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

Chapter 9. Entering, Displaying, and Deleting the Stock

In the previous chapter, we learnt now to add a Product entity to our existing Data Model and also how to enter and maintain the information of the product(s) sold to the selected customer. In this chapter, we will learn:

  • To create a MasterProduct entity that will be used for storing the information of products that the vendor is dealing with, that is, stock.

  • The concept of the data type: transformable that is used for creating custom data types for storing the image of the product. Also, we will be learning how Image Picker works and is used in selecting images. Besides this, we will be learning about some methods that will be used to make the image to appear within the specified size.

  • How a Value Transformer is created that is used for converting custom object into an NSData instance for saving in persistent store.

  • How to enter, save, display, delete, and modify the information of the master products that our vendor deals with.

The information...