Book Image

Core Data iOS Essentials

By : Bintu Harwani, B. M. Harwani
Book Image

Core Data iOS Essentials

By: Bintu Harwani, B. M. Harwani

Overview of this book

Core Data is the essential ingredient in data driven iOS apps. It's used for storing, retrieving, and manipulating application data in databases, XML, and binary formats. It's an essential component for iPhone, iPod Touch, and iPad apps.Core Data Essentials provides a clear, readable guide to the most useful aspects of Core Data. Built around a realistic example app, the book showcases the most important aspects of Core Data development in the context of a complete, functioning app written in Objective C.The book starts with a tour of how the app works. Then you'll see how to easily display data using the Table View. You'll learn how to develop an appropriate data model that fits the needs of your app, then implement that model as updatable data objects. You'll see how to update data and build relationships between objects and learn how Core Data can work with search, and how to provide your users with friendly data editing features.
Table of Contents (19 chapters)
Core Data iOS Essentials
About the Author
About the Reviewers

Building the data object for the Customer and the Product entities

To build the data objects (classes) associated with the entities and their relationships defined in the data model, we will follow the given steps:

  1. 1. Click an entity (Customer or Product) in the data model editor and then choose File | New File option. We get a dialog box to choose the template for the new file.

  2. 2. Select Cocoa Touch Class from under the iPhone OS heading in the left pane and select Managed Object Class template. We get a dialog box that prompts for the location of generating managed object class. Keeping the location as the default select the Next button.

  3. 3. Check the Customer and the Product entity in the dialog box that appears (as shown in the following screenshot). We find two checkboxes that are already checked: Generate accessors and Generate Obj-C 2.0 Properties. Keeping the two checkboxes checked, select the Finish button.

We will find four files: Customer.h, Customer.m, Product.h, and Product.m, which...