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

Understanding code of autogenerated files

On creating a new application through Xcode, it simplifies the task of the developer by generating several files for us that are required for successful execution of the application. The two important files that are autogenerated by Xcode are application delegate files. The question is what is the usage of application delegate files? The answer is quite simple: there are several important events that happen in the life of an application. The two most important events are launching and termination of the application. The application needs to know when these events happen or are about to happen. The iPhone OS notifies about these events through Application Delegate by calling its appropriate methods. iPhone OS calls the applicationDidFinishLaunching method when it finishes the launch procedure and calls applicationWillTerminate when the application is terminated, so as to close any open files.

Let's have a look at the code of the autogenerated files...