With the Adapter design, you make a go between two contrary class interfaces, permitting one to work with the other. This works a lot like actual adapters, in reality, for example, those that join a power line to empower a device to draw power from an unfamiliar power outlet.

Or on the other hand, those that empower you to peruse data from one type of memory card in a drive made for another type or size. The intermediary class examples of genuine greatness as a scaffold between your client code and another class. You could likewise imagine the adapter class as a wrapper around an object of another class.

In this blog, we’ll explore Adapter Design Patterns For Dart & Flutter. We will perceive how to execute a demo program. Learn how to use it in your flutter applications.

Table Of Contents::

Introduction

General Adapter Pattern

Advanced Adapter Pattern

Conclusion

Introduction:

Designs assist us with molding the connections between the objects and classes we make. These patterns are centered around how classes acquire from one another, how items can be made out of different objects, and how objects and classes interrelate.

The patterns help us in making adaptable, inexactly coupled, interconnecting code modules to get done in a complex sensible manner. There are two unique Adapter designs. The first is known as the Class Adapter pattern, however, it depends on different inheritances, a component Dart doesn’t uphold.

Class Adapter utilizes inheritance to adjust one connection point to another, a method that is dropping off the favor for composition. Thus, we’ll focus on the Object Adapter design, which is completely upheld in Dart, and it’s the most impressive and adaptable of the two methodologies.

General Adapter Pattern:

Envision you’re assembling an application that requirements to utilize a more established shape library for delivering shapes on the screen. In this library, squares are characterized by determining their 2D position, alongside width and height. In your application, it would be more helpful to have the option to make squares from four directions all things being equal.

You can utilize the Adapter example to make a covering around the library’s square class. The adapter will take your application’s favored contentions and naturally adjust them for use with the square class.

How about we perceive how it’s finished:

class Square {
  final int x;
  final int y;
  final int width;
  final int height;

  const Square(this.x, this.y, this.width, this.height);

  void render() {
    print("Rendering Square...");
  }
}

class NewSquare {
  Square _square;

NewSquare(int left, int top, int right, int bottom) {
    _square = Square(left, top, right - left, bottom - top);
  }

void render() => _square.render();
}

In this model, the NewSquare class is the adapter, wrapping a confidential instance of Square. A client can utilize NewSquare, passing the kinds of contentions it views as helpful, and NewSquare will adjust the input to the requirements of Square.

At the point when the client considers the NewSquare class’ render() strategy, the call is undetectably diverted to the one in Square. On the off chance that these were genuine illustration classes, delivering either form would create an indistinguishable square shape on the screen, however through various points of interaction.

Note: The Adapter design is frequently implemented with an explicit point of interaction for the wrapper, however, I’ve avoided that with regard to this model. Dart doesn’t uphold explicit connection points, since each class implicitly sends out a connection point.

Advanced Adapter Pattern:

In this model, we’ll profess to make an application that totals social entertainment posts from different sites. These posts will come from a few divergent sources, each with its API and information format. We can utilize the Adapter example to keep things coordinated and disguise the intricacy inborn in supporting numerous conventions.

In the first place, we should check our MediaPost model out:

class MediaPost {
  final String title;
  final String content;

const MediaPost(this.title, this.content);
}

This straightforward model characterizes properties to hold a title and some sort of text content. The constructor just sets those properties from passed contentions. Regardless of where posts come from, the application needs them to wind up in this arrangement.

Then, the following are two mock APIs for recovering mediaPosts:

class MediaApi1 {
  String getMedia1Posts() {
    return '[{"headline": "Title1", "text": "text..."}]';
  }
}

class MediaApi2 {
  String getMedia2Posts() {
    return '[{"header": "Title1", "body": "text..."}]';
  }
}

Note that every API has an alternate technique for getting media posts, and although the two of them return content in JSON design, the property names vary. In a genuine application, the techniques might take various contentions to carry out their roles, and clearly, they would as a rule return significantly more satisfied.

To accomplish this, we start by making a point of interaction:

abstract class MediaPostAPI {
  List<MediaPost> getMediaPosts();
}

As recently referenced, Dart has no help for explicit connection points, however since all classes trade their connection points, we can utilize a theoretical class to accomplish a comparative outcome. A theoretical class can’t be launched, and it can exclude executions for its techniques.

