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

Parsing JSON data

In the previous demo, we saw how we can use URLSession to fetch data from an API in the form of a JSON response. In the demo, we printed the JSON response in the console. However, it doesn't work like that in real apps. In normal scenarios, we parse this JSON response and convert it to model objects, which are friendly enough and encapsulated so that they can be used directly in view controllers to update the UI or to do any logic. In this section, we will continue working on the same demo, but instead of printing out the JSON response in the console as we did earlier, we will parse and convert it to model objects and display them on the screen.

Getting ready

The API that we will use is from the randomuser website. Its supports pagination, and you can check it from the following URL:

In the API, you will see that we can pass the page parameter to indicate the page index and the results parameter for page size; these two parameters...