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Discover how to set up automatic formatting for `.dart` files in VSCode when working with Flutter, ensuring proper indentation, spacing, and syntax.
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This video is based on the question https://stackoverflow.com/q/67380534/ asked by the user 'Marko Marchisio' ( https://stackoverflow.com/u/10261928/ ) and on the answer https://stackoverflow.com/a/67407367/ provided by the user 'Danny Tuppeny' ( https://stackoverflow.com/u/25124/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Properly Format .dart Files in Visual Studio Code for Flutter Development

When diving into Flutter development, having clean and well-formatted .dart files is essential for maintaining an organized codebase. However, many developers struggle with setting up automatic formatting in Visual Studio Code (VSCode). If you're encountering issues where your code isn't being formatted automatically, you're not alone. In this guide, we'll walk through how to set up proper formatting for your Flutter project to ensure a smooth coding experience.

Common Formatting Issues

Some common pain points when it comes to formatting .dart files include:

Automatic formatting not occurring on save

Missing semicolons (;) and commas (,) at the end of lines

Inconsistencies in spacing and indentation

If any of these sound familiar to you, fear not—there's a solution!

Understanding Your Current Settings

First things first, let's take a look at your current settings.json file in VSCode. This configuration file controls many aspects of your coding environment, including how files are formatted. Based on your provided settings.json, it seems you have the Dart and Flutter extensions installed, but the formatting settings may need a bit of tweaking.

Here's a Sample of Your Current Settings:

[[See Video to Reveal this Text or Code Snippet]]

Step-by-Step Solution

To resolve your formatting issues, follow these steps:

1. Change Default Formatter for Dart

The Dart extension is what handles the automatic formatting for your .dart files. However, your current setting uses Dart-Code.flutter as the default formatter, which may not be the optimal choice. Instead, you should set it to Dart-Code.dart-code.

Change this line in your settings.json:

[[See Video to Reveal this Text or Code Snippet]]

to:

[[See Video to Reveal this Text or Code Snippet]]

2. Ensure Format on Save is Enabled

Make sure that you have editor.formatOnSave set to true not only globally but also specifically for Dart files. It appears you have this set correctly, so you should be good here.

3. Check Additional Formatting Settings

To further enhance your formatting, ensure you have the following settings in your [dart] scope in the settings.json:

[[See Video to Reveal this Text or Code Snippet]]

4. Save and Test

After making these changes, save your settings.json and restart VSCode. Now, try editing a .dart file and see if it formats correctly! Test the following:

Adding new lines and checking for automatic semi-colons and commas

Inserting code and checking for proper indentation

Conclusion

Setting up formatting for .dart files in VSCode is crucial for a productive Flutter development experience. By following the steps outlined above, you should be able to resolve your formatting issues and enjoy a cleaner, more structured codebase. If the problems persist, ensure that your Dart and Flutter extensions are up to date or try reinstalling them.

With the right configurations in place, you'll find that maintaining a well-formatted codebase becomes a breeze, allowing you to focus more on building amazing applications with Flutter! Happy coding!