Core Data input fetches into labels - core-data

Question

I want to store data from a text field. And then use this data to populate the text in a label inside a view controller. Is this possible? Ive messed around with it, but nothing seems to work. Any thoughts? Here are my two methods...
- (IBAction)saveButton:(id)sender {
CoreDataStack *coreDataStack = [CoreDataStack defaultStack];
NSManagedObject *noteEntry = [NSEntityDescription insertNewObjectForEntityForName:#"Notes" inManagedObjectContext:coreDataStack.managedObjectContext];
[noteEntry setValue:_notesField.text forKey:#"notes"];
NSError *error = nil;
// Save the object to persistent store
if (![coreDataStack.managedObjectContext save:&error]) {
NSLog(#"Can't Save! %# %#", error, [error localizedDescription]);
}
[coreDataStack saveContext];
}
Here is my view did load method:
- (void)viewDidLoad
{
[super viewDidLoad];
CoreDataStack *coreDataStack = [CoreDataStack defaultStack];
NSFetchRequest *request = [[NSFetchRequest alloc] initWithEntityName:#"Notes"];
Notes *entry = [NSEntityDescription insertNewObjectForEntityForName:#"Notes" inManagedObjectContext:coreDataStack.managedObjectContext];
_outputLabel.text = entry.notes;
}

Answer 1

Your code in the saveButton: method seems OK. But your code in the viewDidLoad method seems wrong. Are you trying to do the following?
- (void)viewDidLoad {
[super viewDidLoad];
CoreDataStack *coreDataStack = [CoreDataStack defaultStack];
//First way to init your fetchRequest:
NSFetchRequest *request = [[NSFetchRequest alloc] initWithEntityName:#"Notes"];
//Second way to init your fetchRequest:
NSFetchRequest *request = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription entityForName:#"Notes" inManagedObjectContext:coreDataStack];
[fetchRequest setEntity:entity];
//Having a NSEntityDescription object can be usefull if you need to group your data, for example
//Set some predicates, if necessary
//Set some sortdescriptors, if necessary
NSError *error;
NSArray *resultsArray = [coreDataStack executeFetchRequest:request error:&error];
NSLog(#"%#", resultsArray);
_outputLabel.text = [[resultsArray firstObject] notes]; //if your array can only have one object
}
The NSLog will give you the structure of your fetch array (I can't guess it). You will then be able to set _outputLabel.text.

Answer 2

Answer by #user1966109 is exactly correct answer what you are looking for. Since you need to show the text in a label and for that you need to set predicate to get a single row. Set the predicate as below
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"value == abc"];//considerin abc is the word you are looking for.
request.predicate = predicate;
//then execute the query.