[英]How can i fix my code and let all the login button on the login screen page work
我有这个代码是我的我一直在尝试让所有主页登录屏幕按钮工作但由于错误我什至注册和忘记密码按钮都无法正常工作希望有人可以帮助我修复我的代码让它工作，让我在按下登录时将我带到一个空白页面，我可以插入一个抽屉和 const。
import 'package:flutter/material.dart';
import 'package:ionicons/ionicons.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Marketing',
debugShowCheckedModeBanner: false,
theme: ThemeData(primarySwatch: Colors.blue),
home: SinginPage(key: UniqueKey()),
);
}
}
class SinginPage extends StatefulWidget {
const SinginPage({required Key key}) : super(key: key);
@override
_SinginPageState createState() => _SinginPageState();
}
class _SinginPageState extends State<SinginPage> {
bool obscureText = false;
final TextEditingController _email = TextEditingController();
final TextEditingController _password = TextEditingController();
final emailGlobalKey = GlobalKey<FormState>();
final passwordGlobalKey = GlobalKey<FormState>();
@override
Widget build(BuildContext context) {
var currentWidth = MediaQuery.of(context).size.width;
var small = currentWidth > 1201;
var extraSmall = currentWidth > 1025;
return Scaffold(
backgroundColor: Colors.white,
body: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
height: extraSmall ? MediaQuery.of(context).size.height : 0.0,
width: small
? MediaQuery.of(context).size.width * 0.72
: extraSmall
? MediaQuery.of(context).size.width - 500
: 0.0,
color: Colors.indigo[200],
child: Image.network(
'https://5.imimg.com/data5/GQ/FP/MY-26802338/online-shopping-system-500x500.jpg',
fit: BoxFit.cover,
),
),
Stack(
alignment: Alignment.topRight,
children: [
Container(
height: MediaQuery.of(context).size.height,
width: small ? MediaQuery.of(context).size.width * 0.28 : 500,
alignment: Alignment.center,
color: Colors.white,
child: Container(
padding: const EdgeInsets.all(60.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const SizedBox(height: 45.0),
Container(
alignment: Alignment.topLeft,
child: const Text(
'WELCOME TO OUR MARKETING APP',
style: TextStyle(
color: Colors.black,
fontSize: 40.0,
fontWeight: FontWeight.bold),
),
),
const SizedBox(height: 65.0),
Container(
alignment: Alignment.topLeft,
child: const Text('Email'),
),
Form(
key: emailGlobalKey,
child: TextFormField(
onChanged: (value) {
setState(() {
_email.text = value;
});
},
decoration: const InputDecoration(
prefixIcon: Padding(
padding:
EdgeInsets.only(right: 20.0, bottom: 1.0),
child: Icon(Icons.email_outlined,
color: Colors.black45, size: 24.0),
),
contentPadding: EdgeInsets.only(top: 15.0, left: 0),
hintStyle: TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey),
hintText: 'Email',
focusedBorder: UnderlineInputBorder(
borderSide:
BorderSide(color: Colors.indigo, width: 2.0),
),
),
// validator: Validators.required('Email is required!'),
),
),
const SizedBox(height: 25.0),
Container(
alignment: Alignment.topLeft,
child: const Text('Password'),
),
Form(
key: passwordGlobalKey,
child: TextFormField(
obscureText: obscureText,
onChanged: (value) {
setState(() {
_password.text = value;
});
},
decoration: InputDecoration(
suffixIcon: obscureText
? InkWell(
onTap: () {
setState(() {
obscureText = false;
});
},
child: const Icon(Ionicons.eye,
color: Colors.black54, size: 25.0),
)
: InkWell(
onTap: () {
setState(() {
obscureText = true;
});
},
child: const Icon(Ionicons.eye_off,
color: Colors.black54, size: 25.0),
),
prefixIcon: const Padding(
padding:
EdgeInsets.only(right: 20.0, bottom: 1.0),
child: Icon(Icons.lock_outline,
color: Colors.black45, size: 25.0),
),
contentPadding:
const EdgeInsets.only(top: 15.0, left: 0),
hintStyle: const TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey),
hintText: 'Password',
focusedBorder: const UnderlineInputBorder(
borderSide:
BorderSide(color: Colors.indigo, width: 2.0),
),
),
// validator:
// Validators.required('Password is required!'),
),
),
const SizedBox(height: 10.0),
Container(
alignment: Alignment.topRight,
child: TextButton(
style: TextButton.styleFrom(
padding: const EdgeInsets.all(0.0)),
onPressed: () {},
child: const Text('Forgot Password'),
)),
const SizedBox(
height: 50.0,
),
SizedBox(
height: 45.0,
width: MediaQuery.of(context).size.width,
child: ElevatedButton(
style: ElevatedButton.styleFrom(
