flutter registration form example
Example 1: create a validator in flutter
TextFormField(
validator: (value) {
if (value.isEmpty) {
return 'Please enter some text';
}
return null;
},
);
Example 2: validator flutter
final passwordValidator = MultiValidator([
RequiredValidator(errorText: 'password is required'),
MinLengthValidator(8, errorText: 'password must be at least 8 digits long'),
PatternValidator(r'(?=.*?[#?!@$%^&*-])', errorText: 'passwords must have at least one special character')
]);
String password;
Form(
key: _formKey,
child: Column(children: [
TextFormField(
obscureText: true,
onChanged: (val) => password = val,
validator: passwordValidator,
),
TextFormField(
validator: (val) => MatchValidator(errorText: 'passwords do not match').validateMatch(val, password),
)
]),
);
Example 3: registration in flutter
onPressed: () async {
setState(() {
spooner = true;
});
try {
final newUser = await _auth.createUserWithEmailAndPassword(
email: email, password: password);
if (newUser != null) {
Navigator.pushNamed(context, ChatScreen.id);
}
setState(() {
spooner = false;
});
} catch (e) {
print(e);
}