Example to define your custom Notification name:
extension Notification.Name {
static let BluetoothStatusChangeNotification = Notification.Name("BluetoothStatusChangedNotification")
static let BeaconStatusStartNotification = Notification.Name("BeaconStatusStartNotification")
static let BeaconStatusStopNotification = Notification.Name("BeaconStatusStopNotification")}
Example to show how to post a notification with parameter.
let bluetoothStatus = "your bluetooth status."//monitor the status with the specific callback.
NotificationCenter.default.post(name: .BluetoothStatusChangeNotification, object: bluetoothStatus)
Example of useage
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
//Check Bluetooth Status First if on (online and AR) else off (offline and AR)
NotificationCenter.default.addObserver(self, selector: #selector(self.bluetoothStatusChanged(notification:)), name: .BluetoothStatusChangeNotification, object: nil)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
NotificationCenter.default.removeObserver(self, name: .BluetoothStatusChangeNotification, object: nil)
}
Example of received method
func bluetoothStatusChanged(notification:Notification){
if let status = notification.object as? Bool {
//Your logic
}
}
网友评论