![]() Here’s what your app’s user interface (UI) will look like: main_learning.dart: You’ll use this file to show the basics of drawing simple shapes on the Canvas.This class contains the logic to draw DrawnLines on the screen. sketcher.dart: Sketcher is a class that extends CustomPainter and is used in combination with the CustomPaint to draw on the screen.Feel free to rename it, but be sure to change the rest of the code accordingly. “Path” might be a more relevent name for this class, but since it’s already a Flutter class, you use the name DrawnLine. You’ll use this class when drawing paths. Each path that is drawn contains a List of points on the screen ( List), a color ( Color) and a stroke width ( double). drawn_line.dart: This file is a simple model class DrawnLine for a typical path drawn on the screen.The drawing area, the save and clear buttons, the color toolbar and the stroke toolbar are all rendered inside DrawingPage. It renders the widgets that you saw in the app preview. drawing_page.dart: This file contains most of the code.This widget uses DrawingPage as the child. It contains a MyApp that contains MaterialApp. main.dart: This is the main file that acts as the entry point for the app.Here are a few files you’ll see in the starter project’s lib folder. To avoid problems, delete the test folder, which Flutter generated when you executed the flutter create. Next, download your dependencies by double-clicking pubspec.yaml on the left panel, then clicking pub get at the top of your screen. command in the starter folder to generate the android and ios folders. You can use Visual Studio Code instead, but if you do, you’ll need to tweak some instructions to follow along.Ĭlick Open an existing Android Studio project and choose the starter folder from your unzipped download. ![]() Unzip the downloaded file and open it with Android Studio 4.1 or later. To learn more about Flutter from scratch, check out the Flutter Apprentice book.ĭownload the starter project by clicking the Download Materials button at the top or bottom of the tutorial. If you want to learn how to draw basic shapes in Flutter, have a look at Drawing Custom Shapes with CustomPaint in Flutter tutorial. Note: This article assumes that you know the basics of the Flutter framework, including common widgets and their properties.
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