flutter - 在一个页面视图中管理多个表单验证，其中一个按下
问题描述
按下回调按钮时，我必须同时提交 4 个表单。但是，当按下此按钮时，使用 onpressed 调用的函数必须验证所有要求都在 textformfield 的字段验证中执行。我只使用一个 formkey 并使用 formkey.validate 来验证要求是否被接受，但它不起作用，我不知道如何以不同的方式尝试。
class CreateAccountPage extends StatefulWidget {
CreateAccountPage({Key? key}) : super(key: key);
@override
_CreateAccountPageState createState() => _CreateAccountPageState();
}
class _CreateAccountPageState
extends ModularState<CreateAccountPage, CreateAccountController> {
static var _focusNode = FocusNode();
GlobalKey<FormState> _formKey = GlobalKey<FormState>();
bool? policy;
int currentPage = 0;
@override
void initState() {
super.initState();
_focusNode.addListener(() {
setState(() {});
print('Has focus: $_focusNode.hasFocus');
});
}
@override
void dispose() {
_focusNode.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: PageView(
//physics: NeverScrollableScrollPhysics(),
controller: controller.pageViewController,
onPageChanged: (index) {
currentPage = index;
},
children: [
SafeArea(
child: Scaffold(
backgroundColor: AppColors.background,
body: SingleChildScrollView(
child: Stack(
children: <Widget>[
Positioned(
top: 74,
left: 48,
child: Image.asset(
'assets/images/logo_budget.png',
height: 53.85,
width: 100,
),
),
Positioned(
top: 144,
left: 48,
child: SizedBox(
width: 255.0,
height: 118.0,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Bem-Vindo!',
style: TextStyles.h3HeadCreateAccount,
),
Text(
"Por favor insira seus dados nos campos abaixo.",
style: TextStyles.h6HeadCreateAccount,
)
],
),
),
),
Container(
padding: EdgeInsets.only(top: 419, left: 48, right: 48),
child: Form(
key: formKey[0],
child: Column(
children: [
Padding(
padding: const EdgeInsets.all(16.0),
child: AppTextFormFieldWidget(
controller: controller.nameCreate,
hintText: 'Nome',
labelText: 'Nome',
//validator: (value) =>
),
),
Padding(
padding: const EdgeInsets.all(16.0),
child: AppTextFormFieldWidget(
controller: controller.emailCreate,
labelText: 'E-Mail',
hintText: 'E-Mail',
validator: (value) => InputValidators()
.emailValidator(value ?? ""),
),
),
],
),
),
),
],
),
),
),
),
SafeArea(
child: Scaffold(
backgroundColor: AppColors.background,
body: SingleChildScrollView(
child: Stack(
children: <Widget>[
Positioned(
top: 74,
left: 48,
child: Image.asset(
'assets/images/logo_budget.png',
height: 53.85,
width: 100,
),
),
Positioned(
top: 144,
left: 48,
child: SizedBox(
width: 255.0,
height: 86.0,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Bem-Vindo!',
style: TextStyles.h3HeadCreateAccount,
),
Text(
"Mais alguns dados.",
style: TextStyles.h6HeadCreateAccount,
)
],
),
),
),
Container(
padding: EdgeInsets.only(top: 419, left: 48, right: 48),
child: Form(
key: _formKey,
child: Column(
children: [
Padding(
padding: const EdgeInsets.all(16.0),
child: AppTextFormFieldWidget(
controller: controller.telefoneCreate,
keyboardType: TextInputType.phone,
hintText: 'Telefone',
labelText: 'Telefone',
inputFormatters: [
FilteringTextInputFormatter.digitsOnly,
TelefoneInputFormatter(),
],
validator: (value) => InputValidators()
.emailValidator(value ?? ""),
),
),
Padding(
padding: const EdgeInsets.all(16.0),
child: AppTextFormFieldWidget(
controller: controller.cpfCreate,
labelText: 'CPF',
keyboardType: TextInputType.number,
inputFormatters: [
FilteringTextInputFormatter.digitsOnly,
CpfInputFormatter(),
],
validator: (value) =>
InputValidators().passwordValidator(value!),
),
),
],
),
),
),
],
),
),
),
),
SafeArea(
child: Scaffold(
backgroundColor: AppColors.background,
body: SingleChildScrollView(
child: Stack(
children: <Widget>[
Positioned(
top: 74,
left: 48,
child: Image.asset(
'assets/images/logo_budget.png',
height: 53.85,
width: 100,
),
),
Positioned(
top: 144,
left: 48,
child: SizedBox(
width: 255.0,
height: 86.0,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Bem-Vindo!',
style: TextStyles.h3HeadCreateAccount,
),
Text(
"Leia com atenção e aceite.",
style: TextStyles.h6HeadCreateAccount,
)
],
),
),
),
Container(
padding: EdgeInsets.only(top: 274, left: 27, right: 22),
child: Column(
children: [
Container(
height: 193.0,
width: 311.0,
child: Text(
"Lorem Ipsum neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit. Ipsum neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit. Nque porro est qui dolorem ipsum quia dolor sit amet, , adipisci velit. Quisquam est qui dolorem ipsum.",
