是否有任何可能的直接方法将实际上为345.
类型的str
转换为int
类型?
我尝试了int('345.')
,但它给出了:
ValueError: invalid literal for int() with base 10: '345.'
答案 0 :(得分:2)
可能不是很优雅,但是可以完成您想做的事情而无需修改字符串:
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: ListView.builder(
itemCount: 15,
itemBuilder: (context, index) {
return Card(
clipBehavior: Clip.antiAlias,
child: Container(
height: 120,
padding: const EdgeInsets.all(0),
child: Row(children: [
Expanded(
flex: 6,
child: Container(
decoration: BoxDecoration(
image: DecorationImage(
image: NetworkImage(
'https://live.staticflickr.com/3780/9134266649_3d2f1af95b_z.jpg'),
fit: BoxFit.fill)),
),
),
Spacer(
flex: 1,
),
Expanded(
flex: 14,
child: Container(
padding: const EdgeInsets.only(top: 5),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Text("Title",
style: TextStyle(
fontSize: 20.0, fontWeight: FontWeight.bold)),
Row(
children: <Widget>[
Text(
'Barcode : ',
style: TextStyle(fontWeight: FontWeight.bold),
),
Text(
"barcode",
style: TextStyle(fontSize: 15.0),
),
],
),
Row(
children: <Widget>[
Text(
'Harga : ',
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 20),
),
Text(
'harga',
style: TextStyle(fontSize: 20),
)
],
),
Align(
alignment: Alignment.bottomRight,
child: Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
FlatButton(
onPressed: null,
child: Text("DETAIL ITEM")),
FlatButton(
onPressed: null, child: Text("BELI")),
],
),
)
],
),
),
),
]),
),
);
}),
);
}
}
答案 1 :(得分:2)
丑陋的解决方案,但是可行:)
int('365.'.split('.')[0])
答案 2 :(得分:0)
我认为先删除最后一个字符然后将其转换为float是可以理解的。
fl = "345."
fl = fl[:-1]
fl = float(fl)