In an era where the popularity of Swift, Apple’s own programming language, is increasing rapidly, let’s understand how its design patterns can make a difference for your app.
Updated 6 November 2023
Global Delivery Head at Appventurez
The all-time increasing growth in the app development industry is not a new thing anymore. Today, people are spending most of their time in front of their mobile screens. But do you know where? Well, according to a study by eMarketer, most American adults spend 88% of their mobile time on mobile applications.
Due to this reason, a large section of business owners is focusing on mobile app development, iOS app development to be specific. And this upsurge has even risen to an entirely new level since the evolution of Swift, Apple’s programming language, in 2014. It is a robust, multipurpose language that offers developers an opportunity to craft intuitive iOS applications.
Although it has been over eight years since it was launched, Swift and its functionalities are still pretty new for most users. Many of them aren’t aware that by using specific iOS Swift design patterns, they can create top-notch applications.
Do you also belong to that section of the users? If yes, this informational piece can provide you with insights into the most popular iOS app design patterns used in Swift. So, let’s get started!
Before discussing the whats and hows of iOS application design patterns in Swift, let’s understand why we need to know about it in the first place. So, here it goes.
Witnessing the surge in mobile app usage, almost all businesses are investing more and more in this market. This is because the mobile app industry has become one of the greatest contributors to generating revenue globally. It has been reported that the global market app size is estimated to reach $206.73 billion in 2022.
Going into details, based on the app platform, iOS apps generated revenue way more than Android ones with a share of 62.88% in 2021, according to Statista. It is an interesting figure keeping in mind the number of applications present in the Google Play Store, almost three times greater than that of iOS applications.
Because of this, the expectations from iOS developers have also increased. Now, every product owner desires an app that could satisfy their target audience’s needs and business requirements.
Although a hi-tech, protocol-oriented language like Swift makes most of the operations effortless, you still need specific functionalities to build creative and reliable UIs. And that’s when Swift UI design patterns come into play and transform the coding landscape. These design patterns not only provide developers with a template to write code, but they also help create a simple and easy-to-work environment for them. However, the creative aspect lies in your hands and it’s up to you whether you fit your code into this template or not. Let’s walk through the benefits you can avail of with design patterns used in iOS.
The primary objective of using Swift design patterns for iOS app development is to make coding easier for programmers. These design patterns provide developers with a set of reusable techniques that help them craft interactive UIs while addressing specific development issues.
The iOS Swift design patterns are properly checked and made free of bugs and errors. That’s why they are in high demand and a perfect solution to design the architecture of your mobile apps. And that’s not it. These design patterns can also aid developers in solving new issues associated with the development.
Therefore instead of creating these patterns and testing them to make them bug-free, they can be used as they are and even reused for saving time and effort.
One of the most significant benefits of iOS design patterns is that they provide you with typical solutions to identify errors in code, detect bugs, and structure the application in the best way possible. It mitigates the chances of making mistakes while developing and designing your apps.
Who says that to tackle a challenging situation you need a complex solution, too? While using design patterns in Swift, there is no need to incorporate a lengthy, in-depth explanation of how to resolve an issue. You can simply define the design pattern used in the development process and the other developers will get an idea about the solution implemented.
When it comes to different types of design patterns in iOS app development, there are three broad categories of classification, which are further divided into different subcategories. Here are they:
Let’s discuss each of these ios swift design patterns one by one:
The first type in this list is Creational design patterns that deal with object creational mechanisms. When developers create an object, they mainly instantiate a class, or in simple words, create an instance of a class. Creational design patterns in Swift provide you with concrete facts that support the objects in a specific situation. The most commonly used ios UI design patterns are:
To identify and implement a common communication pattern between different entities, behavioral design patterns are used. The most popular design patterns included in this category are:
As the name suggests, this category of Swift design patterns for iOS app development is responsible for maintaining the structure of the app. These design patterns streamline the design and identify the simplest way to form a connection between objects and classes. Here are some of the widely used structural design patterns:
It is one of the most popular creational design patterns in Swift used for creating complex objects from basic objects. In this design pattern, you can generate multiple views of an object using the same code.
One of the things to keep in mind while working on this design pattern is that you need to separate the building process for an object based on its class. The development process is multi-step and it requires the allocation of special objects known as builders. You have to repeatedly call the builder methods to develop an object. However, you don’t need to follow every step; only the ones that are required to construct an object would be needed.
The Factory design pattern in Swift is used to create objects without revealing the logic of creation. In simple terms, you don’t need to specify objects’ concrete classes to create them.
This method has several ‘flavors’, such as simple factory, abstract factory, etc. However, all of them have a single primary objective – to segregate objects’ creation logic within their construct.
As the name suggests, the Singleton design pattern is all about developing an individual instance of a class with global accessibility. Whenever you need a single instance for the first time, you can get one through this design pattern by using lazy loading.
