你好，我是Flutter的新手，正在尝试编写我的第一个应用程序。我遇到了Flutter(Dart) RenderFlex溢出像素的问题。
我已经尝试了多种不同的方法来完成这个任务，但是仍然使用ListView.Builder失败了。有没有更好的方法来解决这个问题？
以下是我的代码，感谢您提前的指导。
class Register extends StatefulWidget {
final Function toggleView;
Register({ this.toggleView });
@override
_RegisterState createState() => _RegisterState();
}
class _RegisterState extends State<Register> {
final AuthService _auth = AuthService();
final _formKey = GlobalKey<FormState>();
String error = '';
bool loading = false;
// text field state
String email = '';
String password = '';
String confirmpwd ='';
@override
Widget build(BuildContext context) {
return loading ? Loading() : Scaffold(
backgroundColor: Colors.white,
appBar: AppBar(
backgroundColor: Colors.blue[400],
elevation: 0.0,
title: Text('Sign up to Tenant App'),
actions: <Widget>[
FlatButton.icon(
icon: Icon(Icons.person),
label: Text('Sign In'),
onPressed: () => widget.toggleView(),
),
],
),
body: Container(
padding: EdgeInsets.symmetric(vertical: 20.0, horizontal: 50.0),
child: Form(
key: _formKey,
child: Column(
children: <Widget>[
SizedBox(height: 20.0),
TextFormField(
decoration: textInputDecoration.copyWith(hintText: 'email'),
validator: (val) => val.isEmpty ? 'Enter an email' : null,
onChanged: (val) {
setState(() => email = val);
},
),
SizedBox(height: 20.0),
TextFormField(
decoration: textInputDecoration.copyWith(hintText: 'password'),
obscureText: true,
validator: (val) => val.length < 6 ? 'Enter a password 6+ chars long' : null,
onChanged: (val) {
setState(() => password = val);
},
),
SizedBox(height: 20.0),
TextFormField(
decoration: textInputDecoration.copyWith(hintText: 'password'),
obscureText: true,
validator: (val) => val != password ? 'Password \'t match' : null,
),
SizedBox(height: 20.0),
RaisedButton(
color: Colors.pink[400],
child: Text(
'Register',
style: TextStyle(color: Colors.white),
),
onPressed: () async {
if(_formKey.currentState.validate()){
setState(() => loading = true);
dynamic result = await _auth.registerWithEmailAndPassword(email, password);
if(result == null) {
setState(() {
loading = false;
error = 'Please supply a valid email';
});
}
}
}
),
SizedBox(height: 12.0),
Text(
error,
style: TextStyle(color: Colors.red, fontSize: 14.0),
)
],
),
),
),
);
}
}