primary: _password.text != ''
? _password.text != ''
? Colors.indigo
: Colors.indigo[300]
: Colors.indigo[300],
elevation: 0.0,
shadowColor: Colors.transparent,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50.0)),
padding: const EdgeInsets.only(
left: 30.0,
top: 0.0,
right: 30.0,
bottom: 0.0)),
onPressed: () {
emailGlobalKey.currentState?.validate();
passwordGlobalKey.currentState?.validate();
},
child: const Text('LOGIN',
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold)),
),
),
Container(
padding: const EdgeInsets.symmetric(
horizontal: 30.0, vertical: 30.0),
child: const Text('OR'),
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
InkWell(
onTap: () {},
child: Padding(
padding: const EdgeInsets.only(right: 8.0),
child: Material(
color: Colors.indigo,
borderRadius: BorderRadius.circular(50.0),
child: const Padding(
padding: EdgeInsets.all(10.0),
child: Icon(
Ionicons.logo_facebook,
color: Colors.white,
size: 30.0,
),
),
),
),
),
InkWell(
onTap: () {},
child: Padding(
padding:
const EdgeInsets.only(left: 8.0, right: 8.0),
child: Material(
color: Colors.red,
borderRadius: BorderRadius.circular(50.0),
child: const Padding(
padding: EdgeInsets.all(10.0),
child: Icon(
Ionicons.logo_google,
color: Colors.white,
size: 30.0,
),
)),
),
),
InkWell(
onTap: () {},
child: Padding(
padding: const EdgeInsets.only(left: 8.0),
child: Material(
color: Colors.blue,
borderRadius: BorderRadius.circular(50.0),
child: const Padding(
padding: EdgeInsets.all(10.0),
child: Icon(
Ionicons.logo_twitter,
color: Colors.white,
size: 30.0,
),
),
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Text("I don't have an account?"),
TextButton(
onPressed: () {},
child: const Text(
"Sign up",
style: TextStyle(color: Colors.blue),
),
)
],
),
],
),
),
),
Container(
padding: const EdgeInsets.only(top: 30.0, right: 50),
child: Icon(
Ionicons.settings_outline,
color: Colors.black12.withOpacity(0.03),
size: 80.0,
),
),
],
),
],
),
);
}
}
您的按钮正在工作，但您的 onTap 功能是空的，因此，您的按钮在被点击时什么也不做。
我在你的代码中添加了一些东西
import 'package:flutter/material.dart';
// import 'package:ionicons/ionicons.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Marketing',
debugShowCheckedModeBanner: false,
theme: ThemeData(primarySwatch: Colors.blue),
home: SinginPage(),
);
}
}
class SinginPage extends StatefulWidget {
const SinginPage({
Key? key,
}) : super(key: key);
@override
_SinginPageState createState() => _SinginPageState();
}
class _SinginPageState extends State<SinginPage> {
bool obscureText = false;
final TextEditingController _email = TextEditingController();
final TextEditingController _password = TextEditingController();
final loginGlobalKey = GlobalKey<FormState>();
@override
Widget build(BuildContext context) {
var currentWidth = MediaQuery.of(context).size.width;
var small = currentWidth > 1201;
var extraSmall = currentWidth > 1025;
return Scaffold(
backgroundColor: Colors.white,
body: SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: GestureDetector(
onTap: () {
FocusScope.of(context).requestFocus(FocusNode());
},
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
height: extraSmall ? MediaQuery.of(context).size.height : 0.0,
width: small
? MediaQuery.of(context).size.width * 0.72
: extraSmall
? MediaQuery.of(context).size.width - 500
: 0.0,
color: Colors.indigo[200],
child: Image.network(
'https://5.imimg.com/data5/GQ/FP/MY-26802338/online-shopping-system-500x500.jpg',
fit: BoxFit.cover,
),
),
Stack(
alignment: Alignment.topRight,
children: [
Container(
height: MediaQuery.of(context).size.height,
width:
small ? MediaQuery.of(context).size.width * 0.28 : 500,
alignment: Alignment.center,
color: Colors.white,
child: Container(
padding: const EdgeInsets.all(60.0),
child: Form(
key: loginGlobalKey,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const SizedBox(height: 45.0),
Container(
alignment: Alignment.topLeft,
child: const Text(
'WELCOME TO OUR MARKETING APP',
style: TextStyle(
color: Colors.black,
fontSize: 40.0,
fontWeight: FontWeight.bold),
),
),
const SizedBox(height: 65.0),
Container(
alignment: Alignment.topLeft,
child: const Text('Email'),
),
TextFormField(
onChanged: (value) {
setState(() {
_email.text = value;
});