Presently, we can make adapter classes for every one of the different APIs, and they will carry out MediaPostAPI, guaranteeing they all have a reliable point of interaction to work with.

The adapter classes for the two mediaPost APIs follow:

import 'dart:convert';

class Media1Adapter implements MediaPostAPI {
  final api = MediaApi1();

List<MediaPost>getMediaPosts() {
    final ImgPosts = jsonDecode(api.getMedia1Posts()) as List;

return ImgPosts.map((mediaPost) =>
     MediaPost(mediaPost['headline'],             mediaPost['text'])).toList();
  }
}

class Media2Adapter implements MediaPostAPI {
  final api = MediaApi2();

List<MediaPost>getMediaPosts() {
    final ImgPosts = jsonDecode(api.getMedia2Posts()) as List;

return ImgPosts.map((mediaPost) =>
        MediaPost(mediaPost['header'], mediaPost['body'])).toList();
  }
}

Like the square adapter in the past segment, these connector classes wrap the two different post APIs to impact how client code associates with them. For this situation, they give admittance to the post content by executing MediaPostAPI, which commits them to characterize a getMediaPosts() technique with a mark that matches the point of interaction. Every connector typifies its particular API and calls the suitable API-explicit obtaining strategy in its execution of getMediaPosts().

JSON posts are changed over into MediaPost model objects with the map() technique and returned. Since the map() approach settles into a lazy Iterable, we want to call toList() to change over that into the List<MediaPost> that getMediaPosts() should return. It’s important to import dart:convertto get sufficiently close to the jsonDecode() capability.

final MediaPostAPI api1 = Media1Adapter();
final MediaPostAPI api2 = Media2Adapter();

final List<MediaPost> mediaPost = api1.getMediaPosts() + api2.getMediaPosts();

Since both adapter classes are ensured to have a similar point of interaction as MediaPostAPI, we can type API factors as MediaPostAPI. Presently it’s simple for client code to recover posts from all the APIs without stressing over the subtleties of each, and they’ll continuously return a rundown of MediaPost models reasonable for use in the application.

Conclusion:

I hope this blog will provide you with sufficient information on Trying up the Adapter Design Patterns For Dart & Flutter in your projects. The Adapter design is one of the most widely recognized and valuable standard design patterns.

It very well may be utilized to make a reliable point of interaction across numerous contrasting APIs or to wrap an item with a less favorable connection point to make it more viable or helpful for client code. The example can be beneficial when your application should communicate with APIs over which you have no control. So please try it.

❤ ❤ Thanks for reading this article ❤❤

If I got something wrong? Let me know in the comments. I would love to improve.

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From Our Parent Company Aeologic

Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.

Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.

Feel free to connect with us:
And read more articles from FlutterDevs.com.

FlutterDevs team of Flutter developers to build high-quality and functionally-rich apps. Hire a flutter developer for your cross-platform Flutter mobile app project on an hourly or full-time basis as per your requirement! You can connect with us on Facebook, GitHub, Twitter, and LinkedIn for any flutter-related queries.

We welcome feedback and hope that you share what you’re working on using #FlutterDevs. We truly enjoy seeing how you use Flutter to build beautiful, interactive web experiences.

The motivation behind the Builder design is to separate the construction of a complicated object from its representation. This is particularly valuable for objects with numerous properties, some of which might have clear defaults and some of which might be discretionary.

Early object-oriented languages didn’t have a syntax for making what is happening simple to make due, however, Dart, alongside most other fresher languages, has since added highlights that make the Builder design less favorable. All things considered, it merits inspecting both the exemplary example and the syntax that can make it superfluous.

In this blog, we’ll explore Builder Design Pattern For Dart & Flutter. We will perceive how to execute a demo program. We’ll initially realize what the Builder pattern is and why it can help in some object-oriented languages, then we’ll perceive the way Dart can utilize an easier form of the pattern to take care of similar issues. Knowing how to make incredible data models helps hugely when constructing Flutter applications, as well.

Table Of Contents::

Introduction

Generally Builder

Building Models — Dart

Conclusion

Introduction:

Builder pattern means to “Separate the construction of a complicated object from its portrayal so a similar construction interaction can make various portrayals.” It is utilized to build a complex object step by step and the last step will return the object. The method involved in constructing an object ought to be generic so making various portrayals of a similar object can be utilized.

