IOS 上的 Flutter 应用程序在没有任何堆栈跟踪的情况下强制关闭。当您单击 obscureText 值为 true 的 TextFormField 时，应用程序会立即崩溃。
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
static const String _title = 'Flutter TextFormField Error';
@override
Widget build(BuildContext context) {
return MaterialApp(
title: _title,
home: HomePage(),
);
}
}
class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
TextEditingController nameController = TextEditingController();
TextEditingController passwordController = TextEditingController();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('TextFormField'),
),
body: Container(
padding: EdgeInsets.all(16.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
TextFormField(
controller: nameController,
keyboardType: TextInputType.emailAddress,
decoration: InputDecoration(
hintText: 'Email',
),
),
TextFormField(
controller: passwordController,
obscureText: true,
decoration: InputDecoration(
hintText: 'Password',
),
),
],
),
),
);
}
}