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Top Swift Design Patterns For iOS App Development

By 2023 the mobile market is expected to grow by $165billion with Swift acting as the next generation iOS language. So, the Swift design pattern is an ideal option

Top Swift Design Patterns For iOS App Development

By 2023 the mobile market is expected to grow by $165billion with Swift acting as the next generation iOS language. So, the Swift design pattern is an ideal option for iOS app development, hence it holds popularity in the market. In this post, you will learn about various categories of design patterns in Swift for iOS app development. 

We’ve chosen to assist by taking an in-depth look at the most often used design patterns in Swift and demonstrating several methods to tackling common difficulties in mobile development with them.

Swift design patterns – You have probably heard about this term, especially if you are an iOS developer with advanced skills. You are also familiar with the importance of choosing suitable design patterns for mobile app performance. It is a reusable solution to common issues in software development. It helps your iOS app development project run smoothly and become more readable, flexible, and reusable. Design patterns in swift are directly related to the functionality and security of apps designed to resolve common concerns about software design.

Table Of Contents

1. What is Design Pattern in swift?

2. Swift Design Patterns Types For iOS App Development

3. Most Frequently used Swift Design Patterns for creative and seamless iOS apps

4. How To Select The Right Swift Design Patterns To Create An iOS App?

5. Benefits Of Swift Design Patterns For iOS App Development

6. How can Appventurez Help In iOS App Development With The Right Swift Design Pattern?

7. FAQs

If you want to build a high-performing iPhone app, you need to follow the best iOS app development tools.  

What is Design Pattern in Swift?

A Swift design pattern is a solution to a specific issue you might face when designing the architecture of mobile apps. It is a template that lets you know how to write code.

There are different types of design patterns in Swift for developing a creative and seamless performance iOS app. As an expert developer, you know how iOS apps benefit businesses to grow and are even familiar with all types of Swift design patterns. But what if you are new to these design patterns? This post will guide you and be worthy for you!

Swift Design Patterns Types For iOS App Development

There are three types of design patterns in iOS app development process. And each category has some popular patterns. 

design pattern of swiftui

1 – Creational

One of the first swift design pattern categories for iOS app development tools is creational design patterns. 

Creational swift architecture patterns are meant for creating object mechanisms. The mechanism then provides concrete evidence in favor of the object. Evidence in favor then becomes suitable for a specific condition. 

There are different types of creational design patterns in Swift available like;

  • Factory
  • Abstract
  • Singleton
  • Builder

2 – Structural

Structural as the name suggests is the task of simplifying the app designing process while finding the easiest method for correlating objects and classes. 

It comes up with several methods like;

  • Facade
  • Adapter
  • MVC
  • Bridge
  • Decorator

3 – Behavioral

The communication pattern between units and the integration of patterns are gained through behavioral design patterns, Swift. 

Behavioral design patterns Swift is a set of methods like;

  • Template Method
  • Observer
  • Momento
  • Command

All the 3 categories of software design patterns do carry some of their important methods, forms, and examples which we haven’t explained in the category itself. Let’s talk about the most popular design patterns used in Swift for developing iOS apps. 

If you want to build an iOS app, you should have to be aware of the cost to develop an iOS app

Most Frequently used Swift Design Patterns for creative & seamless iOS apps

Here is a list of the top ten Swift design patterns you can use to build creative iOS apps:

  • Builder
  • Facade
  • MVC
  • Singleton
  • Template Method
  • Decorator
  • Delegate
  • MVVM
  • Adaptor
  • Observer

Let’s talk about them in detail:

1 – Builder

Builder is used when there is a need to develop complex objects from the simpler ones step by step. By using the same code, developers can create different object views. 

For instance- a complex object demands incremental initialization of nested objects and multiple fields. In such a situation, the initialization code might be hidden inside a mammoth constructor with parameters. Or chances are that the codes might be scattered over the client code. 

Now, to give a cure that is too quick, the Builder design pattern separates the construction of an object from its own class. 

When should you use the Builder pattern in Swift for iOS apps?