The Builder design pattern moves the object development code out of its class to separate objects called builders. Every one of these builders follows a similar connection point and executes separate object development steps. That is, on the off chance that you need an alternate object’s portrayal, simply make an alternate builder class and execute these development steps correspondingly.

Likewise, there is one extra layer in the Builder design pattern— Director. The Director is a basic class that knows about the Builder interface and characterizes the request to execute the building steps. This class isn’t required, however, yet it conceals the subtleties of item development from the client code.

Generally Builder:

One of the most well-known instances of exhibiting the Builder design includes developing iceCream data models. There can be a stunning number of factors while purchasing iceCream, and in more established OOP dialects, that can make the model class abnormal to work with.

To save space here, our iceCream model will not have close to however many adjustable properties as a true model would need, and it will in any case introduce a few clear difficulties.

First, we should characterize a couple of enum types:

enum IceCramSize {
  S,
  M,
  L,
}

enum IceCreamType {
  none,
  cone,
  cup,
  brick,
}

enum IceCreamFlavors {
  chocolate,
  vanilla,
  strawberry,
}

Characterizing a discrete arrangement of legitimate values for model properties is an extraordinary method for diminishing bugs coming about because of invalid values and can make the code more self-reporting. That is an extravagant approach to saying that utilizing an enum for some settings is better than utilizing nonexclusive strings or numbers.

The iceCream model could begin something like this:

class IceCream {
  IceCramSize _size;
  IceCreamType _type;
  IceCreamFlavors _flavors;
  List<String> _toppings;
  bool _hasExtraCream;
  bool _hasDoubleChocolate;
  String _notes;
}

To safeguard the properties from outside obstruction, they’re all private, and that implies just code inside the library can get to them. We’ll have to set them either in constructors or setters.

Imagine IceCream has a default constructor that takes every property all together. Conjuring could seem to be the accompanying:

final iceCream = IceCream(
  IceCramSize.M,
  IceCreamType.cup,
  IceCreamFlavors.chocolate,
  ['oreos, caramel'],
  false,
  false,
  null,
);

The listed values and our organizing help, yet there’s still some clumsiness here. Positional constructor boundaries expect values to be passed, in any event, when we don’t require them. Imagine a scenario in which there were no toppings. We’d need to pass a vacant rundown or null for that contention.

Also, consider the possibility that you were attempting to store client decisions in the model as choices were being made. After a size was chosen, you’d need to make an Icecream and pass null for everything except the main boundary. This isn’t great. You can add setter techniques for each property, yet that would be no greater than unveiling them all, presented to inadvertent alteration by outside code.

We should take a gander at how that could change the methodology:

class IceCreamBuilder {
  IceCramSize size;
  IceCreamType type;
  IceCreamFlavors flavors;
  List<String> toppings;
  bool hasExtraCream;
  bool hasDoubleChocolate;
  String notes;
}

class IceCream {
  final IceCramSize size;
  final IceCreamType type;
  final IceCreamFlavors flavors;
  final List<String> toppings;
  final bool hasExtraCream;
  final bool hasDoubleChocolate;
  final String notes;

IceCream(IceCreamBuilder builder) :
        size = builder.size,
        type = builder.type,
        flavors = builder.flavors,
        toppings = builder.toppings,
        hasExtraCream = builder.hasExtraCream,
        hasDoubleChocolate = builder.hasDoubleChocolate,
        notes = builder.notes;
}

Presently the iceCream model is immutable, which is great, and there’s a mutable builder class we can use to assemble the last iceCream piecemeal. IceCream has just a single constructor, and it acknowledges an occasion of IceCreamBuilder. To construct an iceCream, we can benefit ourselves from the adaptability intrinsic in Dart’s outpouring operator:

final builder = IceCreamBuilder()
 ..size = IceCramSize.M
 ..type = IceCreamType.cup
 ..flavors = IceCreamFlavors.Chocolate
 ..toppings = ['oreos, caramel']
 ..hasExtraCream = false
 ..hasDoubleChocolate = false;

final iceCream = IceCream(builder);

Since IceCreamBuilder has public, mutable properties, it tends to be developed each property in turn, or with any mix of contentions, we have within reach. Any properties we don’t set will default to null, so they don’t need to be expressly allowed. The properties can be changed as a client makes determinations, and we end up with a protected, immutable IceCream.

