In the middle of difficulty lies opportunity.
In Chapter 6 you started building the Item view as the concept of passing managed objects around the application was demonstrated. The primary focus was to introduce text-fields as a means to edit managed objects. This chapter will explain how to create special text-fields that have a Core Data driven
UIPickerView as the input view. The purpose of a picker text-field is to make selecting from pre-defined values such as a shop aisle as easy and fast as possible
Picker-views make it easy to set a managed object property value using a pre-defined list. The
unit.name properties are ideal candidates for setting ...