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Core Data for iOS: Developing Data-Driven Applications for the iPad, iPhone, and iPod touch, Rough Cuts

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Description

  • Copyright 2011
  • Dimensions: 7 X 9
  • Pages: 256
  • Edition: 1st
  • Rough Cuts
  • ISBN-10: 0-321-67061-2
  • ISBN-13: 978-0-321-67061-8

This is the Rough Cut version of the printed book.

Today, virtually every non-trivial iPhone and iPad app must manage data—quickly, smoothly, reliably, and with minimal impact on the CPU to conserve battery life. Core Data, Apple’s ready-made data persistence layer, can help you achieve all these goals. In Core Data for iOS, two leading iOS developers teach you the entire Core Data framework from the ground up. Writing for intermediate-to-advanced iOS developers, Tim Isted and Tom Harrington thoroughly explain how Core Data is used on iOS devices, introduce each of its primary classes, and show how they interact to provide amazing functionality with minimal configuration. You’ll learn how to store, fetch, and validate data; provide it efficiently to views; and much more. Isted and Harrington first give you a firm grounding in the technology, and then present real-world examples. They present multiple sample projects, as well as a start-to-finish, chapter-length case study. Coverage includes

• Understanding Core Data’s features, classes, and interactions

• Using Core Data in MVC-based iOS app development

• Mapping relational data to object models, and building them with Xcode 4’s Data Modeler

• Working with managed objects and using UITableView to display them

• Creating predicates to match numbers, data, and objects

• Maintaining compatibility across versions of an app’s data model

• Tracking managed object contexts across view controllers

• Using Core Data’s automatic Undo functionality

• Integrating abstract entities, entity inheritance, and multiple view controllers into a complete app

• Optimizing for iOS devices’ tight memory limits

• Diagnosing and fixing common Core Data problems

Introducing Addison-Wesley’s new Core Frameworks Series, written for experienced iOS developers by world-class Mac and iOS developers, these are the first comprehensive, code-rich reference guides to Apple’s Core Frameworks.

Sample Content

Table of Contents

Preface   ix

Part I  Introduction

1  An Overview of Core Data on iOS Devices    3

A Little History    3

The Birth of Core Data     4

Why Use Core Data on iOS?     4

Relationship Management     4

Managed Objects and Data Validation     5

Undo and State Management    5

Core Data iOS and Desktop Differences    5

The Fetched Results Controller     6

Core Data Case Studies     6

MoneyWell for iPhone     6

Calcuccino     7

Associated Press     8

2  A Core Data Primer    9

Persisting Objects to Disk     9

The Core Data Approach     10

Entities and Managed Objects    10

Relationships    11

Managed Object Contexts    12

Fetching Objects     14

Faulting and Uniquing     14

Persistent Stores and Persistent Store Coordinators     15

Examining the Xcode Core Data Templates     15

The Navigation-Based Project Template    16

The Data Modeler     16

Setting up the Core Data Stack     17

Running the Application    20

A Quick Look at the RootViewController Code     20

Summary     21

3  Modeling Your Data    23

Managed Objects and Entities     23

Dividing Your Data into Entities     24

Core Data in Model-Object Terms     24

Data Normalization     25

Storing Binary Data     27

Working with Xcode’s Data Modeler     28

Creating Entities     29

Creating Properties     31

Creating Relationships     35

Summary     37

Part II  Working with Core Data

4  Basic Storing and Fetching    41

Creating New Managed Objects     41

Saving the Context    42

Fetching Saved Managed Objects     44

Deleting Managed Objects    45

Working with Table Views     46

The Random Dates Application Project     47

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