我正在尝试在ListTile
下获取一个popupmenu。 title
显示描述,subtitle
显示带有某些消息的所选值,并且onTap
打开弹出菜单,用户可以在其中选择一个值。
我尝试将DropdownButtonHideUnderline
放入subtitle
中,但这会显示一个箭头,并且显然不会响应ListTile
onTab
。
我如何在ListTile
上获得弹出菜单?
最佳答案
也许您可以尝试PopupMenuButton,
PopupMenuButton<String>(
onSelected: (String value) {
setState(() {
_selection = value;
});
},
child: ListTile(
leading: IconButton(
icon: Icon(Icons.add_alarm),
onPressed: () {
print('Hello world');
},
),
title: Text('Title'),
subtitle: Column(
children: <Widget>[
Text('Sub title'),
Text(_selection == null ? 'Nothing selected yet' : _selection.toString()),
],
),
trailing: Icon(Icons.account_circle),
),
itemBuilder: (BuildContext context) => <PopupMenuEntry<String>>[
const PopupMenuItem<String>(
value: 'Value1',
child: Text('Choose value 1'),
),
const PopupMenuItem<String>(
value: 'Value2',
child: Text('Choose value 2'),
),
const PopupMenuItem<String>(
value: 'Value3',
child: Text('Choose value 3'),
),
],
)
看看How to open a PopupMenuButton?关于Flutter如何在ListTile上获取弹出菜单?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/54316193/