Future<List<ProductModel>> getcustomer(String filter, BuildContext context) async {
print('Searching with filter: $filter'); // Debugging line
final data = Provider.of<MaterialPickupProvider>(context, listen: false);
// Make API call
await data.FetchCalibrationcustomer(filter);
print('Fetched customers: ${data.fetchcustomer.length}'); // Debugging line
return data.fetchcustomer; // Returning fetched customers
}
Consumer<MaterialPickupProvider>(builder: (context,calibprov,child){
return Container(
padding: EdgeInsets.only(left: 2.0.w),
// height: 5.0.h,
width: 70.0.w,
decoration: BoxDecoration(
border: Border.all(
color: Colors.black45, // Set border color here
),
borderRadius: BorderRadius.circular(5.0), // Optional: Set border radius
),
child: DropdownSearch<ProductModel>(
popupProps: PopupProps.menu(
showSearchBox: true,
),
asyncItems: (String filter) => getcustomer(filter, context), // Calls getcustomer for every search
itemAsString: (ProductModel u) => u.name, // Converts ProductModel to a displayable string
onChanged: (ProductModel? data) {
// Handle selection if needed
print('Selected customer: ${data?.name}');
},
dropdownDecoratorProps: DropDownDecoratorProps(
dropdownSearchDecoration: InputDecoration(
hintText: calibprov.createcustomername ?? "Contact Person",
hintStyle: TextStyle(
fontSize: 12.sp,
fontWeight: FontWeight.bold,
color: Colors.black,
),
labelStyle: TextStyle(
fontSize: 12.sp,
fontWeight: FontWeight.bold,
color: Colors.black,
),
),
),
),
);
}),
List<ProductModel> _fetchcustomer = [];
List<ProductModel> get fetchcustomer => _fetchcustomer;
Future<ProductModel?> FetchCalibrationcustomer(String searchText) async {
try {
final response = await client.searchRead(
"res.partner",
[
['name', 'ilike', searchText],
],
[
'id',
'name',
],
context: {},
limit: 20);
print("result= " + response.getResult().toString());
final extractedData = response.getResult()['records'];
print(extractedData);
final List<ProductModel> category = [];
extractedData.forEach((value) {
category.add(ProductModel(
value['id'],
value['name'],
));
});
_fetchcustomer = category;
print("||||||||||||||||||||||||||||||");
print(category);
print("||||||||||||||||||||||||||||||");
notifyListeners();
} catch (error) {
print(error.toString());
throw (error);
}
}
合作伙伴名称有超过 1000 个客户名称，当我在下拉搜索框中搜索每个单词时，第一个客户名称有 20 个名称，它需要调用 API 并直接检索最多 20 个结果，但现在在搜索其时，它首先只检索 20 个名称仅从最先下载的 20 个名称中搜索。
您可以使用 flutter 中的 Autocomplete Widget（内置） 就像下面的例子一样
class DropdownSearch<T extends DropAble> extends StatelessWidget {
final TextEditingController textController;
final List<T> items;
final void Function(T) onSuggestionSelected;
final bool required;
final String placeHolder;
final String label;
final String? Function(T?) validator;
const DropdownSearch({
super.key,
required this.textController,
required this.items,
required this.onSuggestionSelected,
this.required = false,
this.label = "",
this.placeHolder = "",
required this.validator,
});
@override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.symmetric(vertical: 14),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
"${required ? "* " : ""}$label",
style: Theme.of(context).textTheme.labelMedium,
),
const SizedBox(
height: 14,
),
RawAutocomplete<String>(
optionsBuilder: (TextEditingValue textEditingValue) {
return items.map((e)=>e.name ?? "").toList()
.where((item) =>
(item).toLowerCase().contains(textEditingValue.text.toLowerCase()))
.toList();
},
onSelected: (String selection) {
textController.text = selection;
T? item = items.firstWhereOrNull((element) => element.name == selection);
if (item != null) {
onSuggestionSelected(item);
}
},
fieldViewBuilder: (
BuildContext context,
TextEditingController textEditingController,
FocusNode focusNode,
VoidCallback onFieldSubmitted,
) {
return TextFormField(
controller: textEditingController,
decoration: InputDecoration(
hintText: placeHolder,
),
focusNode: focusNode,
onFieldSubmitted: (String value) {
T? item = items.firstWhereOrNull((element) => element.name == value);
onFieldSubmitted();
if (item != null) {
onSuggestionSelected(item);
}
},
// validator: vali,
);
},
optionsViewBuilder: (
BuildContext context,
AutocompleteOnSelected<String> onSelected,
Iterable<String> options,
) {
return Align(
alignment: Get.locale?.languageCode == "ar" ? Alignment.topRight : Alignment.topLeft,
child: Material(
elevation: 4.0,
child: SizedBox(
width: Get.width-70,
child: ListView.builder(
shrinkWrap: true,
padding: const EdgeInsets.all(8.0),
itemCount: options.length,
itemBuilder: (BuildContext context, int index) {
final option = options.elementAt(index);
return GestureDetector(
onTap: () {
textController.text = option;
onSelected(option);
T? item = items.firstWhereOrNull((element) => element.name == option);
if(item != null){
onSuggestionSelected(item);
}
},
child: ListTile(
title: Text(option),
),
);
},
),
),
),
);
},
),
const SizedBox(
height: 14,
),
],
),
);
}
}