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you can write your own, and publish it on pub.dev.
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how do i access the GPS sensor?
use the geolocator community plugin.
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how do i access the camera?
the camera plugin is popular for accessing the camera.
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how do i log in with facebook?
to log in with facebook, use the
flutter_facebook_login community plugin.
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how do i use firebase features?
most firebase functions are covered by first party plugins.
these plugins are first-party integrations, maintained by the flutter team:
you can also find some third-party firebase plugins on pub.dev
that cover areas not directly covered by the first-party plugins.
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how do i build my own custom native integrations?
if there is platform-specific functionality that flutter
or its community plugins are missing,
you can build your own following the
developing packages and plugins page.
flutter’s plugin architecture, in a nutshell,
is much like using an event bus in android:
you fire off a message and let the receiver process and emit a result
back to you. in this case, the receiver is code running on the native side
on android or iOS.
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themes (styles)
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how do i theme my app?
flutter comes with a beautiful, built-in implementation of material design,
which handles much of the styling and theming needs
that you would typically do.
Xamarin.Forms does have a global ResourceDictionary
where you can share styles across your app.
alternatively, there is theme support currently in preview.
in flutter, you declare themes in the top level widget.
to take full advantage of material components in your app,
you can declare a top level widget MaterialApp
as the entry point to your application.
MaterialApp is a convenience widget
that wraps a number of widgets that are commonly required
for applications implementing material design.
it builds upon a WidgetsApp by adding material-specific functionality.
you can also use a WidgetsApp as your app widget,
which provides some of the same functionality,
but is not as rich as MaterialApp.
to customize the colors and styles of any child components,
pass a ThemeData object to the MaterialApp widget.
for example, in the following code,
the color scheme from seed is set to deepPurple and text selection color is red.
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class SampleApp extends StatelessWidget {
/// this widget is the root of your application.
const SampleApp({super.key});
@override
widget build(BuildContext context) {
return MaterialApp(
title: 'sample app',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
textSelectionTheme:
const TextSelectionThemeData(selectionColor: colors.red),
),
home: const SampleAppPage(),
);
}
}
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databases and local storage
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how do i access shared preferences or UserDefaults?
Xamarin.Forms developers will likely be familiar with the
Xam.Plugins.Settings plugin.
in flutter, access equivalent functionality using the
shared_preferences plugin. this plugin wraps the
functionality of both UserDefaults and the android
equivalent, SharedPreferences.
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how do i access SQLite in flutter?
in Xamarin.Forms most applications would use the sqlite-net-pcl
plugin to access SQLite databases.
in flutter, on macOS, android, and iOS,
access this functionality using the
sqflite plugin.
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