Ultimate iOS App Development Guide Master iOS App Development by Building Five End-to-End iOS Applications (Surabhi Chopada) (Z-Library)

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Ultimate iOS App Development Guide Master iOS App Development by Building Five End-to-End iOS applications Using Swift, Xcode, HealthKit, and CoreML Surabhi Chopada www.orangeava.com

Copyright © 2024 Orange Education Pvt Ltd, AVA™ All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews. Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author nor Orange Education Pvt Ltd or its dealers and distributors, will be held liable for any damages caused or alleged to have been caused directly or indirectly by this book. Orange Education Pvt Ltd has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capital. However, Orange Education Pvt Ltd cannot guarantee the accuracy of this information. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. First Published: August 2024 Published by: Orange Education Pvt Ltd, AVA™ Address: 9, Daryaganj, Delhi, 110002, India

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Dedicated To My beloved grandparents: Shakuntala and Zankarmal Chopada My supportive parents, Neeta and Tushar And my inspiring brother, Yash Thank you for your unconditional support and encouragement

About the Author Surabhi Chopada is an experienced iOS Developer originally from Ahmednagar, Maharashtra, India. She pursued an Engineering degree in Information Technology from PVG Pune. After gaining valuable experience in India, she relocated to Copenhagen, Denmark, to continue her professional journey. Her path to becoming an iOS Developer is truly inspiring. Her interest in iOS was sparked by her fascination with the iPhone 4. Despite not initially having access to a Mac, she managed to enroll in a brief three-month iOS development course and later taught herself in this field. Today, her expertise has culminated in the writing of this book. Her story is a testament to the power of passion and determination in achieving career success. It illustrates that with perseverance and self-motivation, one can overcome obstacles and reach their goals. With a career spanning over a decade, Surabhi Chopada has been actively involved in iOS development since 2013. She possesses extensive experience in both Objective-C and Swift, with a diverse background in app development across various domains, including Banking and Finance, Medical and Healthcare, IoT, AI-ML, and Enterprise applications. Furthermore, she has showcased her knowledge through published articles and has also excelled in teaching iOS application development, sharing valuable insights and skills with aspiring developers. Beyond her technical expertise, she is passionate about mentoring aspiring students who aim to enter the technology field. Additionally, she is actively involved with an organization dedicated to promoting and increasing the representation of women in technology.

Her motivation for writing this book was to provide a starting point for anyone seeking practical experience in iOS development. She envisioned this book as a valuable reference for both beginners and those looking to deepen their understanding. Each chapter has been carefully crafted to incorporate real-world applications and current industry practices. Her aim was to bridge the gap between theoretical knowledge and practical implementation, making this book a robust resource for aspiring iOS developers.

About the Technical Reviewer Aman Kesarwani is a passionate iOS developer with over 8 years of experience in crafting innovative and user-friendly mobile applications. He holds a Bachelor’s Degree in Computer Science and has a deep understanding of the iOS development landscape. In his current role as Senior iOS Developer at Priceline, Aman spearheads the development of high-performing iOS applications. His responsibilities include: Leading the technical vision: Aman actively participates in the design and planning stages of projects, ensuring that applications align with user needs and business goals. Building and maintaining robust applications: He possesses expertise in Swift, Objective-C, Xcode, and various iOS frameworks, allowing him to write clean, efficient, and maintainable code. Collaboration and mentorship: Aman fosters a collaborative environment by working closely with designers, UI/UX professionals, and other developers. He also enjoys mentoring junior developers and sharing his knowledge. Staying ahead of the curve: Aman is a continuous learner, actively keeping himself updated with the latest trends and technologies in the iOS development world, including VisionOS and Data Science.

Throughout his career, Aman has successfully delivered numerous impactful applications used by millions of users. He is a strong advocate for clean code principles and delivers projects on time.

Acknowledgements There are several individuals to whom I would like to express my deepest gratitude for their unconditional support during the writing of this book. First and foremost, I am profoundly thankful to my parents, grandparents, brother, and entire family. Their blessings, encouragement, and constant motivation have been invaluable throughout this journey. Without their support, completing this book would not have been possible. I also wish to extend my heartfelt thanks to my friends for their unconditional support and for always reminding me of my strengths. Their encouragement has been a great source of inspiration. Furthermore, I am deeply grateful to all my colleagues and the incredible companies I have had the privilege to work with. Their collective wisdom and the opportunities for learning and growth they provided have significantly contributed to my ability to write this book and share my knowledge. A special thank you goes to the team for their incredible support and for providing me with this opportunity to publish the book. Their belief in my abilities has been instrumental in bringing this project to you. I would also like to thank Mr. Aman Kesarwani for his technical feedback, which helped me improve the chapters. Lastly, I want to express my gratitude to God for granting me the strength and opportunities to reach this stage in my career. I have experienced a

sense of magic and wonder at each step in my career, and I hope to continue learning and sharing my knowledge with the world. Thank you all for being part of this incredible journey.

