You've implemented -[<UIApplicationDelegate>application:didReceiveRemoteNotification:fetchCompletionHandler:], but you still need to add "remote-notification" to the list of your supported UIBackgroundModes in your Info.plist.How to resolve this error?

Can't find Done Key in numberpad or decimalpad, how can I remove the keyboard after typing number?

How to write a file to iCloud Drive Documents folder?