style: TextStyles.blackRoboto16400,
)),
SizedBox(
height: 30.0,
),
Row(children: [
Container(
height: 48,
width: 48,
child: Radio<bool>(
value: policy ?? true,
groupValue: policy,
toggleable: true,
onChanged: (value) {
setState(() {
policy = value;
print(policy);
});
},
),
),
Container(
height: 48,
width: 272,
child: Text(
"Eu li e aceito os termos e condições e a Política de privacidade do budget.",
style: TextStyles.blackRoboto16400,
),
)
]),
],
),
),
],
),
),
),
),
SafeArea(
child: Scaffold(
backgroundColor: AppColors.background,
body: SingleChildScrollView(
child: Stack(
children: <Widget>[
Positioned(
top: 74,
left: 48,
child: Image.asset(
'assets/images/logo_budget.png',
height: 53.85,
width: 100,
),
),
Positioned(
top: 144,
left: 48,
child: SizedBox(
width: 255.0,
height: 118.0,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Bem-Vindo!',
style: TextStyles.h3HeadCreateAccount,
),
Text(
"Agora crie sua senha contendo:",
style: TextStyles.h6HeadCreateAccount,
)
],
),
),
),
Positioned(
top: 320,
child: Container(
margin: EdgeInsets.only(left: 60, right: 48),
height: 72,
width: 267,
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
"• pelo menos oito caracteres",
style: TextStyles.blackRoboto16400,
),
//TODO Verificar o campo com Bullet Point
Text(
"• letras maiúscula, letras minúsculas, números e símbolos",
style: TextStyles.blackRoboto16400,
),
],
),
),
),
Container(
padding: EdgeInsets.only(top: 419, left: 48, right: 48),
child: Form(
key: _formKey,
child: Column(
children: [
Padding(
padding: const EdgeInsets.all(16.0),
child: AppTextFormFieldWidget(
controller: controller.passwordCreate,
hintText: 'Crie uma senha',
validator: (value) {
InputValidators().passwordValidator(value!);
}),
),
Padding(
padding: const EdgeInsets.all(16.0),
child: AppTextFormFieldWidget(
controller:
controller.passwordCreateConfirmation,
hintText: 'Confirme sua senha',
validator: (value) {
if (value !=
controller.passwordCreate.text) {
return "As senhas não coincidem";
} else {
InputValidators()
.passwordValidator(value!);
}
}),
),
],
),
),
),
],
),
),
),
),
],
),
bottomNavigationBar: Padding(
padding: const EdgeInsets.only(bottom: 8),
child: AnimatedBuilder(
animation: controller.pageViewController,
builder: (context, snapshot) {
return Padding(
padding: const EdgeInsets.only(left: 12),
child: Container(
color: Colors.white,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Container(
width: 116,
height: 48,
child: TextButton.icon(
icon: Icon(
Icons.arrow_back,
color: Color.fromRGBO(0, 0, 0, 0.26),
),
label: Text(
"VOLTAR",
style: TextStyle(
fontStyle: FontStyle.normal,
fontSize: 16,
fontFamily: "Roboto",
fontWeight: FontWeight.w500,
letterSpacing: 0.4,
textBaseline: TextBaseline.alphabetic,
color: Color.fromRGBO(0, 0, 0, 0.26),
),
),
onPressed: () {
if (currentPage == 0) {
Modular.to.popAndPushNamed('/initial');
} else {
controller.pageViewController.previousPage(
duration: Duration(milliseconds: 400),
curve: Curves.easeInOut,
);
}
},
),
),
Text("${currentPage + 1}/4",
style: TextStyles
.createAccountTextStyleBottomNavigatorNumber),
Padding(
padding: const EdgeInsets.only(right: 12),
child: ElevatedButtonWidget(
mainAlign: MainAxisAlignment.spaceBetween,
fontSize: 14,
buttonText: "CONTINUAR ",
width: 116,
height: 32,
paddingValue: 4,
sufixicon: Icon(
Icons.arrow_forward,
size: 18,
),
onpressed: () {
if (currentPage == 3 &&
_formKey.currentState!.validate() &&
policy == true) {
final user = User(
cpf: controller.cpfCreate.value.text,
name: controller.nameCreate.value.text,
email: controller.emailCreate.value.text,
password: controller.passwordCreate.value.text,
telephone: controller.telefoneCreate.value.text,
policyAccepted: policy!,
);
print(user);
// Modular.to.popAndPushNamed(
// "create_account_module/onboard");
} else {
controller.pageViewController.nextPage(
duration: Duration(milliseconds: 400),
curve: Curves.easeInOut,
);
}
}),
)
],
),
),
);
},
),
),
);
}
}
解决方案
_formKey 在 Widget 树中应该是唯一的。 https://api.flutter.dev/flutter/widgets/Widget/key.html
声明更多 GlobalKey() 并分配给每个 Form()
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