ios10判断通知是否开启

    [[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {

        if (settings.authorizationStatus == UNAuthorizationStatusNotDetermined)

        {

            NSLog(@"未选择");

        }else if (settings.authorizationStatus == UNAuthorizationStatusDenied){

            NSLog(@"未授权");

            [self showAlertOfNotification];

        }else if (settings.authorizationStatus == UNAuthorizationStatusAuthorized){

            NSLog(@"已授权");

        }

    }];