我有一个带有图标和文本的按钮,两个按钮都在中间对齐,我希望图标在左边,按钮的文本在中间。有人可以调查一下并提供帮助吗?我该怎么做。
这是我的代码:
Widget _signInButton() {
return ButtonTheme(
height: 30,
minWidth: 250,
child: RaisedButton(
color: Colors.white,
splashColor: Colors.grey,
onPressed: () {
signInWithGoogle().whenComplete(() {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) {
return FirstScreen();
},
),
);
});
},
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(40)),
highlightElevation: 0,
// borderSide: BorderSide(color: Colors.grey),
child: Padding(
padding: const EdgeInsets.fromLTRB(0, 10, 0, 10),
child: Row(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Image(image: AssetImage("Assets/google_logo.png"), height: 35.0),
Expanded(
flex: 1,
child: Padding(
padding: const EdgeInsets.only(left: 10),
child: Text(
'Sign in with Google',
style: TextStyle(
fontSize: 15,
color: Colors.black87,
答案 0 :(得分:0)
您可以在下面复制粘贴运行完整代码
您可以将Expanded flex 1
用于图像,将Expanded flex 2
用于文本
代码段
Expanded(
flex: 1,
child: Image(
image: AssetImage("Assets/google_logo.png"),
height: 35.0),
),
Expanded(
flex: 2,
child: Padding(
工作演示
完整代码
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
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> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
_signInButton(),
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.display1,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}
Widget _signInButton() {
return ButtonTheme(
height: 30,
minWidth: 250,
child: RaisedButton(
color: Colors.white,
splashColor: Colors.grey,
onPressed: () {
/*signInWithGoogle().whenComplete(() {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) {
return FirstScreen();
},
),
);
});*/
},
shape:
RoundedRectangleBorder(borderRadius: BorderRadius.circular(40)),
highlightElevation: 0,
// borderSide: BorderSide(color: Colors.grey),
child: Padding(
padding: const EdgeInsets.fromLTRB(0, 10, 0, 10),
child: Row(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Expanded(
flex: 1,
child: Image(
image: AssetImage("Assets/google_logo.png"),
height: 35.0),
),
Expanded(
flex: 2,
child: Padding(
padding: const EdgeInsets.only(left: 10),
child: Text('Sign in with Google',
style: TextStyle(
fontSize: 15, color: Colors.black87))))
]))));
}