Building Models — Dart:

To outdo all universes, you can utilize the immutability patterns. Here’s what utilizing those strategies could resemble with our iceCream model:

class IceCream {
  final IceCramSize size;
  final IceCreamType type;
  final IceCreamFlavors flavors;
  final List<String> toppings;
  final bool hasExtraCream;
  final bool hasDoubleChocolate;
  final String notes;

Icecream({
    this.size,
    this.type,
    this.flavors,
    this.toppings,
    this.hasExtraCream = false,
    this.hasDoubleChocolate = false,
    this.notes
  });

Icecream copyWith({
    IceCramSize size,
    IceCreamType type,
    IceCreamFlavors flavors,
    List<String> toppings,
    bool hasExtraCream,
    bool hasDoubleChocolate,
    String notes
  }) {
    return Icecream(
      size: size ?? this.size,
      type: type ?? this.type,
      flavors: flavors ?? this.flavors,
      toppings: toppings ?? this.toppings,
      hasExtraCream: hasExtraCream ?? this.hasExtraCream,
      hasDoubleChocolate: hasDoubleChocolate ?? this.hasDoubleChocolate,
      notes: notes ?? this.notes
    );
  }
}

Every one of the properties in this model is final, which holds them back from being suddenly changed, however, the copyWith() technique empowers you to make immutable copies of the model, just altering values that are passed into the strategy. You need to keep the properties and copyWith() boundaries in sync, however basically there’s not a separate builder class to keep up with.

Named parameters assist with keeping summons decipherable and allow us to characterize reasonable default values, model examples are immutable, and this rendition of the model has a manufacturer included as a component of its design, without any deficiency of the adaptability the Builder design exists to give.

Conclusion:

In the article, I have explained the basic structure of Builder Design Pattern For Dart & Flutter in a flutter; you can modify this code according to your choice. This was a small introduction to Builder Design Pattern For Dart & Flutter On User Interaction from my side, and it’s working using Flutter.

I hope this blog will provide you with sufficient information on Trying the Builder Design Pattern For Dart & Flutter in your projects. We’ve quite recently seen that the Builder pattern can be utilized to keep the details of constructing an object separated from its last portrayal. So please try it.

❤ ❤ Thanks for reading this article ❤❤

If I got something wrong? Let me know in the comments. I would love to improve.

Clap 👏 If this article helps you.

From Our Parent Company Aeologic

Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.

Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.

Feel free to connect with us:
And read more articles from FlutterDevs.com.

FlutterDevs team of Flutter developers to build high-quality and functionally-rich apps. Hire a flutter developer for your cross-platform Flutter mobile app project on an hourly or full-time basis as per your requirement! You can connect with us on Facebook, GitHub, Twitter, and LinkedIn for any flutter-related queries.

We welcome feedback and hope that you share what you’re working on using #FlutterDevs. We truly enjoy seeing how you use Flutter to build beautiful, interactive web experiences.

The Factory Method design, some of the time alluded to as the Virtual Constructor design, gives a method for covering an item’s creation rationale from client code, however, the item returned is ensured to stick to a known connection point. It’s one of the most broadly utilized creational designs since it adds a ton of adaptability to your article creation architecture without adding a lot of intricacies.

In this article, we’ll explore Factory Design Patterns For Dart and Flutter. We will perceive how to execute a demo program. Classic Factory Method model appearance how to deftly deliver objects addressing different shapes, then we’ll investigate how you can involve the example to make UI components for various stages in Flutter without any problem.

Table Of Contents ::

Classic Factory Method Model

Using Factory Method In Flutter

The Abstract Factory Method Pattern

Conclusion

Classic Factory Method Model:

Let’s begin with an excessively shortsighted, yet exemplary, model that will assist with making the Factory Method example’s structure understood. We’ll make a shape factory that supports creating a circle or a square shape. The accompanying chart outlines the essential components and connections:

The Shape class will go about as the factory and the connection point for the model, while Circle and Square are instances of substantial results of the production factory. The items execute the implement factory’s point of interaction, giving substantial executions of the draw() strategy.

