我正在以 firebase 作为后端在 flutter 中制作一个应用程序。我需要的是
-用户应注册/注册
-当管理员登录时，他应该被引导到管理控制台。
-当用户登录时，他应该被引导到用户主页。
我应该为用户还是管理员创建下拉列表？
是否需要管理员也注册？
class RegisterPage extends StatefulWidget {
static String tag = 'register-page';
@override
_RegisterPageState createState() => new _RegisterPageState();
}
class _RegisterPageState extends State<RegisterPage> {
// Create a global key that will uniquely identify the Form widget and allow
// us to validate the form
//
// Note: This is a GlobalKey<FormState>, not a GlobalKey<MyCustomFormState>!
final _formKey = GlobalKey<FormState>();
final emailTextEditController = new TextEditingController();
final firstNameTextEditController = new TextEditingController();
final lastNameTextEditController = new TextEditingController();
final passwordTextEditController = new TextEditingController();
final confirmPasswordTextEditController = new TextEditingController();
final FocusNode _emailFocus = FocusNode();
final FocusNode _firstNameFocus = FocusNode();
final FocusNode _lastNameFocus = FocusNode();
final FocusNode _passwordFocus = FocusNode();
final FocusNode _confirmPasswordFocus = FocusNode();
final FirebaseAuth _firebaseAuth = FirebaseAuth.instance;
String _errorMessage = '';
void processError(final PlatformException error) {
setState(() {
_errorMessage = error.message;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
body: Center(
child: Form(
key: _formKey,
child: ListView(
shrinkWrap: true,
padding: EdgeInsets.only(top: 36.0, left: 24.0, right: 24.0),
children: <Widget>[
Padding(
padding: EdgeInsets.all(8.0),
child: Text(
'Register',
style: TextStyle(fontSize: 36.0, color: Colors.black87),
textAlign: TextAlign.center,
),
),
Padding(
padding: EdgeInsets.all(8.0),
child: Text(
'$_errorMessage',
style: TextStyle(fontSize: 14.0, color: Colors.red),
textAlign: TextAlign.center,
),
),
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0),
child: TextFormField(
validator: (value) {
if (value.isEmpty || !value.contains('@')) {
return 'Please enter a valid email.';
}
return null;
},
controller: emailTextEditController,
keyboardType: TextInputType.emailAddress,
autofocus: true,
textInputAction: TextInputAction.next,
focusNode: _emailFocus,
onFieldSubmitted: (term) {
FocusScope.of(context).requestFocus(_firstNameFocus);
},
decoration: InputDecoration(
hintText: 'Email',
contentPadding:
EdgeInsets.fromLTRB(20.0, 10.0, 20.0, 10.0),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(32.0)),
),
),
),
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0),
child: TextFormField(
validator: (value) {
if (value.isEmpty) {
return 'Please enter your first name.';
}
return null;
},
controller: firstNameTextEditController,
keyboardType: TextInputType.text,
autofocus: false,
textInputAction: TextInputAction.next,
focusNode: _firstNameFocus,
onFieldSubmitted: (term) {
FocusScope.of(context).requestFocus(_lastNameFocus);
},
decoration: InputDecoration(
hintText: 'First Name',
contentPadding:
EdgeInsets.fromLTRB(20.0, 10.0, 20.0, 10.0),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(32.0)),
),
),
),
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0),
child: TextFormField(
validator: (value) {
if (value.isEmpty) {
return 'Please enter your last name.';
}
return null;
},
controller: lastNameTextEditController,
keyboardType: TextInputType.text,
autofocus: false,
textInputAction: TextInputAction.next,
focusNode: _lastNameFocus,
onFieldSubmitted: (term) {
FocusScope.of(context).requestFocus(_passwordFocus);
},
decoration: InputDecoration(
hintText: 'Last Name',
contentPadding:
EdgeInsets.fromLTRB(20.0, 10.0, 20.0, 10.0),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(32.0)),
),
),
),
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0),
child: TextFormField(
validator: (value) {
if (value.length < 8) {
return 'Password must be longer than 8 characters.';
}
return null;
},
autofocus: false,
obscureText: true,
controller: passwordTextEditController,
textInputAction: TextInputAction.next,
focusNode: _passwordFocus,
onFieldSubmitted: (term) {
FocusScope.of(context)
.requestFocus(_confirmPasswordFocus);
},
decoration: InputDecoration(
hintText: 'Password',
contentPadding:
EdgeInsets.fromLTRB(20.0, 10.0, 20.0, 10.0),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(32.0)),
),
),
),
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0),
child: TextFormField(
autofocus: false,
obscureText: true,
controller: confirmPasswordTextEditController,
focusNode: _confirmPasswordFocus,
textInputAction: TextInputAction.done,
validator: (value) {
if (passwordTextEditController.text.length > 8 &&
passwordTextEditController.text != value) {
return 'Passwords do not match.';
}
return null;
},
decoration: InputDecoration(
hintText: 'Confirm Password',
contentPadding:
EdgeInsets.fromLTRB(20.0, 10.0, 20.0, 10.0),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(32.0)),
),
),
),
Padding(
padding: EdgeInsets.only(top: 10.0),
child: RaisedButton(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(24),
),
onPressed: () {
if (_formKey.currentState.validate()) {
_firebaseAuth
.createUserWithEmailAndPassword(
email: emailTextEditController.text,
password: passwordTextEditController.text)
.then((onValue) {
Firestore.instance
.collection('users')
.document(onValue.uid)
.setData({
'firstName': firstNameTextEditController.text,
'lastName': lastNameTextEditController.text,
}).then((userInfoValue) {
Navigator.of(context).pushNamed(HomePage.tag);
});
}).catchError((onError) {
processError(onError);
});
}
},
padding: EdgeInsets.all(12),
color: Colors.lightGreen,
child: Text('Sign Up'.toUpperCase(),
style: TextStyle(color: Colors.white)),
),
),
Padding(
padding: EdgeInsets.zero,
child: FlatButton(
child: Text(
'Cancel',
style: TextStyle(color: Colors.black54),
),
onPressed: () {
Navigator.pop(context);
},
))
],
))),
);
}
}