build_context
BuildContext 内で最も使われるプロパティや関数に簡単にアクセスできるようにするパッケージです。
BuildContext インスタンス内の最も使用されるプロパティにアクセスします。
以下は英語原文のスナップショットです。最新版は GitHub をご覧ください。
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Access most used properties in your BuildContext instance.
This package relies on Dart's extension to provide easy access for the most used properties and functions that depends on the BuildContext instance.
I update this package frequently to add more extensions, bellow you can see the currently available extensions in the latest version.
MediaQuery. Access properties right in the context instance. Available extensions:context.mediaQuerySize
context.orientation
context.mediaQueryPadding
context.alwaysUse24HourFormat
context.devicePixelRatio
context.platformBrightness
context.textScaleFactor
context.isLandscape
context.isPortrait
context.mediaQueryViewPadding
context.mediaQueryViewInsets
context.mediaQueryShortestSide
context.isPhone
context.isTablet
context.isSmallTablet
context.isLargeTablet
Navigator class. Navigate with ease. Available extensions:context.push()context.pop()context.canPop()context.pushNamed()context.popUntil()Theme class. Access your themes right in the context instance. Available extensions:context.themecontext.textThemecontext.primaryTextThemecontext.accentTextThemecontext.bottomAppBarThemecontext.bottomSheetThemecontext.appBarThemecontext.backgroundColorcontext.primaryColorcontext.buttonColorcontext.scaffoldBackgroundColorcontext.platformcontext.isAndroidcontext.isIOScontext.isWindowscontext.isMacOScontext.isLinuxcontext.isFuchsiacontext.headline1context.headline2context.headline3context.headline4context.headline5context.headline6context.subtitle1context.bodyText1context.bodyText2context.captioncontext.buttoncontext.subtitle2context.overlineScaffold class. Handle your scaffold in their context.Note: those must be called in the context of a Scaffold widget otherwise you might have errors.
context.openDrawer()context.openEndDrawer()context.showSnackBar()context.hideCurrentSnackBar()context.removeCurrentSnackBar()context.showBottomSheet()Form.of(context) class.Note: those must be called in the context of a Scaffold widget otherwise you might have errors.
context.form.validate()context.form.reset()context.form.save()FocusScope.of(context) class.context.focusScope.hasFocus
context.focusScope.isFirstFocus
context.focusScope.canRequestFocus
context.focusScope.hasPrimaryFocus
context.focusScope.unfocus()
context.focusScope.nextFocus()
context.focusScope.requestFocus()
context.focusScope.previousFocus()
context.focusScope.setFirstFocus()
context.focusScope.consumeKeyboardToken()
context.closeKeyboard()
ModalRoute.of(context) class.context.modalRoutecontext.routeSettingsAdd it in your pubspec.yaml:
dependencies:
build_context: ^3.0.0
Import it where you want to use it e.g, in your widget's file.
import "package:build_context/build_context.dart";
Here is a usage example:
import 'package:flutter/material.dart';
import "package:build_context/build_context.dart";
class MyHomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: context.scaffoldBackgroundColor, // There is no Theme.of(context)
body: Center(
child: GestureDetector(
onTap: () => context.pushNamed('/detailsPage'), // we use only context not Navigator.of(context)
child: Text(
'Press Me',
style: context.primaryTextTheme.title, // we use only context not Theme.of(context)
),
),
),
);
}
}
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