常用布局widgets 以下widget分为两类:widgets library中的标准widget和Material Components library中的专用widget 。 任何应用程序都可以使用widgets library中的widget,但只有Material应用程序可以使用Material Components库。 标准widgets Container添加padding, margins, borders, background color, 或将其他装饰添加到widget....
itemExtent property - ListView class - widgets library - Dart API与其他混合平台相比, Flutter 性能够快吗?答案是肯定的,但是出于这种考虑,让我们来看看一些令人惊叹的性能和优化实践。 原文 inficial.medium.com/flu参考 api.flutter.dev/flutter blog.codemagic.io/how-t pub.dev/packages/nil medium.com/...
syncfusion_officechart Office chart library syncfusion_officecore This package is a dependecy package for Office chart library. syncfusion_flutter_core This package is a dependecy package for all the Syncfusion Flutter widgets and libraries. syncfusion_localizations This package contains localized text ...
I/flutter (10540): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════ I/flutter (10540): The following assertion was thrown building MyApp(dirty, state: _State#fe0a...
instance.dispatchObjectCreated( library: _flutterWidgetsLibrary, className: '$State', object: this, ); } } /// 每当小部件配置更改时调用。/// 如果父小部件重新构建并要求此树中的位置更新以显示具有相同 [runtimeType] 和 [Widget.key] 的新小部件,/// 则框架将更新此 [State] 对象的 [widget...
Most Popular Flutter Widgets DataGrid Charts Calendar Radial Gauge PDF library PDF Viewer Fast and powerful grid The Syncfusion Flutter DataGrid is used to display and manipulate data in a tabular view. It is built from the ground up to achieve the best possible performance, even when loading lar...
PlatformViewhttps://api.flutter.dev/flutter/widgets/AndroidView-class.html 主要适用于flutter中不太容易实现的widget(Native中已经很成熟,并且很有优势的View),如官方的WebView。感兴趣的化可以了解一下。 TextureTexture class - widgets library - Dart API ...
// The StoreProvider should wrap your MaterialApp or WidgetsApp. This will // ensure all routes have access to the store. return StoreProvider<int>( // Pass the store to the StoreProvider. Any ancestor `StoreConnector` // Widgets will find and use this value as the `Store`. ...
=== Exception caught by widgets library === The following assertion was thrown building Text("动画状态 : null"): No Directionality widget found. RichText widgets require a Directionality widget ancestor. The specific widget that could not find a Directionality ancestor was: RichText softWrap...
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════ The following assertion was thrown building Scaffold(dirty, state: ScaffoldState#6f74d):No MediaQuery widget found. ...