Top Swift Design Patterns To Create Innovative iOS Apps
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Top Swift Design Patterns For iOS App Development

Ashish Chauhan By Ashish Chauhan | July 17, 2020

By 2023 the mobile market is expected to grow $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. 

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. 

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

What are Swift Design Patterns?

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 business 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!

1. Swift Design Patterns Categories for iOS app development

2. Most Frequently used Swift Design Patterns to develop a creative and seamless iOS app

3. What are the advantages of Swift Design Patterns for iOS applications?

4. How to select the right Swift Design Patterns to create an iOS app?

5. How can Appventurez help in iOS app development with the right Swift Design Pattern?

6. Frequently Asked Questions

Swift Design Patterns Types For iOS App Development

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

#1 – Creational

One of the first swift design patterns categories for iOS app development 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 and 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. 

You can read Swift Vs. Dart for quicker app development.

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.

For example: 

Imagine you are creating an iOS app for a restaurant and you want to implement ordering functionality. For that, you can introduce two structures: Dish and Order. With the aid of the OrderBuilder object, you can arrange orders with several sets of dishes.

// Design Patterns: Builder
import Foundation
// Models
enum DishCategory: Int {
  case firstCourses, mainCourses, garnishes, drinks
}
struct Dish {
  var name: String
  var price: Float
}
struct OrderItem {
  var dish: Dish
  var count: Int
}
struct Order {
  var firstCourses: [OrderItem] = []
  var mainCourses: [OrderItem] = []
  var garnishes: [OrderItem] = []
  var drinks: [OrderItem] = []
  
  var price: Float {
      let items = firstCourses + mainCourses + garnishes + drinks
      return items.reduce(Float(0), { $0 + $1.dish.price * Float($1.count) })
  }
}
// Builder
class OrderBuilder {
  private var order: Order?
  
  func reset() {
      order = Order()
  }
  
  func setFirstCourse(_ dish: Dish) {
      set(dish, at: order?.firstCourses, withCategory: .firstCourses)
  }
  
  func setMainCourse(_ dish: Dish) {
      set(dish, at: order?.mainCourses, withCategory: .mainCourses)
  }
  
  func setGarnish(_ dish: Dish) {
      set(dish, at: order?.garnishes, withCategory: .garnishes)
  }
  
  func setDrink(_ dish: Dish) {
      set(dish, at: order?.drinks, withCategory: .drinks)
  }
  
  func getResult() -> Order? {
      return order ?? nil
  }
  
  private func set(_ dish: Dish, at orderCategory: [OrderItem]?, withCategory dishCategory: DishCategory) {
      guard let orderCategory = orderCategory else {
          return
      }
      
      var item: OrderItem! = orderCategory.filter( { $0.dish.name == dish.name } ).first
      
      guard item == nil else {
          item.count += 1
          return
      }
      
      item = OrderItem(dish: dish, count: 1)
      
      switch dishCategory {
      case .firstCourses:
          order?.firstCourses.append(item)
      case .mainCourses:
          order?.mainCourses.append(item)
      case .garnishes:
          order?.garnishes.append(item)
      case .drinks:
          order?.drinks.append(item)
      }
  }
}
// Usage
let steak = Dish(name: “Steak”, price: 2.30)
let chips = Dish(name: “Chips”, price: 1.20)
let coffee = Dish(name: “Coffee”, price: 0.80)
let builder = OrderBuilder()
builder.reset()
builder.setMainCourse(steak)
builder.setGarnish(chips)
builder.setDrink(coffee)
let order = builder.getResult()
order?.price
// Result:
// 4.30

-source by github

#2 – Facade

Another representative of the iOS app design pattern 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

Example:

Several modern apps support audio recording and playback, so it’s better to implement this functionality. You can use the Facade pattern to hide the implementation of services responsible for the file system, audio sessions, recording and playback. This pattern provides a simple interface instead of a complicated system of classes.

// Design Patterns: Facade
import AVFoundation
// Services (may be not include in blog post)
struct FileService {
  private var documentDirectory: URL {
      return FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
  }
  
  var contentsOfDocumentDirectory: [URL] {
      return try! FileManager.default.contentsOfDirectory(at: documentDirectory, includingPropertiesForKeys: nil)
  }
  
  func path(withPathComponent component: String) -> URL {
      return documentDirectory.appendingPathComponent(component)
  }
  
  func removeItem(at index: Int) {
      let url = contentsOfDocumentDirectory[index]
      try! FileManager.default.removeItem(at: url)
  }
}
protocol AudioSessionServiceDelegate: class {
  func audioSessionService(_ audioSessionService: AudioSessionService, recordPermissionDidAllow allowed: Bool)
}
class AudioSessionService {
  weak var delegate: AudioSessionServiceDelegate?
  
