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peripheral(_:didWriteValueFor:error:)

Tells the delegate that the peripheral successfully set a value for the characteristic.

Declaration

optional func peripheral(_ peripheral: CBPeripheral, didWriteValueFor characteristic: CBCharacteristic, error: (any Error)?)

Parameters

  • peripheral:

    The peripheral providing this information.

  • characteristic:

    The characteristic containing the value.

  • error:

    The reason the call failed, or nil if no error occurred.

Discussion

Core Bluetooth invokes this method only when your app calls the writeValue(_:for:type:) method with the CBCharacteristicWriteType.withResponse constant specified as the write type. If successful, the error parameter is nil. If unsuccessful, the error parameter returns the cause of the failure.

See Also

Writing Characteristic and Descriptor Values