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Alex Rivera
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I'm having some problems in passing context from the app delegate to the view controller. I've found many tutorials on the internet, and all suggest to use the didFinishLaunchingWithOptions method to create the view controller, set the context property and push it. My problem is that I want to use storyboard, and the view controller is created and pushed within it, and not in the app delegate. I've tried to do this in my app delegate: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //instantiate local context NSManagedObjectContext *context = [self managedObjectContext]; if (!context) { // Handle the error. NSLog(@"Error: Context is null"); } //reference the view controller helloCoreDataViewController1_001 *rootViewController = [helloCoreDataViewController1_001 alloc]; // Pass the managed object context to the view controller rootViewController.managedObjectContext = context; return YES; } and this in my view controller: @implementation helloCoreDataViewController1_001 @synthesize name, address, phone, status, managedObjectContext; //.... - (IBAction)saveContact { NSLog(@"name: %@",self.name.text); NSLog(@"address: %@",self.address.text); NSLog(@"phone: %@",self.phone.text); //Save the new instance of the contact entity Contact *contact = (Contact *)[NSEntityDescription insertNewObjectForEntityForName:@"Contacts" inManagedObjectContext:managedObjectContext]; [contact setContactName:[NSString stringWithFormat:@"%@",self.name.text]]; [contact setValue:self.address.text forKey:@"address"]; [contact setContactPhone:[NSString stringWithFormat:@"%@",self.phone.text]]; NSError *error = nil; if (![managedObjectContext save:&error]) { // Handle the error. NSLog(@"error: %@", error.description); self.status.text = @"Error: contact NOT saved"; } else self.status.text = @"Contact saved"; } <
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