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You need to manually enable the extension before it loads for the first time. |
Make sure the extension is provided by a source you trust before enabling it.Extension enablement states are stored in a devtools_options.yaml file in the |
root of the user’s project (similar to analysis_options.yaml). This file |
stores per-project (or optionally, per user) settings for DevTools.If this file is checked into source control, the specified options are |
configured for the project. This means that anyone who pulls a project’s |
source code and works on the project uses the same settings.If this file is omitted from source control, for example by adding |
devtools_options.yaml as an entry in the .gitignore file, then the specified |
options are configured separately for each user. Since each user or |
contributor to the project uses a local copy of the devtools_options.yaml |
file in this case, the specified options might differ between project contributors.<topic_end> |
<topic_start> |
Build a DevTools extension |
For an in-depth guide on how to build a DevTools extension, check out |
Dart and Flutter DevTools extensions, a free article on Medium. |
<topic_end> |
<topic_start>DevTools release notes |
This page summarizes the changes in official stable releases of DevTools. |
To view a complete list of changes, check out the |
DevTools git log.The Dart and Flutter SDKs include DevTools. |
To check your current version of DevTools, |
run the following on your command line:<topic_end> |
<topic_start>Release notes |
<topic_end> |
<topic_start>Flutter SDK overview |
The Flutter SDK has the packages and command-line tools that you need to develop |
Flutter apps across platforms. To get the Flutter SDK, see Install.<topic_end> |
<topic_start> |
What’s in the Flutter SDK |
The following is available through the Flutter SDK:Note: For more information about the Flutter SDK, see its |
README file.<topic_end> |
<topic_start> |
flutter command-line tool |
The flutter CLI tool (flutter/bin/flutter) is how developers |
(or IDEs on behalf of developers) interact with Flutter.<topic_end> |
<topic_start> |
dart command-line tool |
The dart CLI tool is available with the Flutter SDK at flutter/bin/dart. |
<topic_end> |
<topic_start>Flutter and the pubspec file |
info Note |
This page is primarily aimed at folks who write |
Flutter apps. If you write packages or plugins, |
(perhaps you want to create a federated plugin), |
you should check out the |
Developing packages and plugins page.Every Flutter project includes a pubspec.yaml file, |
often referred to as the pubspec. |
A basic pubspec is generated when you create |
a new Flutter project. It’s located at the top |
of the project tree and contains metadata about |
the project that the Dart and Flutter tooling |
needs to know. The pubspec is written in |
YAML, which is human readable, but be aware |
that white space (tabs v spaces) matters.The pubspec file specifies dependencies |
that the project requires, such as particular packages |
(and their versions), fonts, or image files. |
It also specifies other requirements, such as |
dependencies on developer packages (like |
testing or mocking packages), or particular |
constraints on the version of the Flutter SDK.Fields common to both Dart and Flutter projects |
are described in the pubspec file on dart.dev. |
This page lists Flutter-specific fields |
that are only valid for a Flutter project.info Note |
The first time you build your project, it |
creates a pubspec.lock file that contains |
specific versions of the included packages. |
This ensures that you get the same version |
the next time the project is built.When you create a new project with the |
flutter create command (or by using the |
equivalent button in your IDE), it creates |
a pubspec for a basic Flutter app.Here is an example of a Flutter project pubspec file. |
The Flutter only fields are highlighted.<topic_end> |
<topic_start> |
Assets |
Common types of assets include static data |
(for example, JSON files), configuration files, |
icons, and images (JPEG, WebP, GIF, |
animated WebP/GIF, PNG, BMP, and WBMP).Besides listing the images that are included in the |
app package, an image asset can also refer to one or more |
resolution-specific “variants”. For more information, |
see the resolution aware section of the |
Assets and images page. |
For information on adding assets from package |
dependencies, see the |
asset images in package dependencies |
section in the same page.<topic_end> |
<topic_start> |
Fonts |
As shown in the above example, |
each entry in the fonts section should have a |
family key with the font family name, |
and a fonts key with a list specifying the |
asset and other descriptors for the font.For examples of using fonts |
see the Use a custom font and |
Export fonts from a package recipes in the |
Flutter cookbook.<topic_end> |
<topic_start> |
More information |
For more information on packages, plugins, |
and pubspec files, see the following: |
<topic_end> |
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