Core Data iOS Essentials by B.M.Harwani

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By B.M.Harwani

Knowing center information can provide the choice of constructing data-driven iOS apps, and this booklet is the correct option to examine because it takes you thru the method of constructing an exact app with hands-on instructions.

Overview

  • Covers the fundamental abilities you wish for operating with middle info on your applications.
  • Particularly taken with constructing quickly, gentle weight data-driven iOS applications.
  • Builds an entire instance program. each procedure is proven in context.
  • Completely useful with transparent, step by step instructions.

What you'll research from this book

  • Get a pretty good clutch of what center info is and the way it works
  • Build complete featured facts pushed functions for iOS devices
  • Design acceptable info types to suit your app's needs
  • Make your app's facts simply searchable
  • Display your facts in an enticing, versatile way

Approach

The publication follows an unfolding instance app, exploring the good points and rules of center info as they're additional to the app. The booklet is stuffed with step by step directions, transparent reasons, and helpful quickly reference material.

Who this e-book is written for

If you have got already explored iOS improvement and even perhaps dabbled with middle facts, this publication will set your data-driven program improvement on an organization footing.

In Detail

Core info is the fundamental component in information pushed iOS apps. it really is used for storing, retrieving, and manipulating program facts in databases, XML, and binary codecs. it really is a vital part for iPhone, iPod contact, and iPad apps.

Core facts necessities presents a transparent, readable consultant to the main important facets of center facts. equipped round a practical instance app, the ebook showcases crucial features of middle info improvement within the context of an entire, functioning app written in aim C.

The ebook starts off with a journey of ways the app works. Then you will see easy methods to simply reveal facts utilizing the desk View. you will how one can advance a suitable facts version that matches the wishes of your app, then enforce that version as updatable information gadgets. you will see tips to replace info and construct relationships among items and find out how center info can paintings with seek, and the way to supply your clients with pleasant facts modifying features.

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Additional resources for Core Data iOS Essentials

Sample text

Sum and multiply accept two arguments of data type int. In addition to defining a protocol, the SecondViewController class header file will also contain outlets, properties, and action methods. h> @protocol SecondViewControllerDelegate -(void) sum: (int) val1 secondparam: (int) val2; @optional -(void) multiply: (int) x secondvalue: (int) y; @end @interface SecondViewController : UIViewController { IBOutlet UITextField *value1; IBOutlet UITextField *value2; id delegate; } @property (nonatomic, retain) UITextField *value1; @property (nonatomic, retain) UITextField *value2; @property (nonatomic, retain) id delegate; -(IBAction) add:(id)sender; -(IBAction) multiply:(id)sender; @end In this code block, we also define two UITextField class instance variables: value1 and value2 and mark them as outlets.

We must create a subclass of UIViewController to manage our application view. To create a subclass of the UIViewController, follow these steps: 1. Right-click on the Classes group in the Xcode Project window and select Add | New File option. 2. A dialog box appears, asking us to select a template for the new file. Choose Cocoa Touch Class under the iOS section in the left pane. Then select the UIViewController subclass as the template for the new file. 3. Select the With XIB for user interface checkbox, followed by the Next button (refer to the following screenshot).

Let's suppose that Candace bought three loaves of bread, so we enter 3 in the Quantity text field as shown in image (b), then select the Save button from the navigation bar. We will be returned to the table view, which is shown in image (c). Note that the value 3 is displayed to the right of Bread, which tells us that the quantity of the bread sold to Candace was three. [ 34 ] Chapter 2 We can again select the Add button to add additional products sold to the customer. The next given image (a) displays the view when Eggs is selected from the available products list.

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