![]() ![]() It provides many constructors for loading image, which are given below: This widget holds the image which can fetch it from multiple sources like from the asset folder or directly from the URL. In the above example, the onPressed property allows us to perform an action when you click the button, and elevation property is used to change how much it stands out. We can create the Flutter widget like this: The below image is a simple visual representation of the widget tree. For example, a widget can display something, can define design, can handle interaction, etc. It means the root of your app is itself a widget, and all the way down is a widget also. Widgets are nested with each other to build the app. When you made any alteration in the code, the widget rebuilds its description by calculating the difference of previous and current widget to determine the minimal changes for rendering in UI of the app. It describes how your app view should look like with their current configuration and state. The central purpose is to build the app out of widgets. Whenever you are going to code for building anything in Flutter, it will be inside a widget. If you are familiar with React or Vue.js, then it is easy to understand the Flutter. We have learned earlier that everything in Flutter is a widget. Inside your mason.yaml file, add the brick name and the GitHub repository link.In this section, we are going to learn the concept of a widget, how to create it, and their different types available in the Flutter framework. You can also use bricks directly from GitHub repositories. Congratulations, you have generated a Flutter widget using bricks and the Mason CLI. Then provide all the variables you have defined in the bricks.yaml file. To generate a file using our widget brick with the Mason CLI, run the mason make widget command. Now use the mason make command to generate files in the current working directory. First, run mason list to list all the available bricks. Now that we have successfully created and registered our brick, let’s start using it to generate files using the Mason CLI. Your widget brick is now ready to generate stateless or stateful widgets on demand using the Mason CLI. Let’s run the mason get command to register all the bricks from the nearest mason.yaml file. I will also add an appbar inside the scaffold and use the filename variable as an appbar title. (If you’re not familiar with the Mustache syntax and want some detailed information, take a look here.) To define a variable, you can use the syntax to convert the filename variable into Pascal case. A primer on mustache syntaxīricks use the Mustache syntax to add variables and conditionals in your file. You can also create a brick for unit tests and generate multiple test files in one go using the power of the Mason CLI and bricks. If you are familiar with Flutter unit testing and widget testing, you know that the basic structure of all the tests is the same. You can also use variables and conditionals in these templates to give each page a different name and structure.Īnother common use of bricks is generating test files. But using bricks, you can write a template Flutter page and generate new pages on the fly. ![]() Normally, if your Flutter project needs multiple pages, you have to write the same repetitive code multiple times. A page in your Flutter app may be stateful or stateless depending on its reactivity to the state change, and in general, each page contains a scaffold and an appbar. Let’s learn about bricks and Mason with a simple example. Therefore, you should have Dart installed on your computer before you install the Mason CLI. Mason is written in the Dart programming language. You can now play with it live in your browser. What you’ll learn in this tutorialĪt the end of this tutorial, you’ll learn how to:Įxcited? Make sure to follow the tutorial to the end to get a complete picture of bricks and Mason.īelow, you can find the complete Mason sample project. ![]() Mason can be very useful in larger projects, as it provides a definite guideline to developers and helps maintain consistency in code. Once brick templates are defined, developers use the Mason CLI to create, manage, and generate new files from these bricks. A brick can be a file or a collection of nested files and directories. These reusable templates are called bricks. It is used to generate files and directories from predefined templates to enhance developer productivity. Mason is an open-source template generator created by Felix Angelov from Very Good Ventures. Alternatively, you can use bricks made by others from GitHub or v. You can use Mason in your Flutter projects by first creating and registering the templates (aka bricks) and then utilizing them to create files and folders. ![]() TL DR: Mason is a Dart package that allows you to create files and directories based on templates. This post is written by Hrishikesh Pathak ![]()
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