_buildItemDatas(BuildContextcontext){List<Widget>items=[];for(varindex=0;index<groupModule.editGroupLists.length;index++){items.add(_buildItem(context,index));}returnitems;}Widget_buildItem(BuildContextcontext,intindex){returnContainer(key:ValueKey('custom key $index'),color:Colors.white,height:...
List<String> options = ['选项1', '选项2', '选项3']; // 可选的选项列表 String selectedOption = '选项1'; // 默认选中的选项 DropdownButton<String>( value: selectedOption, items: options.map((String option) { return DropdownMenuItem<String>( value: option, child: Text(option), ); ...
ListView(/// 方向,设置横向需要宽度scrollDirection:Axis.horizontal,itemExtent:200,children:List.generate(2,(index){returnContainer(//width: 200,child:ListTile(leading:Icon(Icons.menu),trailing:Icon(Icons.delete),title:Text('海贼·王路飞 $index'),subtitle:Text('罗罗洛亚 $index'),),);}),) ima...
List<Widget>? actions:header最右边的组件 List<DataColumn> columns:DataColumn对象,表头 int? sortColumnIndex:当前主排序键的列 bool sortAscending:是否按升序排序。默认为true void Function(bool?)? onSelectAll:当用户使用标题行中的复选框选择或取消选择每一行时调用 double dataRowHeight:数据行高。默认为kM...
EDIT This is how I used a List view inside another list view. Container ( child : ListView.builder( itemBuilder: (context, subMenuIndex) { return Container( padding: EdgeInsets.only(left: 20.0), child: sideMenuStuff.sideMenuData.elementAt(mainIndex).menu.subMenu.elementAt(subMenuIndex).subSubM...
With this package it's easier to create contextual actions for a list item. For example if you want to create the kind of animation you described: You will use this code: newSlidable( delegate:newSlidableDrawerDelegate(), actionExtentRatio:0.25, child:newContainer( color: Colors.white, child...
Flutter是一种跨平台的移动应用开发框架,可以用于快速构建高性能、美观的移动应用程序。它使用Dart语言编写,具有丰富的UI组件和强大的开发工具。 在Flutter中,将数据从一个有状态类传递到另一个类可以通过以下几种方式实现: 构造函数传递:可以在目标类的构造函数中接收来自源类的数据。源类可以通过实例化目标...
In theeditfunction we do something similar, except we change the description of the todo item. Again, in all of these methods we don'tchangethe list. We create a new updated one (because the state isimmutable). 3. Adding providers ...
list.add( ClipRRect( borderRadius: BorderRadius.circular(100.0), child: Container( padding: EdgeInsets.symmetric(vertical: 5.0, horizontal: 15.0), color: Colors.black26, child: Text(val), ), ), ); }); returnlist; } 项目 10.运行出现 ...
( itemBuilder:(c, index) {return_item(index); }, itemCount:list.length, );Widget_item(intindex) {returnSwipeActionCell(/// controllercontroller:controller,/// index is required if you want to enter edit modeindex:index, key:ValueKey(list[index]), trailingActions:[SwipeAction(/// this ...