readValue(for:)
Retrieves the value of a specified characteristic descriptor.
Declaration
func readValue(for descriptor: CBDescriptor)Parameters
- descriptor:
The characteristic descriptor whose value you want to read.
Discussion
When you call this method to read the value of a characteristic descriptor, the peripheral calls the peripheral(_:didUpdateValueFor:error:) method of its delegate object. If the peripheral successfully retrieves the value of the characteristic descriptor, you can access it through the characteristic descriptor’s value property.