Bluetooth permission on IOS<13

[aviya-smila]

I have an issue with IOS pre 13, the callback for permission.request isn't being called.
is there a way to callback with authorized automatically?

[kaiserabliz]

I don't think callback works for Bluetooth permission authorization change. I suggest you check the authorization status in viewDidLoad for your action or use UIApplication.didBecomeActiveNotification key with NotificationCenter.
Or this might answer your question:
Replace code in Bluetooth.swift
if #available(iOS 13.0, *) {
switch CBCentralManager().authorization {
case .restricted: return .disabled
case .denied: return .denied
case .notDetermined, .allowedAlways: break
@unknown default: return .notDetermined
}
} else {
switch CBPeripheralManager.authorizationStatus() {
case .restricted: return .disabled
case .denied: return .denied
case .notDetermined, .authorized: break
@unknown default: return .notDetermined
}
}