public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
{
UIApplication.SharedApplication.SetMinimumBackgroundFetchInterval(UIApplication.BackgroundFetchIntervalMinimum);
NSLogHelper.Write("BackgroundFetchDemo registered!");
var settings = UIUserNotificationSettings.GetSettingsForTypes(
UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound
, null);
UIApplication.SharedApplication.RegisterUserNotificationSettings(settings);
return(true);
}
public override void PerformFetch(UIApplication application, Action <UIBackgroundFetchResult> completionHandler)
{
NSLogHelper.Write($"BackgroundFetchDemo called PerformFetch at {{{DateTime.Now}}}");
if (!(Window.RootViewController is UINavigationController navigationController))
{
NSLogHelper.Write("BackgroundFetchDemo top viewcontroller should be UINavigationController");
completionHandler(UIBackgroundFetchResult.Failed);
return;
}
if (!(navigationController.TopViewController is DemoTableViewControler demoTableViewControler))
{
NSLogHelper.Write("BackgroundFetchDemo should contains a DemoTableViewControler");
completionHandler(UIBackgroundFetchResult.Failed);
return;
}
demoTableViewControler.InsertNewObjectForFetch(completionHandler);
UIApplication.SharedApplication.ApplicationIconBadgeNumber += 1;
}