How to know if a Bluetooth Device is Connected in iOS?

Question

What is the best way to know on how a Bluetooth Device is already connected? I am using CBCentralManager to identify if the Bluetooth is Powered ON but I am unable to find out on how I can identify If a Bluetooth Device is already connected.

I am implementing routing of AVAudioSession Calls via a Connected Bluetooth device but AudioSession Category changes are getting called repeatedly due to which I am unable to find if a Bluetooth Device is connected or not. If anyone have tried to implement this behaviour, Your inputs might be helpful. Please share the information.

Answer 1

I am using CBPeripheral.state ==.connected to check the state of the BLE device.

From the documentation:

/**
 *  @enum CBPeripheralState
 *
 *  @discussion Represents the current connection state of a CBPeripheral.
 *
 */
@available(iOS 7.0, *)
public enum CBPeripheralState : Int {

    
    case disconnected = 0

    case connecting = 1

    case connected = 2

    @available(iOS 9.0, *)
    case disconnecting = 3
}