  func setupSession() {
      try! AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayAndRecord, with: [.defaultToSpeaker])
      try! AVAudioSession.sharedInstance().setActive(true)
      
      AVAudioSession.sharedInstance().requestRecordPermission { [weak self] allowed in
          DispatchQueue.main.async {
              guard let strongSelf = self, let delegate = strongSelf.delegate else {
                  return
              }
              
              delegate.audioSessionService(strongSelf, recordPermissionDidAllow: allowed)
          }
      }
  }
  
  func deactivateSession() {
      try! AVAudioSession.sharedInstance().setActive(false)
  }
}
struct RecorderService {
  private var isRecording = false
  private var recorder: AVAudioRecorder!
  private var url: URL
  
  init(url: URL) {
      self.url = url
  }
  
  mutating func startRecord() {
      guard !isRecording else {
          return
      }
      
      isRecording = !isRecording
      recorder = try! AVAudioRecorder(url: url, settings: [AVFormatIDKey: kAudioFormatMPEG4AAC])
      recorder.record()
  }
  
  mutating func stopRecord() {
      guard isRecording else {
          return
      }
      
      isRecording = !isRecording
      recorder.stop()
  }
}
protocol PlayerServiceDelegate: class {
  func playerService(_ playerService: PlayerService, playingDidFinish success: Bool)
}
class PlayerService: NSObject, AVAudioPlayerDelegate {
  private var player: AVAudioPlayer!
  private var url: URL
  weak var delegate: PlayerServiceDelegate?
  
  init(url: URL) {
      self.url = url
  }
  
  func startPlay() {
      player = try! AVAudioPlayer(contentsOf: url)
      player.delegate = self
      player.play()
  }
  
  func stopPlay() {
      player.stop()
  }
  
  func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
      delegate?.playerService(self, playingDidFinish: flag)
  }
}
// Facade
protocol AudioFacadeDelegate: class {
  func audioFacadePlayingDidFinish(_ audioFacade: AudioFacade)
}
class AudioFacade: PlayerServiceDelegate {
  private let audioSessionService = AudioSessionService()
  private let fileService = FileService()
  private let fileFormat = “.m4a”
  private var playerService: PlayerService!
  private var recorderService: RecorderService!
  weak var delegate: AudioFacadeDelegate?
  
  private lazy var dateFormatter: DateFormatter = {
      let dateFormatter = DateFormatter()
      dateFormatter.dateFormat = “yyyy-MM-dd_HH:mm:ss”
      return dateFormatter
  }()
  
  init() {
      audioSessionService.setupSession()
  }
  
  deinit {
      audioSessionService.deactivateSession()
  }
  
  func startRecord() {
      let fileName = dateFormatter.string(from: Date()).appending(fileFormat)
      let url = fileService.path(withPathComponent: fileName)
      recorderService = RecorderService(url: url)
      recorderService.startRecord()
  }
  
  func stopRecord() {
      recorderService.stopRecord()
  }
  
  func numberOfRecords() -> Int {
      return fileService.contentsOfDocumentDirectory.count
  }
  
  func nameOfRecord(at index: Int) -> String {
      let url = fileService.contentsOfDocumentDirectory[index]
      return url.lastPathComponent
  }
  
  func removeRecord(at index: Int) {
      fileService.removeItem(at: index)
  }
  
  func playRecord(at index: Int) {
      let url = fileService.contentsOfDocumentDirectory[index]
      playerService = PlayerService(url: url)
      playerService.delegate = self
      playerService.startPlay()
  }
  
  func stopPlayRecord() {
      playerService.stopPlay()
  }
  
  func playerService(_ playerService: PlayerService, playingDidFinish success: Bool) {
      if success {
          delegate?.audioFacadePlayingDidFinish(self)
      }
  }
}
// Usage
let audioFacade = AudioFacade()
audioFacade.numberOfRecords()
// Result:
// 0

-source by github

#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- 

Model

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

View

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

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, manipulates it whenever required.

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

how mvc architecture pattern works

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

Example:

Suppose, in the future, you want to add movies or books to your library, you can still use the AlbumView for displaying your movie & book objects. In addition, you can create a new project that has something to do with albums by simply reusing your Album struct. The reason behind this is that it doesn’t rely on any view. 

When it comes to performance, have a look at the comparison: Swift Vs. Python.

#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.

Example:

There is one instance required for an iOS application and one main screen. In this case, you will be opting for a single instance only. Also, via a single instance, it is easy to implement thread-safe access shared resources like a configuration file.

