Book Image

iOS Programming Cookbook

Book Image

iOS Programming Cookbook

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
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Using Touch ID for user authentication


The fingerprint, also known as Touch ID from a developer's perspective, is one of the greatest features in new Apple devices, starting from iPhone 5s, and now in modern android devices as well. Most people think that Touch ID is used for authenticating the user to unlock their devices only but, actually in iOS, you can use it to unlock the device, make payments, authenticate a user for apps that support Touch ID, and download apps from the App Store. In this recipe, we will see how to integrate Touch ID in an iOS app to authenticate the user instead of having them retype their credentials.

Getting ready

Apple provides developers with a framework, called Location Authentication. It handles all heavy tasks for you and takes care of the access sensor and authenticating the user, and gets back to you with a result and error, if any. It's very important to know that the framework doesn't share or expose any information or data, that represents or has a relation...