You might wonder what’s the logic of having a single instance of a class. Well, there are times when only one instance of an item will make sense.
The Template Method is one of the behavioral Swift UI design patterns used widely in the iOS app development industry. It is used for defining the overall structure of the operational algorithm and assigning responsibilities to specific subclasses. This pattern allows subclasses to modify a few steps without making changes to the overall structure of the algorithm.
This design pattern in Swift breaks down the entire algorithm into a series of steps, segregates them into methods, and then calls them one by one using a single template method.
As the name suggests, the Observer design pattern in Swift notifies when a specific object’s state changes. In this behavioral design pattern, there is a specific object type, also known as the ‘subject’ that manages a list of dependents, or observers, coordinating in a one-to-many relationship.
The primary objective of the subject is to observe the behavior of specific objects and alert all the observers when the state of the object changes.
The second design pattern in the list is the Facade which presents complex systems in the simplest way. It offers an easy interface to a group of classes, libraries, and frameworks. With Facade, you can easily build your class and integrate various objects into it to a user-friendly interface and code. It eliminates the necessity of showing different methods using multiple interfaces.
There can be times when you will have objects with incompatible or different interfaces and you want to make them function together flawlessly. The Adapter design pattern can be your savior in such situations. It allows objects with different interfaces to interact with each other by transforming the interface of one object to adapt it to the other.
Eventually, you can use the Adapter to implement third-party classes when the interface is unsynchronized with the rest of the app code.
With the Decorator design pattern, you can include additional dynamic functionalities to an existing object by enclosing them in useful wrappers. That’s why it is also known as the ‘Wrapper Design Pattern.’
The central idea behind this design pattern is that you can place the target objects into another object if all of them have the same interface. You can also include responsibility and behavior to an object without changing the code. In addition to this, you can use various wrappers simultaneously to get their collective behavior.
Often referred to as the king of iOS design patterns, MVC is one of the most widely used architecture patterns for iOS applications. In this design pattern, you do not need to link the model with the data. The view can manage other things, such as animated buttons and interface design. However, as per the recommendation, you must choose another class to create the animation.
The controller is responsible for collecting all the data in one place. It is a complex component as it accesses the data from the model and presents it with the view. It also handles the data and makes modifications whenever necessary.
After walking through the most commonly used design patterns in iOS Swift one thing is probably clear to you — each of them has different characteristics and applications of use and you should pick one based on your business requirements.
Here are a few practices you can consider while choosing a suitable design pattern for your iOS application:
The most important benefit of design patterns is to simplify the mobile app development process. While analyzing the application’s core idea, you might come across several issues that might turn up while developing the app. Observing the problem, ensure you choose a design pattern that can help you fix it.
The next step is to identify the objective of the design pattern you are going to pick. Make sure its feature aligns with your business goals.
Sometimes, you can find more than one design pattern that might suit your business application needs. In that case, you need to compare them to identify the similarities and differences among them to make an effective decision.
If your application demands choosing different iOS UI design patterns, make sure you derive the relation between them and pick the ones that correlate with each other. Choosing the correlated iOS application design patterns in Swift and grouping them can help you get an interactive design.
You do not need to redesign the application completely when you know what part of the app design has issues. You can easily fix them with the right iOS app design patterns. However, for that, you need to determine what part of the design is variable and can be changed. Consequently, it will also help you choose a suitable design pattern in Swift.
In this era of digitization, your mobile app plays a key role in reflecting your brand image. The app design is the first thing that decides whether your app will get a green flag in the market or not. Therefore, choosing the right iOS UX design pattern becomes a critical decision, especially when you are expecting a robust iOS application.
Appventurez is an emerging iOS application development services that knows how valuable the role Swift design patterns play in maintaining the development flow. The professional iOS development team of Appventurez can comprehensively understand your project idea and needs. Based on that, they can help you pick a suitable design pattern that aligns with your core business objectives and build an app you have always desired.
Q. Which design pattern is best to build an iOS application?
An iOS design pattern helps you build a powerful iOS application in the least time possible. These iOS patterns are categorized into three main types — creational, behavioral, and structural. Moreover, they are further divided into subcategories and based on your business needs and objectives, you can choose amongst the different types of design patterns in iOS app development to develop a top-notch app.
Q. What is a design pattern in Swift app development?
Design patterns are nothing but reusable solutions to some of the most common issues in an app’s software design. A Swift design pattern helps the developers write code that’s easy to understand, apply, and reuse.
Q. What is the Observer design pattern in Swift?
The Observer design pattern is one of the most popular behavioral design patterns that allow specific objects in a system to inform other objects about certain changes in their state.
Global Delivery Head at Appventurez
Ashish governs the process of software delivery operations. He ensures the end product attains the highest remarks in qualitative analysis and is streamlined to the clientele’s objectives. He has over a decade of experience as an iOS developer and teams mentorship.
Posted : 17 July 2020
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