问题描述
我希望加载图片/Room1_Dog1、图片/Room1_Dog2.....图片/Room3_Dog3.
我不知道如何编写像 images/room$_Dog$
这样的代码?
示例:当我同时按下 room1 按钮和 dog 3 按钮时,我希望它加载 images/room1_dog3
我无法加载图片我没有声誉
import 'package:Flutter/material.dart';
void main() {
runApp(DogImage());
}
class DogImage extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Screen',theme: ThemeData(
primarySwatch: Colors.orange,visualDensity: VisualDensity.adaptivePlatformDensity,),home: MyHomePage(title: 'Screen'),);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key,this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
List<bool> isSelected = List.generate(3,(index) => false);
var _itemImage = [
Image(image: Assetimage('images/dog1.jpeg'),Image(image: Assetimage('images/dog2.jpeg'),Image(image: Assetimage('images/dog3.jpg'),)];
int index =0;
tmpFunction() {
Container(
child: _itemImage[index],width: 500,);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,children: <Widget>[
Container(
child: _itemImage[index],Text(
'loadimage',Container(
child: ToggleButtons(children:[
Text('room1'),Text('room2'),Text('room3'),],onpressed: (button1){setState(() {index=button1;
});},isSelected: isSelected),Row(
mainAxisAlignment: MainAxisAlignment.center,children: [
ToggleButtons(children:[
Text('dog1'),Text('dog2'),Text('dog3'),onpressed: (button2){setState(() {index= button2;
});},);
}
}
解决方法
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