在构建期间调用 setState()或 markNeedsBuild

class MyHome extends StatefulWidget {
@override
State<StatefulWidget> createState() => new MyHomePage2();
}


class MyHomePage2 extends State<MyHome> {
List items = new List();


buildlist(String s) {
setState(() {
print("entered buildlist" + s);
List refresh = new List();
if (s == 'button0') {
refresh = [
new Refreshments("Watermelon", 250),
new Refreshments("Orange", 275),
new Refreshments("Pine", 300),
new Refreshments("Papaya", 225),
new Refreshments("Apple", 250),
];
} else if (s == 'button1') {
refresh = [
new Refreshments("Pina Colada", 250),
new Refreshments("Bloody Mary", 275),
new Refreshments("Long Island Ice tea", 300),
new Refreshments("Screwdriver", 225),
new Refreshments("Fusion Cocktail", 250),
];
} else if (s == 'button2') {
refresh = [
new Refreshments("Virgin Pina Colada", 250),
new Refreshments("Virgin Mary", 275),
new Refreshments("Strawberry Flush", 300),
new Refreshments("Mango Diver", 225),
new Refreshments("Peach Delight", 250),
];
} else {
refresh = [
new Refreshments("Absolute", 250),
new Refreshments("Smirnoff", 275),
new Refreshments("White Mischief", 300),
new Refreshments("Romanov", 225),
new Refreshments("Blender's Pride", 250),
];
}


for (var item in refresh) {
items.add(new ItemsList(item));
}
});
}


@override
Widget build(BuildContext context) {
var abc = MediaQuery.of(context).size;


print(abc.width);


var width = abc.width / 4;


Text text = new Text("Dev");
Text text2 = new Text("Sneha");
Text text3 = new Text("Prashant");
Text text4 = new Text("Vikesh");


var pad = const EdgeInsets.all(10.0);


Padding pad1 = new Padding(child: text, padding: pad);
Padding pad2 = new Padding(child: text2, padding: pad);
Padding pad3 = new Padding(child: text3, padding: pad);
Padding pad4 = new Padding(child: text4, padding: pad);


ListView listView = new ListView(children: <Widget>[
new Image.asset('images/party.jpg'),
pad1,
pad2,
pad3,
pad4
]);


Drawer drawer = new Drawer(child: listView);


return new Scaffold(
drawer: drawer,


appBar: new AppBar(
title: new Text('Booze Up'),
),
body: new Column(children: <Widget>[
new ListView.builder(
scrollDirection: Axis.horizontal,
itemCount: 4,
itemBuilder: (BuildContext context, int index) {
return new Column(children: <Widget>[
new Container(
child: new Flexible(
child: new FlatButton(
child: new Image.asset('images/party.jpg',
width: width, height: width),
onPressed: buildlist('button' + index.toString()),
)),
width: width,
height: width,
)
]);
},
),
new Expanded(
child: new ListView(
padding: new EdgeInsets.fromLTRB(10.0, 10.0, 0.0, 10.0),
children: items,
scrollDirection: Axis.vertical,
)),
]),


floatingActionButton: new FloatingActionButton(
onPressed: null,
child: new Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}


class Refreshments {
String name;
int price;


Refreshments(this.name, this.price);
}


class ItemsList extends StatelessWidget {
final Refreshments refreshments;


ItemsList(this.refreshments);


@override
Widget build(BuildContext context) {
return new ListTile(
onTap: null,
title: new Text(refreshments.name),
);
}
}

全密码

我有两个错误:

水平视图被赋予无限高度。 一个水平的视窗被给予了无限量的垂直空间来扩展。

2] setState ()或 markNeedsBuild 在构建期间调用 垂直的 renderflex 溢出了99488个像素。

请帮帮我。我创建这个应用程序，在每个图像点击一个列表应该显示如下。图像将在一行中，列表应显示在该行的下方。

谢谢你。