startFilter(completionHandler:)
Start the filter.
Declaration
func startFilter(completionHandler: @escaping @Sendable ((any Error)?) -> Void)func startFilter() async throwsParameters
- completionHandler:
A block that must be executed when the filter is running and is ready to filter network content.
Discussion
This method is called by the system to start the filter.
NEFilterProvider subclasses must override this method.
When this method is called, the Filter Provider should perform any steps necessary to initialize the filter and then execute the completionHandler block.