Here are some signs:

  • When avoiding telescopic constructor.
  • When code is required to create many views of a specific object.
  • When there is a need for composing complex objects.

2 – Facade

Another representative of the open source iOS app libraries for design patterns, Facade offers a simplified interface for complex systems. Irrespective of its numerous methods with different interfaces, developers can create their own class to provide a simplified interface. 

The facade is also useful when decomposing subsystems into different layers such as Remote Server, Database, File System and Memory.

The design pattern is considered ideal for working with various classes, especially the complicated ones!

When should you use Facade in Swift for iOS applications?

Here are some signs:

  • If you want to provide a simple or unique interface to a complicated subsystem
  • If you need to break down a subsystem into different layers

3 – MVC (Model-View-Controller): The King of Design Pattern

Model View Controller also called MVC is one of the most used iOS architecture patterns in swift among others. It simply classifies objects as per the requirements in the iOS application and ensures clean code separation against the role. 

The 3 role that accompanies the mechanism is-

1- Model

The model is the first part of MVC that holds the application data and then defines how to manipulate it. 

2- View

The second part of MVC is the object in charge of the visual representation of the Model and controls user interaction with it.

3- Controller

The third and the last part of the MVC controller is the mediator between all the work. The controller accesses all the data from the model and then displays data with a view, and manipulates it whenever required.

The overall communication between M-V-C is given below-

mvc architecture pattern

When should you use MVC patterns for iOS apps?

Here are some signs:

  • If you want to maintain the structure of data flow & messaging
  • If you want smooth transition and collaboration between your team and clients
  • If you want to keep your code from becoming one big pile of chaos

4 – Singleton

The Singleton design pattern is all about one instance for a given class with global accessibility. It uses lazy loading for creating a single instance when required for the first time. 

Now you might be thinking what is the use of a single instance! Well, there are chances and cases which only make sense with one instance of a class. 

When should you use the Singleton pattern in Swift?

Use the singleton design pattern:

  • When a class in your program should have just a single instance for all clients
  • When you need stricter control over global variables.

5 – Adaptor

The adapter design pattern required for developing the iOS design pattern app converts the class interface into another interface as per the client’s requirements. 

This adaptor allows classes to work together while decoupling the client from the class of the object targeted. 

Apple’s app store rules are a little different and this is the reason, the tech giant uses protocols for work using Adapter patterns. 

When should you use the Adapter iOS design pattern?

You should use this pattern:

  • When you need to use a third-party class but its interface doesn’t meet with your app’s code
  • When you want to use multiple existing subclasses but they don’t have specific functionality

6 – Template Method

The template design pattern in Swift defines the overall skeleton of the operational algorithm. Once done, the template method pattern then redefines the steps of an algorithm without making any change to the algorithm’s structure. 

When should you use the Template method for iOS apps?

You should use this design pattern:

  • When subclasses need to increase a fundamental algorithm without changing its structure
  • When you have different classes responsible for quite similar actions

7 – Decorator

It is a structural design pattern that lets you dynamically fix new functions to an object by wrapping them in useful wrappers. Undoubtedly, the Decorator is also known as the Wrapper design pattern. The core idea behind this pattern is that you can place a target object inside another wrapper object that triggers the target item’s behavior and adds its behavior to the result. You can use different wrappers at the same time to get the combined behavior of all these wrappers.

When should you use Decorator design patterns?

You should use this design pattern:

  • When you want to add responsibilities to objects dynamically and cover them from the code
  • When responsibilities of an object can be extended through inheritance

 8 – MVVM (Model-View-ViewModel)

Swift design patterns MVVM is one of the favorites among the iOS developers’ community. The View in MVVM architecture consists of visual elements like animation, UI components, layout, etc. 

Furthermore, the layer between the View and the Model called ViewModel represents the view in a canonical way. Hence, the ViewModel thus provides a set of interfaces and each interface then represents UI components in the view. 

The ios Swift design patterns MVVM version thus helps when it comes to swift for developing iOS design patterns applications. The expert developers know the difference between when to use MVC or MVVM as per the requirement. 

