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

Running the project

Let us run the project to see whether we get the old and new values entered for the name attribute (while modifying the information of the customer):

  1. 1. Select Run | Console option to open the console.

  2. 2. From the console's toolbar, select Build and Run icon from the Xcode Project window. We get the names of customers that are currently available in the persistent store in the table view (as shown in the following screenshot):

  3. 3. Select any customer's name from the table view to view his complete information. Such as, on selecting the customer: John his information will be displayed, as shown in the following screenshot. The Text Fields showing the customer's information are in the disabled mode, that is, we cannot edit any information at the moment.

  4. 4. Select the Edit button in the navigation bar to have all the Text Field controls enabled and we can click on any Text Field control to modify its contents. The Title of the Edit button changes to Done when the Text Fields...