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<topic_start> |
what devices and OS versions does flutter run on? |
we support and test running flutter on a variety |
of low-end to high-end platforms. for a detailed list |
of the platforms on which we test, see |
the list of supported platforms. |
flutter supports building ahead-of-time (aot) compiled libraries |
for x86_64, armeabi-v7a, and arm64-v8a. |
apps built for ARMv7 or ARM64 run fine (using ARM emulation) |
on many x86 android devices. |
we support developing flutter apps on a range of platforms. |
see the system requirements listed under each |
development operating system. |
<topic_end> |
<topic_start> |
does flutter run on the web? |
yes, web support is available in the stable channel. |
for more details, check out the web instructions. |
<topic_end> |
<topic_start> |
can i use flutter to build desktop apps? |
yes, desktop support is in stable for windows, |
macOS, and linux. |
<topic_end> |
<topic_start> |
can i use flutter inside of my existing native app? |
yes, learn more in the add-to-app section of our website. |
<topic_end> |
<topic_start> |
can i access platform services and APIs like sensors and local storage? |
yes. flutter gives developers out-of-the-box access to some |
platform-specific services and APIs from the operating system. |
however, we want to avoid the “lowest common denominator” problem |
with most cross-platform APIs, so we don’t intend to build |
cross-platform APIs for all native services and APIs. |
a number of platform services and APIs have |
ready-made packages available on pub.dev. |
using an existing package is easy. |
finally, we encourage developers to use flutter’s |
asynchronous message passing system to create your |
own integrations with platform and third-party APIs. |
developers can expose as much or as little of the |
platform APIs as they need, and build layers of |
abstractions that are a best fit for their project. |
<topic_end> |
<topic_start> |
can i extend and customize the bundled widgets? |
absolutely. flutter’s widget system was designed |
to be easily customizable. |
rather than having each widget provide a large number of parameters, |
flutter embraces composition. widgets are built out of smaller |
widgets that you can reuse and combine in novel ways to make |
custom widgets. for example, rather than subclassing a generic |
button widget, ElevatedButton combines a material widget with a |
GestureDetector widget. the material widget provides the visual |
design and the GestureDetector widget provides the |
interaction design. |
to create a button with a custom visual design, you can combine |
widgets that implement your visual design with a GestureDetector, |
which provides the interaction design. for example, |
CupertinoButton follows this approach and combines a |
GestureDetector with several other widgets that implement its |
visual design. |
composition gives you maximum control over the visual and |
interaction design of your widgets while also allowing a |
large amount of code reuse. in the framework, we’ve decomposed |
complex widgets to pieces that separately implement |
the visual, interaction, and motion design. you can remix |
these widgets however you like to make your own custom |
widgets that have full range of expression. |
<topic_end> |
<topic_start> |
why would i want to share layout code across iOS and android? |
you can choose to implement different app layouts for |
iOS and android. developers are free to check the mobile OS |
at runtime and render different layouts, |
though we find this practice to be rare. |
more and more, we see mobile app layouts and designs evolving |
to be more brand-driven and unified across platforms. |
this implies a strong motivation to share layout and UI |
code across iOS and android. |
the brand identity and customization of the app’s |
aesthetic design is now becoming more important than |
strictly adhering to traditional platform aesthetics. |
for example, app designs often require custom fonts, colors, |
shapes, motion, and more in order to clearly convey their |
brand identity. |
we also see common layout patterns deployed across |
iOS and android. for example, the “bottom nav bar” |
pattern can now be naturally found across iOS and android. |
there seems to be a convergence of design ideas |
across mobile platforms. |
<topic_end> |
<topic_start> |
can i interop with my mobile platform’s default programming language? |
yes, flutter supports calling into the platform, |
including integrating with java or kotlin code on android, |
and ObjectiveC or swift code on iOS. |
this is enabled by a flexible message passing style |
where a flutter app might send and receive messages |
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