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2013-08-19T14:39:07.777
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I'm a beginner with iOS but I have done some example with CoreData to store users info. First, you need to create your model with your entity (I suppose you have already done). In my example, my entity is called "User". First, add a property similar to this <pre><code>NSManagedObjectContext *context; </code></pre> to your ViewController class. Second, in your viewDidLoad method, add this two lines: <pre><code>AppDelegate *appdelegate = [[UIApplication sharedApplication]delegate]; context = [appdelegate managedObjectContext]; </code></pre> And third, store your info: <pre><code>NSEntityDescription *entitydesc = [NSEntityDescription entityForName:@"User" inManagedObjectContext:context]; NSManagedObject *newUser = [[NSManagedObject alloc]initWithEntity:entitydesc insertIntoManagedObjectContext:context]; [newUser setValue:(NSString *)[dictionary objectForKey:@"name"] forKey:@"name"]; [newUser setValue:(NSString *)[dictionary objectForKey:@"surname"] forKey:@"surname"]; ... NSError *error; [context save:&error]; </code></pre> (I take my properties from a NSDictionary called dictionary) To read your info: <pre><code>AppDelegate *appdelegate = [[UIApplication sharedApplication]delegate]; context = [appdelegate managedObjectContext]; NSEntityDescription *entitydesc = [NSEntityDescription entityForName:@"User" inManagedObjectContext:context]; NSFetchRequest *request = [[NSFetchRequest alloc]init]; [request setEntity:entitydesc]; //NSPredicate *predicate = [NSPredicate predicateWithFormat:@"NULL"]; [request setPredicate:nil]; NSError *error; NSArray *matchingData = [context executeFetchRequest:request error:&error]; //NSArray *matchingData = [context executeFetchRequest:nil error:&error]; // If the user is not logged in previously if (matchingData.count <=0 ){ //self.displaylabel.text = @"No person find"; } else { // If the user is already logged in for (NSManagedObject *obj in matchingData) { AppDataModel *appDataModel=[AppDataModel getInstance]; appDataModel.appUserInfo = [User alloc]; appDataModel.appUserInfo.name = [obj valueForKey:@"name"]; appDataModel.appUserInfo.surname = [obj valueForKey:@"surname"]; } } </code></pre>
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1. POCore Data not saving objects persistently
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1. COThanks a lot! I eventually ended up building the app from scratch but couldn't figure out what went wrong in the first place! Thanks a lot for helping!
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 USSanchit Bareja

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