CODEWITHSUNDEEP
swiftcore-bluetoothxcode7
Luke Pistrol
Luke Pistrol

Reputation: 1209

Core Bluetooth Optional Type not CBCentralmanager

I'm working on a project including CoreBluetooth. I researched about that topic and found some tutorials on the web.

Now I recreated some of these tutorials and in almost every method I'm getting the following error:

Initializer for conditional binding must have Optional type, not 'CBCentralManager'

func centralManagerDidUpdateState(central: CBCentralManager) {
    if let central = central{ //Here is the error line
        if central.state == CBCentralManagerState.PoweredOn {
            print("Bluetooth ON")
        }
        else {
            // Can have different conditions for all states if needed - print generic message for now
            print("Bluetooth switched off or not initialized")
        }
    }

}

Upvotes: 0

Views: 202

Answers (1)

Paulw11
Paulw11

Reputation: 114846

The CBCentralManager that is passed to the delegate method is not an optional - it has no ? suffix, so you don't need to unwrap it. This is what the error is telling you - you are trying to unwrap a variable that is not an optional.

You can just say

func centralManagerDidUpdateState(central: CBCentralManager) {
    if central.state == CBCentralManagerState.PoweredOn {
        print("Bluetooth ON")
    }
    else {
        // Can have different conditions for all states if needed - print generic message for now
        print("Bluetooth switched off or not initialized")
    }
}

Upvotes: 2

Related Questions