Configuring ItemVC for the Unit Picker

The Assistant Editor was used to create a reference to the unit picker text field through a new unitPickerTextField property. For picker text fields to send selected values back to the text field, the ItemVC needs to adopt the CoreDataPickerTFDelegate protocol.

Update Grocery Dude as follows:

1. Update ItemVC.h to adopt the CoreDataPickerTFDelegate protocol. For convenience, Listing 7.7 shows what ItemVC.h should look like once this update has been made.

Listing 7.7 ItemVC.h

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#import <UIKit/UIKit.h>#import "CoreDataHelper.h"#import "UnitPickerTF.h"@interface ItemVC : UIViewController<UITextFieldDelegate,CoreDataPickerTFDelegate>@property (strong, nonatomic) NSManagedObjectID ...

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