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<topic_start> |
How it works |
When hot reload is invoked, the host machine looks |
at the edited code since the last compilation. |
The following libraries are recompiled:The source code from those libraries is compiled into |
kernel files and sent to the mobile device’s Dart VM.The Dart VM re-loads all libraries from the new kernel file. |
So far no code is re-executed.The hot reload mechanism then causes the Flutter framework |
to trigger a rebuild/re-layout/repaint of all existing |
widgets and render objects. |
<topic_end> |
<topic_start>FAQ |
<topic_end> |
<topic_start> |
Introduction |
This page collects some common questions asked about |
Flutter. You might also check out the following |
specialized FAQs:<topic_end> |
<topic_start> |
What is Flutter? |
Flutter is Google’s portable UI toolkit for crafting beautiful, |
natively compiled applications for mobile, web, |
and desktop from a single codebase. |
Flutter works with existing code, |
is used by developers and organizations around |
the world, and is free and open source.<topic_end> |
<topic_start> |
Who is Flutter for? |
For users, Flutter makes beautiful apps come to life.For developers, Flutter lowers the bar to entry for building apps. |
It speeds app development and reduces the cost and complexity |
of app production across platforms.For designers, Flutter provides a canvas for |
high-end user experiences. Fast Company described |
Flutter as one of the top design ideas of the decade for |
its ability to turn concepts into production code |
without the compromises imposed by typical frameworks. |
It also acts as a productive prototyping tool |
with drag-and-drop tools like FlutterFlow |
and web-based IDEs like Zapp!.For engineering managers and businesses, |
Flutter allows the unification of app |
developers into a single mobile, web, |
and desktop app team, building branded |
apps for multiple platforms out of a single codebase. |
Flutter speeds feature development and synchronizes |
release schedules across the entire customer base.<topic_end> |
<topic_start> |
How much development experience do I need to use Flutter? |
Flutter is approachable to programmers familiar with |
object-oriented concepts (classes, methods, variables, |
etc) and imperative programming concepts (loops, |
conditionals, etc).We have seen people with very little programming |
experience learn and use Flutter for prototyping |
and app development.<topic_end> |
<topic_start> |
What kinds of apps can I build with Flutter? |
Flutter is designed to support mobile apps that run |
on both Android and iOS, as well as interactive apps |
that you want to run on your web pages or on the desktop.Apps that need to deliver highly branded designs |
are particularly well suited for Flutter. |
However, you can also create pixel-perfect experiences |
that match the Android and iOS design languages with Flutter.Flutter’s package ecosystem supports a wide |
variety of hardware (such as camera, GPS, network, |
and storage) and services (such as payments, cloud |
storage, authentication, and ads).<topic_end> |
<topic_start> |
Who makes Flutter? |
Flutter is an open source project, |
with contributions from Google and other |
companies and individuals.<topic_end> |
<topic_start> |
Who uses Flutter? |
Developers inside and outside of Google use |
Flutter to build beautiful natively-compiled |
apps for iOS and Android. To learn about some |
of these apps, visit the showcase.<topic_end> |
<topic_start> |
What makes Flutter unique? |
Flutter is different than most other options |
for building mobile apps because it doesn’t rely |
on web browser technology nor the set of widgets |
that ship with each device. Instead, Flutter uses |
its own high-performance rendering engine to draw widgets.In addition, Flutter is different because it only |
has a thin layer of C/C++ code. Flutter implements |
most of its system (compositing, gestures, animation, |
framework, widgets, etc) in Dart (a modern, |
concise, object-oriented language) that developers |
can easily approach read, change, replace, or remove. |
This gives developers tremendous control over the system, |
as well as significantly lowers the bar to approachability |
for the majority of the system.<topic_end> |
<topic_start> |
Should I build my next production app with Flutter? |
Flutter 1 was launched on Dec 4th, 2018, |
Flutter 2 on March 3rd, 2021, and |
Flutter 3 on May 10th, 2023. |
As of May 2023, over one million apps have shipped using |
Flutter to many hundreds of millions of devices. |
Check out some sample apps in the showcase.Flutter ships updates on a roughly-quarterly |
cadence that improve stability and performance |
and address commonly-requested user features.<topic_end> |
<topic_start> |
What does Flutter provide? |
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