permission)")
}
}
}
}
}
}
Hey,
I tested with iOS 18.1 (22B82) and it works again.
Thank you!