From Swift to the App Store Skills You Need to Build iOS Apps

London School of Emerging Technology > Mobile Development > From Swift to the App Store Skills You Need to Build iOS Apps
iOS Apps

All these promises of the world of iOS app development make every developer excited about creating an app that can reach millions worldwide. However, to get through this highly competitive world, aspiring developers need to master many technical skills alongside creativity. From programming with Swift to creating user-friendly interfaces, each skill matters for a great, high-quality app.

This blog discusses the top skills that are inherent for successful iOS app development, hence becoming a roadmap for both beginners and pros looking forward to enhancing their skills in this subject.

Mastering Swift Programming Language

Swift by Apple is to develop apps for iOS devices. Launched in 2014 as a language that is easy to learn and strong enough to create complex applications.

Why Swift: Although the syntax is readable, nobody will ever contend that Swift is a language to be toyed with in real applications. For example, being able to take full advantage of much more advanced concepts, like generics, closures and error handling, sets one apart from most developers.

How to Learn: Swift First, the simple things like variables, data types, loops and conditionals, then onto more complex things. Apple’s Swift Playgrounds and the accompanying documentation are useful for getting hands-on practice.

Understanding iOS Frameworks

All these iOS frameworks, such as UIKit, SwiftUI and Core Data, have to be developed to give you a functional and beautiful app. These frameworks offer you just about everything you would need to tackle, from designing your app’s user interface to handling its data and interacting with the system.

UI Kit Vs Swift UI: UI Kit is one of the original frameworks created by Apple for any design work user interface. Meanwhile, Swift UI is just a new declarative framework that was introduced in 2019. Nowadays, despite the majority of apps still being built on UI Kit, Swift UI has become increasingly popular simply because it is easier to use and widely integrated with many of Apple’s latest tech advancements.

Core Data: This framework helps manage app data effectively, storing, retrieving, and modifying user data within an application.

Interface Design: Crafting User-Friendly Experiences

Nevertheless, application responsiveness is highly dependent on the elaboration of the graphical user interface and as it is known, iOS users expect to have well-designed, responsive and intuitive apps. One more crucial strength that iOS developers have is the ability to design interfaces.

Key UI Principles: Concentrate on usability, simplicity and consistency. Strive for the standards of usability and user experience, and be sure that your app sticks to Apple’s Human Interface Guidelines, which consist of standards for making an intuitive interface.

Swift UI and UI Kit for the UI: This means you should be able to learn how to design both Swift UI and UI Kit interfaces with the understanding of choosing between them, considering the kind of project you want to develop. Swift UI simplifies the view-construction process using its declarative syntax while allowing wider control over complex UIs in UI Kit.

Debugging and Testing: Ensuring App Quality

Developing an application does not only mean typing codes; in fact, the code should be flow-less and free of bugs as well. Debugging and testing are some of the basic competencies any iOS developer needs to ensure that the application delivers a seamless experience.

Debugging in Xcode: Xcode is Apple’s official IDE and offers a lot of built-in debugging tools with which to find your bugs and potentially fix them. Learn how to use breakpoints, the debug console, and Instruments to profile your app’s performance.

Automated Testing: Acquaint yourself with XCTest as well as other unit testing and UI testing frameworks. It ensures your app is correctly behaving regardless of the update or implementation of new feature instigations.

Working with APIs and Networking

For the most part, almost any iOS application will pull information from some kind of external data source to fetch a news feed, stream a video, or communicate to cloud servers. This is where APIs (Application Programming Interfaces) and networking come into play.

Networking Fundamentals: Becoming aware of the flow of data across the internet through HTTP requests and RESTful APIs is important. Swift provides several inbuilt networking libraries, which make it very easy to create applications with API integrations seamlessly.

JSON Parsing: Learn how to parse JSON data, commonly used to transfer information between a server and an application. Even though Swift’s protocol makes it easier to encode and decode JSON objects, in some cases, it is much better to handle the parsing without the protocol.

App Store Submission: Navigating the Final Steps

In essence, the final steps of the development process involve the submission of your app to the App Store, which demands tremendous insight into what Apple looks for and how to structure the submission process so that your app gets approved and published.

App Store Guidelines: Apple has rules concerning privacy, interface, and content. The least one should do is skim through the App Store Review Guidelines in order to ensure that your app is developed to be in compliance with these guidelines.

App Store Connect: Discover how you get your application out in the market using an interface provided by Apple for uploading applications, changing metadata such as title, description and photos, and viewing statistics to see how your application is fairing in the market. This will encompass setting up a developer account, a walkthrough of setting up an app, uploading screenshots and what you should prepare and submit for review.

Version Control with Git

Most of the time, the articles you would probably write will be for projects which require inputs from many people or recurring edits. Because of this, it is important to learn how to use Git, a version control system, to contain the code changes.

Why Git: Git deals with changes to the codebase and enables you to share your code with other developers; if something goes wrong, you can move back to previous versions of your project.

Using Git: First of all, you should learn basic commands like git init, git commit, and git push. Some popular platforms where you can host your repositories and collaborate with others are GitHub and GitLab.

Conclusion

Mastering the art of iOS app development means something so much wider than simply learning how to code: it means mastering the entire concept and design that flows from idea to design to development, debugging, and deployment. You can master iOS app development with practical and hands-on learning courses from the London School of Emerging Technology (LSET). You will get to learn from the basics and advance with the opportunity to get into an internship with LSET’s internship program. 

FAQs

What is the benefit of interning with LSET’s iOS app development course?

An internship will provide you with work experience and help students understand the concepts of iOS application development deeply, which will make students experienced and confident towards their skills.

Is Swift tough for a newcomer to learn?

Swift has gained popularity because of its simplicity and readability of syntax, which makes it easier for novices than other popular languages.

How can I run unit tests in Xcode for the very same iOS applications that I am developing?

Xcode provides some of the best testing tools, including unit testing with XCTest and performance profiling using Instruments.

Do I need to learn UIKit and SwiftUI, or will one or both be enough?

Well, that’s true. SwiftUI is the new framework, but learning UIKit is something that’s good for projects that need to be customised better and have more compatibility with previous iOS and legacy system versions.

How do I get my app into the App Store?

You’ll have to create an account with Apple Developers. Then, you have to use App Store Connect to upload your app, and you must follow the guidelines that Apple gives on how the app needs to be reviewed.

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