#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

Example:

If you want to implement a calendar and event management function in your iOS app, you need to integrate the EventKit framework and adapt the Event model from the model framework in your app. An adapter can wrap the framework and make it compatible with your app’s model.

# 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

Example:

Suppose you are developing an iOS app that can take and save images. So, your app needs to get permission to use the iPhone camera and image gallery. For that, you can use the PermissionService base class that has a specific algorithm. By creating two substances (CameraPermissionService and PhotoPermissionService), you can get permission to use the camera and gallery. 

// Design Patterns: Template Method
import AVFoundation
import Photos
// Services
typealias AuthorizationCompletion = (status: Bool, message: String)
class PermissionService: NSObject {
  private var message: String = “”
  
  func authorize(_ completion: @escaping (AuthorizationCompletion) -> Void) {
      let status = checkStatus()
      
      guard !status else {
          complete(with: status, completion)
          return
      }
      
      requestAuthorization { [weak self] status in
          self?.complete(with: status, completion)
      }
  }
  func checkStatus() -> Bool {
      return false
  }
  
  func requestAuthorization(_ completion: @escaping (Bool) -> Void) {
      completion(false)
  }
  
  func formMessage(with status: Bool) {
      let messagePrefix = status ? “You have access to ” : “You haven’t access to “
      let nameOfCurrentPermissionService = String(describing: type(of: self))
      let nameOfBasePermissionService = String(describing: type(of: PermissionService.self))
      let messageSuffix = nameOfCurrentPermissionService.components(separatedBy: nameOfBasePermissionService).first!
      message = messagePrefix + messageSuffix
  }
  
  private func complete(with status: Bool, _ completion: @escaping (AuthorizationCompletion) -> Void) {
      formMessage(with: status)
      
      let result = (status: status, message: message)
      completion(result)
  }
}
class CameraPermissionService: PermissionService {
  override func checkStatus() -> Bool {
      let status = AVCaptureDevice.authorizationStatus(for: .video).rawValue
      return status == AVAuthorizationStatus.authorized.rawValue
  }
  
  override func requestAuthorization(_ completion: @escaping (Bool) -> Void) {
      AVCaptureDevice.requestAccess(for: .video) { status in
          completion(status)
      }
  }
}
class PhotoPermissionService: PermissionService {
  override func checkStatus() -> Bool {
      let status = PHPhotoLibrary.authorizationStatus().rawValue
      return status == PHAuthorizationStatus.authorized.rawValue
  }
  
  override func requestAuthorization(_ completion: @escaping (Bool) -> Void) {
      PHPhotoLibrary.requestAuthorization { status in
          completion(status.rawValue == PHAuthorizationStatus.authorized.rawValue)
      }
  }
}
// Usage
let permissionServices = [CameraPermissionService(), PhotoPermissionService()]
for permissionService in permissionServices {
  permissionService.authorize { (_, message) in
      print(message)
  }
}
// Result:
// You have access to Camera
// You have access to Photo

-source by github

# 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

Example:

Suppose you are planning to implement data management in your iOS app. You can create two decorator patterns such as EncryptionDecorator for encrypting and decrypting data and EncodingDecorator for encoding and decoding.

// Design Patterns: Decorator
import Foundation
// Helpers (may be not include in blog post)
func encryptString(_ string: String, with encryptionKey: String) -> String {
  let stringBytes = [UInt8](string.utf8)
  let keyBytes = [UInt8](encryptionKey.utf8)
  var encryptedBytes: [UInt8] = []
  
  for stringByte in stringBytes.enumerated() {
      encryptedBytes.append(stringByte.element ^ keyBytes[stringByte.offset % encryptionKey.count])
  }
  
  return String(bytes: encryptedBytes, encoding: .utf8)!
}
func decryptString(_ string: String, with encryptionKey: String) -> String {
  let stringBytes = [UInt8](string.utf8)
  let keyBytes = [UInt8](encryptionKey.utf8)
  var decryptedBytes: [UInt8] = []
  
  for stringByte in stringBytes.enumerated() {
      decryptedBytes.append(stringByte.element ^ keyBytes[stringByte.offset % encryptionKey.count])
  }
  
  return String(bytes: decryptedBytes, encoding: .utf8)!
}
// Services
protocol DataSource: class {
  func writeData(_ data: Any)
  func readData() -> Any
}
class UserDefaultsDataSource: DataSource {
  private let userDefaultsKey: String
  
  init(userDefaultsKey: String) {
      self.userDefaultsKey = userDefaultsKey
  }
  
  func writeData(_ data: Any) {
      UserDefaults.standard.set(data, forKey: userDefaultsKey)
  }
  
