Using most recent saved data with Core Data - ios

Question

I am completing some items on a check list. I am counting the completed items using the following method:
- (NSUInteger)completedCount {
return [DIDTask MR_countOfEntitiesWithPredicate:[NSPredicate predicateWithFormat:#"completed == YES && list == %#", self]];
}
The problem I have is when I'm calling the method on a list - list.completedCount - immediately after the data is saved it does not give me the correct count but rather the value - 1. Only after when the app change screen for instance or display a pop-up (as per below), then list.completedCount gives me the correct value. But this is too late for me.
[UIAlertView showAlertViewWithTitle:#"Are you OK?" message:task.name cancelButtonTitle:#"Stop" otherButtonTitles:#[#"Yes", #"No"] handler:^(UIAlertView *alertView, NSInteger buttonIndex) {
if (buttonIndex > 0) {
[MagicalRecord saveWithBlock:^(NSManagedObjectContext *localContext) {
[[task MR_inContext:localContext] setCompletedValue:buttonIndex == 1];
} completion:^(BOOL success, NSError *error) {
}];
[self continueAutomaticModeWithList:list taskIndex:index + 1];
}
}];
My question is how can I update or refresh the app immediately when the data is saved so that list.completedCount gives me the correct count right away?

Answer 1

It doesn't work, because [self continueAutomaticModeWithList:list taskIndex:index + 1]; is performed before the save completes. You have to move it to the completion block:
[UIAlertView showAlertViewWithTitle:#"Are you OK?" message:task.name cancelButtonTitle:#"Stop" otherButtonTitles:#[#"Yes", #"No"] handler:^(UIAlertView *alertView, NSInteger buttonIndex) {
if (buttonIndex > 0) {
[MagicalRecord saveWithBlock:^(NSManagedObjectContext *localContext) {
[[task MR_inContext:localContext] setCompletedValue:buttonIndex == 1];
} completion:^(BOOL success, NSError *error) {
[self continueAutomaticModeWithList:list taskIndex:index + 1];
}];
}
}];