dart 如何在Flutter中使用CheckBox将数据从一个TextFormField复制到另一个TextFormField

kse8i1jr  于 2023-07-31  发布在  Flutter
关注(0)|答案(4)|浏览(120)

我有两个文本字段Billing Address和Shipping Address当用户在文本字段中输入帐单地址，我想复制这些数据到我的送货地址字段由checkBox。我不希望用户再次把数据在送货地址字段，如果用户Shipping和Billing Address是相同的。
以下是我的班级：

class Shipping_Address_Page extends StatefulWidget {
  const Shipping_Address_Page({Key? key}) : super(key: key);

  @override
  State<Shipping_Address_Page> createState() => _Shipping_Address_PageState();
}

class _Shipping_Address_PageState extends State<Shipping_Address_Page> {
    bool sameAddress = false;

 //===================================billing controller===============================
  late TextEditingController UserBilling_Name_Controller =TextEditingController(text: UserBillingNAme);
    late TextEditingController UserBilling_Email_Controller =TextEditingController(text: UserBillingEmail);

//===================================shipping===============================
  late TextEditingController UserShipping_NAme_Controller =TextEditingController(text: UserShippingNAme);
  late TextEditingController UserShipping_Email_Controller =TextEditingController(text: UserShippingEmail);

字符串
textform字段的Ui代码

Column(
        mainAxisAlignment: MainAxisAlignment.start,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          FutureBuilder(
              future: PredefinedAddressModel_Api(),
              builder: (BuildContext context, AsyncSnapshot snapshot) {
                if (snapshot.connectionState != ConnectionState.done) {
                  return Center(
                      child:
                          CupertinoActivityIndicator());
                }
                if (snapshot.hasData) {
                  return Column(
                    crossAxisAlignment: CrossAxisAlignment.stretch,
                    children: [

 //=================================Billing address=============================

                      Container(
                          decoration: BoxDecoration(
                              borderRadius: BorderRadius.circular(15),
                              color: Color(0xFFE4D8DC)),
                          child: Padding(
                            padding: EdgeInsets.symmetric(
                                horizontal: getProportionateScreenWidth(20),
                                vertical: getProportionateScreenHeight(30)),
                            child: Column(
                              children: [
                                Container(
                                  decoration: BoxDecoration(
                                    color: Color(0xFFf0f0f0),
                                    borderRadius: BorderRadius.circular(15),
                                  ),
                                  margin: EdgeInsets.all(10),
                                  child: TextFormField(
                                     textCapitalization: TextCapitalization.sentences,
                                    controller: UserBilling_Name_Controller,//===Controller
                                    decoration: InputDecoration(
                                        contentPadding: EdgeInsets.symmetric(
                                            horizontal:
                                                getProportionateScreenWidth(20),
                                            vertical:
                                                getProportionateScreenWidth(
                                                    15)),
                                        border: InputBorder.none,
                                        focusedBorder: InputBorder.none,
                                        labelText: "Name",
                                        enabledBorder: InputBorder.none,
                                        hintText: "Your name",
                                        hintStyle: TextStyle(
                                            color:
                                                Colors.black.withOpacity(0.4)),
                                        prefixIcon:
                                            Icon(Icons.account_circle,size: 13.0)),
                                  ),
                                ),



                                                     
   //===================================Shipping===============================

                      SizedBox(height: getProportionateScreenHeight(20),),
                      Padding(
                          padding: EdgeInsets.only(left: 8.0, bottom: 16),
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              SizedBox(
                                height: getProportionateScreenHeight(20),
                              ),
                              Text(
                                "Shipping address",
                                style: TextStyle(
                                    fontSize: getProportionateScreenHeight(30),
                                    color: Colors.black,
                                    fontFamily: 'Gilroy',
                                    fontWeight: FontWeight.w700),
                              ),
                            ],
                          ),
                        ),

                     SizedBox(height: getProportionateScreenHeight(20),),

  

