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

Removing the keyboard after selecting a customer's name

To remove the keyboard when any customer name is selected from the table view, we need to use the tableView:willSelectRowAtIndexPath: method. In this method, we inform the Search Bar to resign the first responder's status, which will cause the keyboard to go away and return the indexPath, as shown next:

-(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[srchbar resignFirstResponder];
return indexPath;

We can also do the same by using tableView:didSelectRowAtIndexPath: method. On implementing the preceding method in the implementation file: RootViewController.m, we find that the keyboard goes away on selecting any customer's name from the table view.

Let us run the project to see the searching facility implemented by us. So, select the Build and Run icon from the Xcode Project window. Initially, the Search Bar is empty and hence the whole list of customer names will be displayed in...