使用TextButton 代码语言:javascript 复制 import'package:flutter/material.dart';voidmain(){runApp(MyApp());}classMyAppextendsStatelessWidget{@override Widgetbuild(BuildContext context){returnMaterialApp(home:Scaffold(appBar:AppBar(title:Text('TextButton with Icon and Text'),),body:Center(child:TextButt...
import'package:flutter/material.dart';classLearnRadioButton extends StatefulWidget{ @override State<StatefulWidget>createState() {returnnew_LearnRadioButton(); } }class_LearnRadioButton extends State<LearnRadioButton>{intgroupValue=1; @override Widget build(BuildContext context) {returnnewScaffold( body:...
import'package:flutter/material.dart';classLearnRadioButton extends StatefulWidget{ @override State<StatefulWidget>createState() {returnnew_LearnRadioButton(); } }class_LearnRadioButton extends State<LearnRadioButton>{intgroupValue=1; @override Widget build(BuildContext context) {returnnewScaffold( body:...
1. Radio 单选按钮,一般用来表现一些简单的信息。 常用属性如下: (1). value 单选的值; (2). ...
//TextStyle this.style, //下拉菜单icon按钮大小 this.iconSize: 24.0, this.isDense: false, }) DropdownButton 下拉菜单按钮 下面我们看看如何实现上面的效果: 通过上面的源码的注释this.items这个是一个集合List<DropdownMenuItem<T>> 那么我们定义一个方法用于生成下拉菜单item数据集合: ...
https://medium.com/flutterdevs/exploring-custom-radio-button-in-flutter-4a93a7892185 正文 了解如何创建一个自定义单选按钮在您的 Flutter 应用程序 单选按钮则称为选择按钮,它保存布尔值。它允许客户从一组预定义的选择中选择一个选择。这个组件使它不完全相同于一个复选框,我们可以选择一个以上的替代和未选择...
final String text; final ValueChanged<T?>onChanged; const MyRadioOption({ required this.value, required this.groupValue, required this.label, required this.text, required this.onChanged, }); Widget _buildLabel() { final bool isSelected = value == groupValue; ...
首先,让我们创建自己的小部件,名为CustomRadioButton: intvalue=0;WidgetCustomRadioButton(Stringtext,intindex){returnOutlineButton(onPressed:(){setState((){value=index;});},child:Text(text,style:TextStyle(color:(value==index)?Colors.green:Colors.black,),),shape:RoundedRectangleBorder(borderRadius:Bo...
import'package:flutter/material.dart';classLearnRadioButtonextendsStatefulWidget{@overrideState<StatefulWidget>createState(){returnnew_LearnRadioButton();}}class_LearnRadioButtonextendsState<LearnRadioButton>{intgroupValue=1;@overrideWidgetbuild(BuildContextcontext){returnnewScaffold(body:newColumn(mainAxisAlignmen...
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