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centralManager(_:didDisconnectPeripheral:error:)

Tells the delegate that the central manager disconnected from a peripheral.

Declaration

optional func centralManager(_ central: CBCentralManager, didDisconnectPeripheral peripheral: CBPeripheral, error: (any Error)?)

Parameters

  • central:

    The central manager that provides this information.

  • peripheral:

    The now-disconnected peripheral.

  • error:

    The cause of the failure, or nil if no error occurred.

Discussion

The manager invokes this method when disconnecting a peripheral previously connected with the connect(_:options:) method. The error parameter contains the reason for the disconnection, unless the disconnect resulted from a call to cancelPeripheralConnection(_:). After this method executes, the peripheral device’s CBPeripheralDelegate object receives no further method calls.

All services, characteristics, and characteristic descriptors a peripheral become invalidated after it disconnects.

See Also

Monitoring Connections with Peripherals