NSURLSession with background configuration and app killed by user
问题 This is the scenario: NSURLSession with background Configuration Download or upload task start with Bad or No Internet Connection. User close the App. If iOS get Internet Connection will star session task. However, With task still waiting for Internet. User kills the App System cancel all pending tasks The Question It is possible to know when the user opens the app again that the tasks were cancelled? If yes, where? This Answer says yes, it is possible, but I can not get any callback