  func readData() -> Any {
      return UserDefaults.standard.value(forKey: userDefaultsKey)!
  }
}
// Decorators
class DataSourceDecorator: DataSource {
  let wrappee: DataSource
  
  init(wrappee: DataSource) {
      self.wrappee = wrappee
  }
  
  func writeData(_ data: Any) {
      wrappee.writeData(data)
  }
  
  func readData() -> Any {
      return wrappee.readData()
  }
}
class EncodingDecorator: DataSourceDecorator {
  private let encoding: String.Encoding
  
  init(wrappee: DataSource, encoding: String.Encoding) {
      self.encoding = encoding
      super.init(wrappee: wrappee)
  }
  
  override func writeData(_ data: Any) {
      let stringData = (data as! String).data(using: encoding)!
      wrappee.writeData(stringData)
  }
  
  override func readData() -> Any {
      let data = wrappee.readData() as! Data
      return String(data: data, encoding: encoding)!
  }
}
class EncryptionDecorator: DataSourceDecorator {
  private let encryptionKey: String
  
  init(wrappee: DataSource, encryptionKey: String) {
      self.encryptionKey = encryptionKey
      super.init(wrappee: wrappee)
  }
  
  override func writeData(_ data: Any) {
      let encryptedString = encryptString(data as! String, with: encryptionKey)
      wrappee.writeData(encryptedString)
  }
  
  override func readData() -> Any {
      let encryptedString = wrappee.readData() as! String
      return decryptString(encryptedString, with: encryptionKey)
  }
}
// Usage
var source: DataSource = UserDefaultsDataSource(userDefaultsKey: “decorator”)
source = EncodingDecorator(wrappee: source, encoding: .utf8)
source = EncryptionDecorator(wrappee: source, encryptionKey: “secret”)
source.writeData(“Design Patterns”)
source.readData() as! String
// Result:
// Design Patterns

-source by github

# 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 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. 

When should you use the Observer design pattern?

You should use these Swift design patterns:

  • When you have lots of objects which rely on another object 
  • When your objects are required to act when the state of that object changes
  • When an object needs to notify others without knowing who they are

# 10 – Delegate 

This Swift design pattern for iOS apps is meant for keeping implementation-specific behavior away from the generic class. Several user interface components in iOS use delegates to control their behavior. 

When should you use the Delegate pattern for iOS apps?

You can use this design pattern:

  • When you need to reduce the coupling of methods to their class
  • When you have elements that behave identically but realize that this situation can change in the future.

Example: 

UIScrollView. This class is an app-specific task, so there is no knowledge of scrolling. That’s why it uses UIScrollViewDelegate to notify the app of scrolling events. The app can implement the delegate and then head off the scrolling events sent to it by the UIScrollView. 


Let’s know the advantages of Swift design patterns for iOS apps:

What Are The Benefits Of Swift Design Patterns For iOS App Development?

Here are three Swift iOS app development business benefits:

#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 patterns for iOS apps. 

As per Flutter vs Swift’s comparison, the latter one demands no mandated 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, errors while coding, or structuring the application. 

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

#3 – Tested Solutions

Pre-designed Swift design patterns 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 and making them error-free, these Swift design patterns can be reused for saving time and more effectiveness. 

Popular iOS Apps Developed By Using Swift Design Pattern

ios apps developed by using swift design pattern

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 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 apps

So, these top ten Swift design patterns are mostly used for developing iOS apps. You can pick the right pattern in Swift that’s relevant to build a project that allows you to build fully functional and secure apps that are easy to maintain and update. You should have design patterns in your knowledge as they not only simplify software development but also optimize the complete process and ensure high code quality. But, make sure you hire a dedicated mobile app development company such as Appventurez if you don’t have any idea about the right Swift design pattern for your iOS apps. 

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

At Appventurez, we strongly recommend you to 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, 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.

Frequently Asked Questions:

Q.1- What are the iOS design patterns?

Design patterns are reusable solutions to common issues in iOS app design and development. There are templates you can use to write code that’s easy to understand and reuse. With patterns, you can create loose coupling code to modify or replace elements in your code without any hassle.

Q.2- What apps are developed by using Swift design patterns?

Here are the most popular mobile apps built by using Swift design patterns such as Uber, HubSpot, LinkedIn, Airbnb and Lyft. 

Ashish Chauhan
Ashish Chauhan

Co-Founder and VP Mobile Architect at Appventurez. An expert programmer who is passionate and loves to explore emerging mobile technologies. As a leader, he is a perfect match as he is always there for the team to help and guide them to learn and implement smartly and effectively.

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