import 'package:flutter/material.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( appBar: AppBar( title: Text('Flutter Container Width Percentage'), ), body: Center( child: Fract...
代码语言:txt 复制 FractionallySizedBox( widthFactor: 0.5, // 宽度占父容器的50% heightFactor: 0.3, // 高度占父容器的30% child: Container( color: Colors.blue, child: Center( child: Text( '百分比定位', style: TextStyle( color: Colors.white, fontSize: 20, ), ), ), ), ) 在上面的示...
void _checkDragOffset(double containerExtent) { assert(_mode == _RefreshIndicatorMode.drag || _mode == _RefreshIndicatorMode.armed); double newValue = _dragOffset! / (containerExtent * _kDragContainerExtentPercentage); if (_mode == _RefreshIndicatorMode.armed) { newValue = math.max(newValue...
return Container( width: 200, height: 200, child: Card( child: CustomPaint( painter: _CustomPainter(percentage: percentage), child: // 卡片内容 ), ), ); } } 创建一个自定义的绘图类,用于绘制带有特定百分比颜色的矩形。 代码语言:txt 复制 class _CustomPainter extends CustomPainter...
9. 百分比布局(当大小被设置为 matchConstraint 时,就会启用百分比布局,默认的百分比是 1(100%)。相关的属性是 widthPercent,heightPercent,widthPercentageAnchor,heightPercentageAnchor) 10. 引导线 11. 约束和 Widget 分离 12. 栅栏 13. 比例布局 1. widthHeightRatio: 1 / 3, ...
,Container(color:Colors.redAccent,alignment:Alignment.center,child:constText('box1'),).apply(constraint:Constraint(// Constraints set with widgetsid:box1,width:200,height:100,topRightTo:parent,),),Container(color:Colors.blue,alignment:Alignment.center,child:constText('box2'),).applyConstraint(/...
new Container( width: 150.0, child: new TextField( controller: _controller, decoration: new InputDecoration( hintText: "请输入高度", ) ), ), new RaisedButton(onPressed: (){ print("waterHeight is ${_controller.toString()}"); FocusScope.of(context).requestFocus(FocusNode()); ...
percentage); @override Widget build(BuildContext context) { return Card( elevation: 1.0, child: InkWell( onTap: () => print("tapped"), child: Container( padding: EdgeInsets.only(top: 15.0, bottom: 15.0, right: 15.0), height: 100, decoration: BoxDecoration( color: Colors.white, border...
round, progressColor:Colors.purple, ),Padding( padding:EdgeInsets.all(15.0), child:newCircularPercentIndicator( radius:60.0, lineWidth:5.0, percent:1.0, center:newText("100%"), progressColor:Colors.green, ), ),Container( padding: Linear percent indicator...
widget: Container( child: const Text(r'€ - $ '), ), coordinateUnit: CoordinateUnit.percentage, region: AnnotationRegion.plotArea, x: '50%', y: '50%' ) ] ) Refer to the following screenshot to see this code rendered. Annotation Positioned Based on Percentage Value ...