1st Step: Create new Flutter Project; 2nd Step: Add Get dependencie; 3rd Step: Create new Dart file in lib; 4th Step: Under main.dart file; 5th Step: Create a new dart Page; Flutter State Management using GetX – Firebase firestore Example 2 We will then run the project to make sure it’s working alright (Make sure you have either a device connected or an emulator/simulator running). Example? If you favor simplicity and being efficient in building out features and ideas, in Flutter then the Get package will interest you. You can see how in one line of code we have a working alert dialog. What we are going to do is to implement the very same counter application but with GetX to manage the state of the app (which is the count variable). It does this by providing a GetxController class which you can inherit to create controller classes for the views of your application. These boilerplates tend to slow down the development efficiency of developers trying to go about building features and meeting their deadlines. Flutter offers a rich set of Material widgets. Now when the value of count changes, any part of our application using it will be updated automatically. example project A little note before you start to read. GetX Flutter Firebase Auth Example - Article by Jeff McMorris. If you favor simplicity and being efficient in building out features and ideas, in Flutter then the Get package will interest you. If we have single controller as a dependency then we can use GetView instead of StatelessWidget and avoid writing Get.find(). mandatory: a method that will be executed when your class is called for the first time InstanceBuilderCallback builder. GetX Important Points In Flutter : GetInstance ().put (controller, tag: widget.tag); GetInstance ().find (tag: widget.tag); instance: isRegistered, delete, reset, lazyPut, putAsync, put, create. It provides features allowing the developer to build a truly beautiful UI experience for their users. For example: Anywhere context need to call the method Get.context(). It’s a good idea to have a uses-material-design: true entry in the flutter section of your pubspec.yaml file. Facilitate the search for information and dissemination of knowledge. So the above declaration will now look like this: This is how our controller file looks like at the moment: To wrap things up with the MyHomePageController we will implement the increment method. GetService and controller different only remove memory related. 3) Get.put(tag: ‘any name, permanent: true): 5) Get.putAsync:If you want to register an asynchronous instance, you can use `Get.putAsync`: Get.delete(); usually you don’t need to do this because GetX already delete unused controllers. We'll learn about asynchronous programming and how Dart deals with async operations either using the async/await keywords or the Future API.. You will not need to create a get for an initial value. GetX provides a class called GetxController which extends DisposableInterface. When update data method call onUpdate(). GetX is not a bloated. You will also notice our view doesn’t hold or maintain any state so it can be a stateless widget. The brain of the view in turn is now a controller class that will hold the state for the view and methods. GetService remove memory app close. obs is observable get or listing the update the data without refresh entries page. GetX provides i18n out of the box allowing you to write applications with various language support. After you create it, add the following code snippet to it: Now we have the MyHomePage widget, let’s import it in main.dart. You won’t need to create a StreamBuilder for each variable. We write the business logic in controller after create instance of controller inside our UI after create instance we use variable and method controller. [Examples] Simple basic isolated apps, for budding flutter devs. The standard Flutter counter has almost 100 lines, it would be summarized to: on main.dart. Flutter is a cross-platform framework, which means that it is and always will be a "second-class citizen." There is no buffering, to very low memory consumption. It is similar to ‘permanent’ the difference is that the instance is discarded when is not being use, but when it is use is needed again, Get will recreate the instance. Let’s change the title and the message: Save and run your app and you will see the changes when you hit the “Show AlertDialog” button. GetWidget is a great way of quickly access your individual Controller. Write CSS OR LESS and hit save. The above examples are some of the ways where application development in Flutter can be improved to be more intuitive and efficient with less boilerplate. For our count application we want the Text widget to be updated with the current count. for example: class MyApp extends GetView. Common utility provide the GetX like validation, media query, no need to context navigation, change theme, change language, http etc. GetX is a micro-framework that makes Flutter development very easy. This example creates a Material app. While Flutter enjoys the benefit of letting the developers create beautiful apps with a single yet elegant code base, it comes with a price. So we will create two directories inside lib/. GetX automatically remove the resources from memory. ?= GetInstance. We did this because adding .obs to a variable makes it an observable variable and to get the value of an observable variable, you do so from the value property. Head over to the install page for GetX on pub.dev and you will see the line of code to copy to place in your pubspec.yml file to install GetX. you will have to write: It would be more efficient and developer-friendly to do something like: When you need to navigate back to the previous page in Flutter you will have to write: You will notice we are always depending on context property for something as commonplace as navigating between screens. // To install: pub global activate get_cli // To create a flutter project in the current directory: // Note: By default it will take the folder's name as project name // You can name the project with `get create project:my_project` // ..Read more Flutter GetX Tutorial - State Management using GetBuilder. Let’s customize it a bit. Obx (Stream builder): reactive approx., continues listing data, code reduce. Business logic is separated from UI, and even dependencies can be separated using something called Bindings. To hold all controllers for the screens in our application. num_extensions: isLowerThan, isGreaterThan, isEqual, milliseconds, seconds, minutes, hours, days, string_extensions: isNum, isNumericOnly, isAlphabetOnly, isBool, isVectorFileName, isImageFileName, isAudioFileName, isVideoFileName, isTxtFileName, isDocumentFileName, isExcelFileName, isPPTFileName, isAPKFileName, isPDFFileName,isHTMLFileName, isURL, isEmail, isPhoneNumber, isDateTime, isMD5, isSHA1, isSHA256, isBinary, isIPv4, isIPv6, isHexadecimal, isPalindrom, isPassport, isCurrency, isCpf, isCnpj, isCaseInsensitiveContains, isCaseInsensitiveContainsAny, capitalize, capitalizeFirst, removeAllWhitespace, camelCase, numericOnly, widget_extensions: WidgetPaddingX, WidgetMarginX, WidgetSliverBoxX. ... Let’s get started with the help of an example app. Official CLI for the GetX™ framework. But you will notice when you click the button again, the counter won’t be updated. GetBuilder is called state. Inside the onPressed handler function add the below line of code: Run your application and when you click on the “Show Snackbar button” you will see a snackbar on top of your application! Get or GetX is a fast, stable, extra-light framework for building Flutter applications. Ads This CLI is in Beta stage, use with caution. To activate the Navigation feature of GetX, you only need to make one change in main.dart which is to turn the MaterialApp widget to a GetMaterialApp widget. Update the code to this: Overall, the button code should look like this: GetX provides a simple method for creating AlertDialog in Flutter. I am assuming your machine is already set up for application development with Flutter. jsonexample. Let’s see it in action. We don’t have to manually dispose anything and the memory consumption is reduced, resulting in high performance. GetX aims to minimize boilerplates while also providing simple and intuitive syntax for developers to use while building their applications. The dependencies section of your pubspec.yml file should look like this: We have mentioned that GetX allows you to separate the UI of your application from the logic. In order to improve response time and reduce RAM consumption, we created GetValue and GetStream, which are low latency solutions that deliver a lot of performance, at a low operating cost. Instance create: Get.create ( () => CountController ()); extend GetWidget: MyApp extends GetWidget. Flutter State Management using GetX – Example 1. SQLite is a SQL engine used in mobile devices and some computers. GetX provides a combination of State Management, Dependency Injection and Route Management solutions that work great together. As of the time of writing this article, the current version of GetX is 3.23.1. Just like full, it will remove its dependencies when it’s not being used anymore. 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