9 – Observer

The next design pattern called Observer defines a one-to-many dependency among objects. The dependency here means that when one object changes state, its related dependents will be notified and updated, automatically. 

An observer design pattern is also called Publish and subscribe model where the subjects and observers are coupled loosely. 

Here the communication takes place between observing and observed objects while eliminating the need to know about each other. 

How To Select The Right Swift Design Patterns To Create An iOS App?

Due to the huge choice of design patterns, there are some mobile app architecture best practices you should follow when choosing the Swift design patterns. 

1 – Figure out how the design pattern fixes the problem

Design patterns simplify mobile app development. During the development process, various issues have to be fixed immediately. Make sure you find out the right way in which a specific pattern can resolve the issues. 

2 – Check the design pattern purpose

The next step is to check the aim of the design pattern you are planning to select. This feature will also influence your choice. 

3 – Find out design patterns correlation

When it comes to selecting various Swift design patterns, it is important to ensure that they correlate correctly. It will help you select a group of patterns that can be easily grouped for a more effective design. 

4 – Compare design patterns

Some patterns are related to each other. So, it’s essential to compare patterns to find out their similarities and differences to get the right Swift design pattern for your iOS mobile application development project. 

5 – Check the reasons for a redesign

To avoid the need for product redesigning, all issues should be resolved with software design patterns. So, choice also relies on a wide range of issues you want to resolve. 

6 – Define the design’s variable parts

A design pattern can change without redesigning the entire application. You can easily solve the problematic part. So, you need to decide what things can be variable in the design. So, it will define the suitable design patterns for iOS mobile app development. 

Benefits Of Swift Design Patterns For iOS App Development

1 – Quite similar vocabulary

It is a belief that for every challenging situation, the need for complex solutions is mandatory. Well, this is not the situation when it comes to swift design for iOS apps business benefits

As per Flutter vs Swift’s comparison, the latter demands no mandated the need for complex solutions to overcome the challenges of design issues. Just by stating the design pattern in Swift, designers can still gain an idea about the design pattern. Simply stating can let them understand how to resolve the issue or get started with the one!

2 – The unification of code

The design pattern in Swift is important for figuring out solutions for bud detection or eradication. Here, Swift design patterns’ code unification acts as a helping agent in extracting mistakes, bugs, and errors while coding, or structuring the application. 

A comparison between Kotlin vs Swift showcases the latter eradicates mistakes before minimizing any sort of app-related glitches, bugs, or errors. 

3 – Tested Solutions

Design patterns in ios swift are already refined and eradicated from bugs and errors. And this is the reason they are smart and innovative. The pre-designed swift architecture patterns will then help in aiding new problems too. 

Hence, instead of redesigning or reinventing the process to have benefits of ios design patterns and making them error-free, these Swift app development services for design patterns can be reused for saving time and more effectiveness. 

How can Appventurez Help In iOS App Development With The Right Swift Design Pattern?

At Appventurez, a swift app development company we strongly recommend you get expert consultation with our innovative software structure. Selecting the right design pattern is an important task as it defines the development flow. Our experienced iOS developers discuss the peculiarities of your solution, and aid to define the main business aims and issues that should be addressed. So, you will successfully come to the right choice of design patterns for developing your desired iOS apps.

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FAQ’s

1- How many design patterns are there in iOS?

iOS patterns are classified into three types: creational, structural, and behavioral. Different patterns will naturally serve distinct objectives and have different functionalities.

2- What is Singleton design pattern in iOS?

The singleton design pattern ensures that only one object of its sort exists and offers a single point of access to it for any other programs. Singletons have nearly the same advantages and disadvantages as global variables. They are quite useful, but they destroy the modularity of your code.

3- What is iOS architecture?

The architecture of IOS is layered architecture. At the uppermost level iOS works as an intermediary between the underlying hardware and the apps you make. Apps do not communicate to the underlying hardware directly.


Ashish Chauhan

Global Delivery Head

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.

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