How about we find out what it resembles as Dart code:

enum ShapeType {
  circle,
  square
}

abstract class Shape {
  factory Shape(ShapeType type) {
    switch (type) {
      case ShapeType.circle: return Circle();
      case ShapeType.square: return Square();
      default: return null;
    }
  }

  void draw();
}

class Circle implements Shape {
  @override
  void draw() {
    print("Circle");
  }
}

class Square implements Shape {
  @override
  void draw() {
    print("Square");
  }
}

Next comes the item factory, which for this situation appears as an abstract class called Shape. The shape has a factory constructor that goes about as the factory strategy for this example. It’s liable for making shapes of the mentioned type. The class is marked abstractconceptual to deny direct launch of Shape since the class has no execution for the draw() technique.

A switch proclamation is used to return the fitting substantial shape, returning null on the off chance that an invalid kind is passed in. The class closes with an unimplemented statement of a draw() strategy, present just to lay out a point of interaction that all shapes should execute.

The Circle and Square classes each carry out the Shape interface by superseding the draw() technique, as demonstrated by the @override metatag, which is discretionary but suggested as a type of self-documentation. The production line strategy in the Shape class can’t return a class that neglects to execute this connection point accurately.

Utilizing the factory could look something like the accompanying:

final shape1 = Shape(ShapeType.circle);
final shape2 = Shape(ShapeType.square);

shape1.draw();
shape2.draw();

Through the enchantment of polymorphism, the right adaptation of draw() for each shape will be called. Both shape1 and shape2 are of type Shape, however, one is a circle and the other is a square. It would be feasible to make a List<Shape> containing a blend of shape types, and the draw() strategy could be required each without the guest having to know every component’s actual kind.

Using Factory Method In Flutter:

One clear use for the Factory Method design in a Flutter application would produce locally styled UI components for various stages. For this model, we’ll make a platform-aware button factory that will return buttons for Android or iOS:

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';

abstract class PlatformButton {
  factory PlatformButton(TargetPlatform platform) {
    switch (platform) {
      case TargetPlatform.android: return ShowAndroidButton();
      case TargetPlatform.iOS: return ShowIosButton();
      default: return null;
    }
  }

  Widget build({
    @required BuildContext context,
    @required Widget child,
    @required VoidCallback onPressed
  });
}

As in the shapes model from the earlier segment, we make an abstract class to house the production line strategy. The industrial facility constructor of PlatformButton will return a case of a class that executes PlatformButton in light of the worth of its platform parameter.

The switch proclamation accomplishes crafted by returning a button example that matches the caller’s inclination. Note that ShowAndroidButton and ShowIosButton haven’t yet been made.

PlatformButton likewise incorporates an unimplemented statement for a build() strategy to lay out an assumption that practitioners will supersede it with a viable mark. The build() strategy takes the boundaries expected by the stage explicit button widgets.

Here are the implementations for ShowAndroidButton and ShowIosButton:

class ShowAndroidButton implements PlatformButton {
  @override
  Widget build({
    @required BuildContext context,
    @required Widget child,
    @required VoidCallback onPressed
  }) {
    return FlatButton(
      child: child,
      onPressed: onPressed,
    );
  }
}

class ShowIosButton implements PlatformButton {
  @override
  Widget build({
    @required BuildContext context,
    @required Widget child,
    @required VoidCallback onPressed
  }) {
    return CupertinoButton(
      child: child,
      onPressed: onPressed,
    );
  }
}

ShowAndroidButton and ShowIosButton carry out the connection point laid out by PlatformButton, and each class build() technique returns a button widget styled by those separate platforms. The child and onPressed arguments are given to those widgets.

Some place in the application, a PlatformButton factory line can be made this way:

PlatformButton(TargetPlatform.android)

Or on the other hand more probable, the stage would be distinguished powerfully by utilizing a Flutter Theme:

PlatformButton(Theme.of(context).platform)

Along these lines, every one of the buttons for an application could be consequently delivered in the style of the host stage, and the application’s build methods won’t be jumbled up by excess stage identification code.

What’s more, to build a button, you’ll have to call the build() strategy:

PlatformButton(Theme.of(context).platform).build(
  context: context,
  child: Text('My Button'),
  onPressed: () => print('Button pressed!'),
)

With just somewhat more code than a typical button launch, you can have a button utilizing Android’s Material Design style or one that utilizes the iOS look and feel, given the stage your Flutter application is executing on.

The Abstract Factory Method Pattern:

The Abstract Factory Method design is a superset of the Factory Method design. All things considered, a focal production line class handles those subtleties imperceptibly. The client need just give the sort of object required, and the abstract industrial factory figures out which object factory to start up, then it returns the proper item.

