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<topic_end>
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<topic_start>
|
What is inside the Flutter SDK?
|
Flutter includes:<topic_end>
|
<topic_start>
|
Does Flutter work with any editors or IDEs?
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We provide plugins for VS Code,
|
Android Studio, and IntelliJ IDEA.
|
See editor configuration for setup details,
|
and VS Code and Android Studio/IntelliJ
|
for tips on how to use the plugins.Alternatively, you can use the flutter command
|
from a terminal, along with one
|
of the many editors that support editing Dart.<topic_end>
|
<topic_start>
|
Does Flutter come with a framework?
|
Yes! Flutter ships with a modern react-style framework.
|
Flutter’s framework is designed to be layered and
|
customizable (and optional). Developers can choose to
|
use only parts of the framework, or even replace
|
upper layers of the framework entirely.<topic_end>
|
<topic_start>
|
Does Flutter come with widgets?
|
Yes! Flutter ships with a set of
|
high-quality Material Design and Cupertino
|
(iOS-style) widgets, layouts, and themes.
|
Of course, these widgets are only a starting point.
|
Flutter is designed to make it easy to create your own
|
widgets, or customize the existing widgets.<topic_end>
|
<topic_start>
|
Does Flutter support Material Design?
|
Yes! The Flutter and Material teams collaborate closely,
|
and Material is fully supported. For more information,
|
check out the Material 2 and Material 3 widgets
|
in the widget catalog.<topic_end>
|
<topic_start>
|
Does Flutter come with a testing framework?
|
Yes, Flutter provides APIs for writing unit and
|
integration tests. Learn more about testing with Flutter.We use our own testing capabilities to test our SDK,
|
and we measure our test coverage on every commit.<topic_end>
|
<topic_start>
|
Does Flutter come with debugging tools?
|
Yes, Flutter comes with Flutter DevTools (also
|
called Dart DevTools). For more information, see
|
Debugging with Flutter and the Flutter DevTools docs.<topic_end>
|
<topic_start>
|
Does Flutter come with a dependency injection framework?
|
We don’t ship with an opinionated solution,
|
but there are a variety of packages that offer
|
dependency injection and service location,
|
such as injectable, get_it, kiwi, and riverpod.<topic_end>
|
<topic_start>
|
Technology
|
<topic_end>
|
<topic_start>
|
What technology is Flutter built with?
|
Flutter is built with C, C++, Dart,
|
Skia (a 2D rendering engine),
|
and Impeller (the default rendering engine on iOS).
|
See this architecture diagram
|
for a better picture of the main components.
|
For a more detailed description of the layered architecture
|
of Flutter, read the architectural overview.<topic_end>
|
<topic_start>
|
How does Flutter run my code on Android?
|
The engine’s C and C++ code are compiled with Android’s NDK.
|
The Dart code (both the SDK’s and yours)
|
are ahead-of-time (AOT) compiled into native, ARM, and x86
|
libraries. Those libraries are included in a “runner”
|
Android project, and the whole thing is built into an .apk.
|
When launched, the app loads the Flutter library.
|
Any rendering, input, or event handling, and so on,
|
is delegated to the compiled Flutter and app code.
|
This is similar to the way many game engines work.During debug mode, Flutter uses a virtual machine (VM)
|
to run its code in order to enable stateful hot reload,
|
a feature that lets you make changes to your running code
|
without recompilation. You’ll see a “debug” banner in
|
the top right-hand corner of your app when running in this mode,
|
to remind you that performance is not characteristic of
|
the finished release app.<topic_end>
|
<topic_start>
|
How does Flutter run my code on iOS?
|
The engine’s C and C++ code are compiled with LLVM.
|
The Dart code (both the SDK’s and yours)
|
are ahead-of-time (AOT) compiled into a native, ARM library.
|
That library is included in a “runner” iOS project,
|
and the whole thing is built into an .ipa.
|
When launched, the app loads the Flutter library.
|
Any rendering, input or event handling, and so on,
|
are delegated to the compiled Flutter and app code.
|
This is similar to the way many game engines work.During debug mode, Flutter uses a virtual machine (VM)
|
to run its code in order to enable stateful hot reload,
|
a feature that lets you make changes to your
|
running code without recompilation. You’ll see
|
a “debug” banner in the top right-hand corner of
|
your app when running in this mode, to remind you that
|
performance is not characteristic of the finished release app.<topic_end>
|
<topic_start>
|
Does Flutter use my operating system’s built-in platform widgets?
|
No. Instead, Flutter provides a set of widgets
|
(including Material Design and Cupertino (iOS-styled) widgets),
|
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