Book Image

iOS Programming Cookbook

By : Hossam Ghareeb
Book Image

iOS Programming Cookbook

By: Hossam Ghareeb

Overview of this book

Do you want to understand all the facets of iOS programming and build complex iOS apps? Then you have come to the right place. This problem-solution guide will help you to eliminate expensive learning curves and focus on specific issues to make you proficient at tasks and the speed-up time involved. Beginning with some advanced UI components such as Stack Views and UICollectionView, you will gradually move on to building an interface efficiently. You will work through adding gesture recognizer and touch elements on table cells for custom actions. You will work with the Photos framework to access and manipulate photos. You will then prepare your app for multitasking and write responsive and highly efficient apps. Next, you will integrate maps and core location services while making your app more secure through various encryption methods. Finally, you will dive deep into the advanced techniques of implementing notifications while working with memory management and optimizing the performance of your apps. By the end of the book, you will master most of the latest iOS 10 frameworks.
Table of Contents (22 chapters)
iOS Programming Cookbook
About the Author
About the Reviewer
Customer Feedback

Using NSURLSession API for network connections

The NSURLSession is one of the greatest APIs that has been added to the iOS framework and is to be used in setting up connections between the app and the backend, and fetching contents from your server. In this section, we will talk in details (but not boring detail) about NSURLSession: how to deal with it, and what kind of tasks it can do. We will build a demo project for this chapter and, in each section, we will add a feature related to the topic in the project.

Getting ready

With Apple, by default, NSURLSession supports the following URL schemes:

  • File Transfer Protocol: (ftp://)

  • Hypertext Transfer Protocol: (http://)

  • Encrypted Hypertext Transfer Protocol: (https://)

  • File URLs: (file://)

  • Data URLs: (data://)

In the app, you can have multiple sessions, and each session can deal with a group of related data connections. Any kind of operation done via NSURLSession is called a task, which is a subclass of an abstract class, called NSURLSessionTask. We...