Hi Readers,

If you are using Alamofire framework to implement API service classes and you need to cancel all the request which are fetching data from server. You can use following Swift code snippet:

if #available(iOS 9.0, *) {
            Alamofire.Manager.session.getAllTasksWithCompletionHandler { (tasks) -> Void in
                tasks.forEach({ $0.cancel() })
            }
        } else {
            // Fallback on earlier versions
            Alamofire.Manager.session.getTasksWithCompletionHandler({
                $0.0.forEach({ $0.cancel() })
                $0.1.forEach({ $0.cancel() })
                $0.2.forEach({ $0.cancel() })
            })
        }

Now if we take a closer look, we have condition here for iOS 9. In iOS 9 we have get all request either those are outstanding data, upload and download tasks at once and we get completion handler and into it we cancel all request. While in the else condition we are managing iOS 8 or previous versions. In that condition we get tasks completion handler which gives us three different array of outstanding data, upload and download tasks. By which we enumerate all kind of tasks and cancel it.

Hope it will help. Thanks for reading.