searchable_spinner_multiselect

A modern Flutter searchable multi-select widget with:

• Multi-selection
• Search/filter
• Select All
• Clear All
• Selected count
• Maximum selection
• Async/API search
• Debounced search
• Pagination / load-more
• Custom item builder
• Custom selected text
• Form validation
• Material 3 responsive UI
• No runtime third-party dependencies

Install

dependencies:
  searchable_spinner_multiselect: ^1.0.0

Then:

flutter pub get

Basic usage

import 'package:searchable_spinner_multiselect/searchable_spinner_multiselect.dart';

SearchableMultiSelect<Customer>(
  items: customers,
  values: selectedCustomers,
  itemLabel: (customer) => customer.name,
  label: 'Customers',
  maxSelection: 10,
  onChanged: (values) {
    setState(() => selectedCustomers = values);
  },
);

Async search

SearchableMultiSelect<Product>.async(
  values: selectedProducts,
  itemLabel: (product) => product.name,
  search: (query) => repository.searchProducts(query),
  loadMore: (query, page) {
    return repository.searchProducts(query, page: page);
  },
  onChanged: (values) {
    setState(() => selectedProducts = values);
  },
);

Important Select All behavior

For local data, Select All selects all currently visible filtered items.

For async/paginated data, Select All applies to the currently loaded/visible results. It does not claim to select records that have not been loaded from the server.

Validation

Form(
  child: SearchableMultiSelect<Customer>(
    items: customers,
    values: selectedCustomers,
    itemLabel: (customer) => customer.name,
    validator: (values) {
      if (values == null || values.isEmpty) {
        return 'Please select at least one customer';
      }
      return null;
    },
    onChanged: (values) {
      setState(() => selectedCustomers = values);
    },
  ),
)

Development

flutter pub get
dart format .
flutter analyze
flutter test
dart doc
dart pub publish --dry-run

The package follows the standard Dart package structure with public APIs in lib/, implementation under lib/src/, tests in test/, and an example under example/.