This extended model will uphold the production of various stage explicit UI widgets, so we’ll utilize the PlatformButton, ShowAndroidButton, and ShowIosButton classes from the Factory Method design model, and we’ll add equivalent help for switch widgets:

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';

abstract class PlatformSwitch {
  factory PlatformSwitch(TargetPlatform platform) {
    switch (platform) {
      case TargetPlatform.android: return ShowAndroidSwitch();
      case TargetPlatform.iOS: return ShowIosSwitch();
      default: return null;
    }
  }

  Widget build({
    @required BuildContext context,
    @required value,
    @required ValueChanged<bool> onChanged
  });
}

This code scrap will look recognizable to you if you’ve investigated the button creation code from the Factory Method design model. PlatformSwitch performs indistinguishably from PlatformButton, yet with switches.

Then, we really want classes for the two unique switches we’ll uphold. These are practically equivalent to their button partners from the Factory Method design model, with a couple of parameters adjusted:

class ShowAndroidSwitch implements PlatformSwitch {
  @override
  Widget build({
    @required BuildContext context,
    @required value,
    @required ValueChanged<bool> onChanged
  }) {

    PlatformButton(Theme.of(context).platform);
    return Switch(
      value: value,
      onChanged: onChanged,
    );
  }
}

class ShowIosSwitch implements PlatformSwitch {
  @override
  Widget build({
    @required BuildContext context,
    @required value,
    @required ValueChanged<bool> onChanged
  }) {
    return CupertinoSwitch(
      value: value,
      onChanged: onChanged,
    );
  }
}

Since we have factories for two UI controls set up, we can build an abstract factory class to deal with making the right version of every widget from a central widget factory:

class WidgetFactory {
  static Widget buildButton({
    @required BuildContext context,
    @required Widget child,
    @required VoidCallback onPressed
  }) {
    return PlatformButton(Theme.of(context).platform).build(
      context: context,
      child: child,
      onPressed: onPressed,
    );
  }

  static Widget buildSwitch({
    @required BuildContext context,
    @required value,
    @required ValueChanged<bool> onChanged
  }) {
    return PlatformSwitch(Theme.of(context).platform).build(
      context: context,
      value: value,
      onChanged: onChanged,
    );
  }
}

We make all the WidgetFactory strategies static to stay away from the need to start up it. With it, you can fabricate a button or a switch widget, and for each situation, you’ll get the rendition compared to the stage your application is running on. Luckily, WidgetFactory can decide the stage utilizing the BuildContext, so the client code doesn’t need to give it a different boundary.

The buildButton() technique utilizes the button production line class, PlatformButton, to make either an Android or iOS button, then, at that point, sends that button back to the caller. The buildSwitch() technique does likewise for switches. More techniques can be added to help with different controls.

To utilize the WidgetFactory, simply call one of the build techniques:

WidgetFactory.buildSwitch(
  context: context,
  value: myValue,
  onChanged: (bool value) => print(value),
)

As may be obvious, the Abstract Factory Method design enjoys a couple of upper hands over the Factory Method design. There’s somewhat more standard included, however, the client code is more limited and doesn’t have to expressly pass the stage identifier, since that can be recognized through the context.

Conclusion:

In the article, I have explained the basic structure of Factory Design Patterns For Dart and Flutter; you can modify this code according to your choice. This was a small introduction to Factory Design Patterns For Dart and Flutter On User Interaction from my side, and it’s working using Flutter.

I hope this blog will provide you with sufficient information on Trying up the Factory Design Patterns For Dart and Flutter in your projects. So please try it.

❤ ❤ Thanks for reading this article ❤❤

If I got something wrong? Let me know in the comments. I would love to improve.

Clap 👏 If this article helps you.

From Our Parent Company Aeologic

Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.

Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.

Feel free to connect with us:
And read more articles from FlutterDevs.com.

FlutterDevs team of Flutter developers to build high-quality and functionally-rich apps. Hire a flutter developer for your cross-platform Flutter mobile app project on an hourly or full-time basis as per your requirement! For any flutter-related queries, you can connect with us on Facebook, GitHub, Twitter, and LinkedIn.

We welcome feedback and hope that you share what you’re working on using #FlutterDevs. We truly enjoy seeing how you use Flutter to build beautiful, interactive web experiences.