请帮助我我想添加,如果用户选中复选框,则应添加数量=数量+ 18%,如果不是,则仅添加数量我的密码最后的amountController = TextEditingController();
Container(
height: 50.0,
padding: EdgeInsets.only(left: 8),
margin: EdgeInsets.only(top: 8),
decoration:
BoxDecoration(border: Border.all(color: Colors.grey[300], width: 1)),
child: TextFormField(
controller: amountController,
decoration: new InputDecoration(
border: InputBorder.none,
hintStyle: new TextStyle(color: Colors.grey[500]),
hintText: "Assesment Amount",
fillColor: Colors.transparent,
),
keyboardType: TextInputType.number,
),
);
// =======复选框代码=============>
Container( child: Checkbox( value: checkBoxValue, onChanged: (value) { setState(() { checkBoxValue = value; }); }), );
// =========插入按钮代码========= =>
else if (update == false && imageFile != null) { setState(() { name = titleController.text; nameList.add(name); amountList.add(amountController.text); img.add(imageFile); titleController.clear(); amountController.clear(); imageFile = null; }); }
[请帮助我,我想添加,如果用户选中了复选框,则应该添加amount = amount + 18%,如果不是,则仅添加我的代码最终的amountController = TextEditingController();容器(...
首先,我们将String中的写入量解析为整数,以便我们可以执行计算,然后可以使用boolean checkBoxValue获取checkbox的状态。如果checkBoxValue == true,我们将输入金额变量的18%,否则我们将按原样添加金额。
else if (update == false && imageFile != null) {
setState(() {
name = titleController.text;
nameList.add(name);
int _amount = int.parse(amountController.text);
_amount = checkBoxValue ? _amount + ((18 / _amount) * 100) : _amount;
amountList.add(_amount);
img.add(imageFile);
titleController.clear();
amountController.clear();
imageFile = null;
});
}
int amount=0;
if (checkBoxValue){
amount = int.parse(amountController.text) + int.parse(amountController.text)*18/100;
}
else {
amount = int.parse(amountController.text);
}