Preface In this book, we will guide you through the core concepts and techniques that will help you in iOS app creation. As we progress through each chapter, we will delve into the essential components of iOS app development. With each concept, we will provide clear explanations and practical examples that enable you to apply your knowledge in real-world applications. Along the way, we will look into creating some exciting projects that allow you to put your skills into practice. From building a simple to-do list app to more advanced projects like HealthKit and Core ML integration, each project will help you understand specific concepts. This book will also cover the app distribution process to the App Store. Whether you are a budding developer in search of a solid foundation or a seasoned developer aiming to broaden your expertise, this book will be your guide on the path to achieving success in iOS development. The goal of writing this book was to bridge the gap between theoretical knowledge and practical application, making it a valuable resource for aspiring iOS developers. This book is thoughtfully structured into 10 chapters. The initial chapter provides a fundamental explanation of core concepts, serving as a solid foundation for beginners. Each subsequent chapter extends into practical sample projects, enabling readers to learn and apply concepts in a hands- on manner. This book is designed to be your practical guide on the journey to creating iOS applications. The chapters seamlessly blend theoretical iOS and Swift concepts with practical implementation, guiding you through the development of

projects that range from basic to advanced levels. These projects are carefully selected to build a strong foundation in application development, equipping you with the necessary skills to excel in the field. Whether you are a novice or looking to deepen your expertise, this book offers a robust resource that supports your growth as an iOS developer. Chapter 1: This chapter serves as an introductory guide to iOS development, focusing on the essential aspects of iOS app development. It begins by exploring the fundamental concepts of creating iOS applications. You will gain insights into the basics of iOS app development and tools utilized in the iOS development process. Additionally, the chapter will provide an overview of setting up Xcode IDE used for iOS development. Chapter 2: This chapter examines the fundamental structure of an iOS app and explores principles related to user interface design and layout. You will understand the significance of utilizing storyboards, delve into the lifecycle of ViewControllers, and gain insights into implementing navigation within your app. Chapter 3: This chapter explores Swift's features and its advantages over Objective C. We will delve into the core concepts that make Swift an exceptional programming language. Chapter 4: This chapter provides hands-on experience to explore key aspects of app development, including user interface design, data management, user interaction, and more. By the end of this chapter, you will have a functional To-Do list app that you can use to keep track of tasks.

Chapter 5: This chapter explores fundamental concepts crucial for building a weather forecast app. We will start by learning how to get a user's current location using Core Location. Next, we will delve into the world of API network requests, learning how to fetch real-time data from external sources. We will also cover the topic of JSON parsing. With a firm understanding of these core concepts, we will apply them in practice by creating a simple and practical weather forecast app. Chapter 6: This chapter delves into the integration of social media into our iOS app, using Facebook as our example platform. We will explore essential functionalities, including creating an app on the Facebook Developers Portal, implementing Facebook login within the app, viewing user profiles, and enabling post sharing on user accounts. By the end of this chapter, you will have a solid understanding of seamlessly integrating Facebook into your app. Chapter 7: This chapter will help you understand HealthKit and its practical applications. Furthermore, we will guide you through the creation of a sample app, demonstrating how to effectively read data from HealthKit and write data back to it. By the end of this chapter, you will have an overview of how to use HealthKit to its fullest potential for enhancing the health and fitness app’s functionality. Chapter 8: This chapter explores Core ML, examining its features, functionalities, and practical application. We will also delve into the Vision framework, using it to guide the creation of a practical image classification application. This hands-on approach aims to provide valuable insights into Core ML and the Vision framework, enhancing your understanding of machine learning on the iOS platform.

Chapter 9: This chapter will guide you through different aspects of unit testing, including its benefits and illustrative examples. Additionally, we will explore essential topics such as debugging in iOS. Furthermore, we will look into the process of deploying an application to the App Store. Chapter 10: This chapter focuses on SwiftUI, exploring its core principles and advantages. We will also delve into the practical aspects of implementing SwiftUI layouts. Furthermore, we will examine the process of integrating SwiftUI into existing iOS applications. This integration will involve understanding how SwiftUI interacts with existing UIKit components and adapting your codebase to accommodate SwiftUI. In addition to SwiftUI, we will also explore the concept called SwiftData.

Downloading the code bundles and colored images Please follow the link or scan the QR code to download the Code Bundles and Images of the book: https://github.com/ava-orange-education/Ultimate-iOS-App- Development-Guide The code bundles and images of the book are also hosted on https://rebrand.ly/153801

In case there’s an update to the code, it will be updated on the existing GitHub repository. Errata We take immense pride in our work at Orange Education Pvt Ltd and follow best practices to ensure the accuracy of our content to provide an indulging reading experience to our subscribers. Our readers are our mirrors, and we use their inputs to reflect and improve upon human errors, if any, that may have occurred during the publishing processes involved. To let us maintain the quality and help us reach out to any readers who might be having difficulties due to any unforeseen errors, please write to us at : errata@orangeava.com Your support, suggestions, and feedback are highly appreciated.

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Table of Contents 1. Introduction to iOS Development Introduction Structure Introduction to iOS Functionalities of iOS App Development Process Tools for Development Xcode Setup Creating Your First iOS Project Introduction to Xcode IDE Architecture Patterns MVC: Model-View-Controller MVVM: Model-View-ViewModel Conclusion 2. Getting Started with iOS App Development Introduction Structure Structure of an iOS App ViewController Lifecycle Introduction to Storyboard Design Using Storyboard Layouts Programmatic User Interface Storyboard User Interface Navigation in iOS Conclusion

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