 //=================================check box=====================================
                         Row(
                  children: [
                    Checkbox(
                      value: sameAddress, //false
                      activeColor: Colors.green,
                      onChanged: (value) {
                          setState(() {
                          sameAddress = value!;
                        });
                      },
                    ),
                    Text("Ship to Same address?"),
                  ],
                ),
                         

 //=====================================================================================



                      Container(
                          decoration: BoxDecoration(
                              borderRadius: BorderRadius.circular(15),
                              color: Color(0xFFC8E3D4)),
                          child: Padding(
                            padding: EdgeInsets.symmetric(
                                horizontal: getProportionateScreenWidth(20),
                                vertical: getProportionateScreenHeight(30)),
                            child: Column(
                              children: [
                                Container(
                                  decoration: BoxDecoration(
                                    color: Color(0xFFf0f0f0),
                                    borderRadius: BorderRadius.circular(15),
                                  ),
                                  margin: EdgeInsets.all(10),
                                  child: TextFormField(
                                     textCapitalization: TextCapitalization.sentences,
                                    controller: UserShipping_NAme_Controller,//===Controller
                                    decoration: InputDecoration(
                                        contentPadding: EdgeInsets.symmetric(
                                            horizontal:
                                                getProportionateScreenWidth(20),
                                            vertical:
                                                getProportionateScreenWidth(
                                                    15)),
                                        border: InputBorder.none,
                                        focusedBorder: InputBorder.none,
                                        labelText: "Name",
                                        enabledBorder: InputBorder.none,
                                        hintText: "Your name",
                                        hintStyle: TextStyle(
                                            color:
                                                Colors.black.withOpacity(0.4)),
                                        prefixIcon:
                                            Icon(Icons.account_circle,size: 13.0)),
                                  ),
                                ),

型

dart

4条答案

按热度按时间
yftpprvb

yftpprvb1#

Row(
   children: [
      Checkbox(
         value: sameAddress, //false
         activeColor: Colors.green,
         onChanged: (value) {
            setState(() {
               UserShipping_NAme_Controller.text = UserBilling_Name_Controller.text;
               UserShipping_Email_Controller.text = UserBilling_Email_Controller.text;
            });
         },
      ),
      Text("Ship to Same address?"),
   ],
),

字符串
用以下代码替换包含复选框的行。

赞(0）分享  回复(0）举报  2023-07-31
a5g8bdjr

a5g8bdjr2#

您可以在需要时将controller的值显式设置到setState中。

billingTextController.text = shippingTextController.text;

字符串

赞(0）分享  回复(0）举报  2023-07-31
b4lqfgs4

b4lqfgs43#

您可以添加2个控制器，并根据复选框的值将这两个控制器等同起来

late TextEditingController UserBilling_Address_Controller =TextEditingController(text: UserBillingAddress);
late TextEditingController UserShipping_Address_Controller =TextEditingController(text: UserShippingAddress);

字符串
复选框onChange

UserShipping_Address_Controller = value ? UserBilling_Address_Controller.text : ""

型

赞(0）分享  回复(0）举报  2023-07-31
vcudknz3

vcudknz34#

试试下面的代码希望对你有帮助。
创建TextEditingController()变量

final shippingController = TextEditingController();
  final billingController = TextEditingController();

字符串
复选框的boolaen变量：

bool isChecked = false;

型
您的小工具：

Column(
                    children: [
                      TextFormField(
                        controller: shippingController,
                        decoration: InputDecoration(
                          labelText: 'shipping address',
                          border: OutlineInputBorder(),
                        ),
                      ),
                      TextFormField(
                        controller: billingController,
                        decoration: InputDecoration(
                          labelText: 'billing address',
                          border: OutlineInputBorder(),
                        ),
                      ),
                      SizedBox(
                        height: 50,
                      ),
                      Row(
                        children: [
                          Checkbox(
                            value: isChecked, //false
                            activeColor: Colors.green,
                            onChanged: (value) {
                              setState(() {
                                billingController.text =
                                    shippingController.text;
                              });
                            },
                          ),
                          Text("Ship to Same address?"),
                        ],
                      ),
                    ],
                  ),

型
结果屏幕>

赞(0）分享  回复(0）举报  2023-07-31
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