},
decoration: const InputDecoration(
prefixIcon: Padding(
padding:
EdgeInsets.only(right: 20.0, bottom: 1.0),
child: Icon(Icons.email_outlined,
color: Colors.black45, size: 24.0),
),
contentPadding:
EdgeInsets.only(top: 15.0, left: 0),
hintStyle: TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey),
hintText: 'Email',
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(
color: Colors.indigo, width: 2.0),
),
),
// validator: Validators.required('Email is required!'),
),
const SizedBox(height: 25.0),
Container(
alignment: Alignment.topLeft,
child: const Text('Password'),
),
TextFormField(
obscureText: obscureText,
onChanged: (value) {
setState(() {
_password.text = value;
});
},
decoration: InputDecoration(
suffixIcon: obscureText
? InkWell(
onTap: () {
setState(() {
obscureText = false;
});
},
child: const Icon(Icons.remove_red_eye,
color: Colors.black54, size: 25.0),
)
: InkWell(
onTap: () {
setState(() {
obscureText = true;
});
},
child: const Icon(
Icons.remove_red_eye_sharp,
color: Colors.black54,
size: 25.0),
),
prefixIcon: const Padding(
padding:
EdgeInsets.only(right: 20.0, bottom: 1.0),
child: Icon(Icons.lock_outline,
color: Colors.black45, size: 25.0),
),
contentPadding:
const EdgeInsets.only(top: 15.0, left: 0),
hintStyle: const TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey),
hintText: 'Password',
focusedBorder: const UnderlineInputBorder(
borderSide: BorderSide(
color: Colors.indigo, width: 2.0),
),
),
// validator:
// Validators.required('Password is required!'),
),
const SizedBox(height: 10.0),
Container(
alignment: Alignment.topRight,
child: TextButton(
style: TextButton.styleFrom(
padding: const EdgeInsets.all(0.0)),
onPressed: () {},
child: const Text('Forgot Password'),
)),
const SizedBox(
height: 50.0,
),
SizedBox(
height: 45.0,
width: MediaQuery.of(context).size.width,
child: ElevatedButton(
style: ElevatedButton.styleFrom(
primary: _password.text != ''
? _password.text != ''
? Colors.indigo
: Colors.indigo[300]
: Colors.indigo[300],
elevation: 0.0,
shadowColor: Colors.transparent,
shape: RoundedRectangleBorder(
borderRadius:
BorderRadius.circular(50.0)),
padding: const EdgeInsets.only(
left: 30.0,
top: 0.0,
right: 30.0,
bottom: 0.0)),
onPressed: () {
if (loginGlobalKey.currentState?.validate() ==
true) {
print('LOGIN');
Navigator.push(
context,
MaterialPageRoute(
builder: (context) {
return Scaffold(
appBar: AppBar(
title: Text('After Login'),
),
body: Column(
mainAxisAlignment:
MainAxisAlignment.center,
children: const [
Center(
child: Text('After Login'),
),
],
),
);
},
),
);
}
},
child: const Text('LOGIN',
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold)),
),
),
Container(
padding: const EdgeInsets.symmetric(
horizontal: 30.0, vertical: 30.0),
child: const Text('OR'),
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
InkWell(
onTap: () {},
child: Padding(
padding: const EdgeInsets.only(right: 8.0),
child: Material(
color: Colors.indigo,
borderRadius: BorderRadius.circular(50.0),
child: const Padding(
padding: EdgeInsets.all(10.0),
child: Icon(
Icons.facebook,
color: Colors.white,
size: 30.0,
),
),
),
),
),
InkWell(
onTap: () {},
child: Padding(
padding: const EdgeInsets.only(
left: 8.0, right: 8.0),
child: Material(
color: Colors.red,
borderRadius:
BorderRadius.circular(50.0),
child: const Padding(
padding: EdgeInsets.all(10.0),
child: Icon(
Icons.facebook_outlined,
color: Colors.white,
size: 30.0,
),
)),
),
),
InkWell(
onTap: () {},
child: Padding(
padding: const EdgeInsets.only(left: 8.0),
child: Material(
color: Colors.blue,
borderRadius: BorderRadius.circular(50.0),
child: const Padding(
padding: EdgeInsets.all(10.0),
child: Icon(
Icons.facebook_outlined,
color: Colors.white,
size: 30.0,
),
),
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Text("I don't have an account?"),
TextButton(
onPressed: () {
print('Sign Up');
},
child: const Text(
"Sign up",
style: TextStyle(color: Colors.blue),
),
)
],
),
],
),
),
),
),
Container(
padding: const EdgeInsets.only(top: 30.0, right: 50),
child: Icon(
Icons.settings_outlined,
color: Colors.black12.withOpacity(0.03),
size: 80.0,
),
),
],
),
],
),
),
),
);
}
}
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