NSDataDetector There are many application that extracting specific desired information from a string like date, url, link, address, number and many more. Using this specific desired information we can perform many useful action like create a event, open a url, save a contact number, navigate to particular address. Example The NSDataDetector class can match dates, addresses, links, phone numbers and transit information. NSDataDetector will be return one of the data detectors type, depending on the type of result being returned and they may have different properties. For example, Result of type link have have a url, result of type date