GetX in Flutter

Abhishek Rathore

11 December 2023

Before starting our blog topic GetX In Flutter, let’s discuss GetX. What is GetX and why do we need it in the flutter?

It is basically an extra-light flutter framework, which can be used for State Management, Dependency Management, and Navigation Management. GetX works on 3 principles:

PRODUCTIVITY,
PERFORMANCE, and
ORGANIZATION.

Let’s start the implementation of the GetX in our Flutter project and get to know what features it provides to enhance the coding practice and code optimization.

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1. Adding the Get dependency in the “pubspec. yaml”

I have used the following version dependency, you can use any version as per your requirement from the Flutter Dev console.

get: ^4.1.4

1	get: ^4.1.4

2. Import get in files that it will be used

You have to import this package into your dart class:

import 'package:get/get.dart';

1	import 'package:get/get.dart';

Now, let’s check what features we can implement with the help of GetX in the flutter by writing a minimal number of code with better secure logic.

1. Navigate to a new screen:

Before the Get package, we are using the Navigator class and its push-and-pop methods for navigating to a new screen or returning from it.

But with the help of the GetX package, we can do it easily.

> Convert MaterialApp into the GetMaterialApp before proceeding

GetMaterialApp(
      title: 'GetX Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: ''),
    )

GetMaterialApp(

title: 'GetX Demo',

theme: ThemeData(

primarySwatch: Colors.blue,

home: MyHomePage(title: ''),

)

> Redirecting to the next screen (ScreenB in my case)

Get.to(Screenb());

1	Get.to(Screenb());

> Navigating to the screen with the name

Get.toNamed('/screenb');

1	Get.toNamed('/screenb');

> Getting back from any screen

Get.back();

1	Get.back();

> Navigating to the new screen by killing all the previous screens, we can use the following method:

Get.offAll(ScreenB());

1	Get.offAll(ScreenB());

2. State Management

For managing the state in a flutter, GetX has two different state managers, the simple state manager (we’ll call it GetBuilder) and the reactive state manager (GetX/Obx).

GetX turns reactive programming into a simple way. Let’s demonstrate with an example:

1. I have created a model class called User in which I have defined a variable name

class User {
  String name = "";
}

class User {

String name = "";

}

2. Define the controller for it.

class Controller extends GetxController {
  Controller();
  final user = User().obs;
}

class Controller extends GetxController {

Controller();

final user = User().obs;

}

3. Then in the widget where you want to update the changes in the value, you can use the following function for it:

Obx(() =&gt; Text(c.user.value.name))

1	Obx(() => Text(c.user.value.name))

Conclusion

There are many uses of the GetX in Flutter which make the code simpler and easy to use with a minimal line of codes. You can use this package as per your need.

I hope this blog helps you to understand the basic uses of the GetX in Flutter.

Thank you for reading!!

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