Flutter DropdownSearch

Simple and reactive DropdownSearch with item search feature, making it possible to use an offline item list or filtering URL for easy customization.

Key Features • Examples • License

Key Features

• Reactive widget
• Infinite list (lazy loading)
• Sync and/or Async items (online, offline, DB, ...)
• Searchable dropdown
• Support multi level items
• Four dropdown mode: Menu/ BottomSheet/ ModalBottomSheet / Dialog
• Single & multi selection
• Material dropdown
• Adaptive UI : Material, IOS [coming soon]
• Easy customizable UI - No Boilerplate
• Handle Light and Dark theme
• Easy implementation into statelessWidget

pubspec.yaml

dropdown_search: <lastest version>

Import

import 'package:dropdown_search/dropdown_search.dart';

Simple implementation

See here

DropdownSearch<String>(
  items: (f, cs) => ["Item 1", 'Item 2', 'Item 3', 'Item 4'],
  popupProps: PopupProps.menu(
    disabledItemFn: (item) => item == 'Item 3',
    fit: FlexFit.loose
  ),
),

DropdownSearch<String>.multiSelection(
  mode: Mode.CUSTOM,
  items: (f, cs) => ["Monday", 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'],
  dropdownBuilder: (ctx, selectedItem) => Icon(Icons.calendar_month_outlined, size: 54),
),

DropdownSearch<(String, Color)>(
  clickProps: ClickProps(borderRadius: BorderRadius.circular(20)),
  mode: Mode.CUSTOM,
  items: (f, cs) => [
    ("Red", Colors.red),
    ("Black", Colors.black),
    ("Yellow", Colors.yellow),
    ('Blue', Colors.blue),
  ],
  compareFn: (item1, item2) => item1.$1 == item2.$2,
  popupProps: PopupProps.menu(
  menuProps: MenuProps(align: MenuAlign.bottomCenter),
    fit: FlexFit.loose,
    itemBuilder: (context, item, isDisabled, isSelected) => Padding(
      padding: const EdgeInsets.all(8.0),
      child: Text(item.$1, style: TextStyle(color: item.$2, fontSize: 16)),
    ),
  ),
  dropdownBuilder: (ctx, selectedItem) => Icon(Icons.face, color: selectedItem?.$2, size: 54),
),

DropdownSearch<(IconData, String)>(
  selectedItem: (Icons.person, 'Your Profile'),
  compareFn: (item1, item2) => item1.$1 == item2.$2,
  items: (f, cs) => [
    (Icons.person, 'Your Profile'),
    (Icons.settings, 'Setting'),
    (Icons.lock_open_rounded, 'Change Password'),
    (Icons.power_settings_new_rounded, 'Logout'),
  ],
  decoratorProps: DropDownDecoratorProps(
    decoration: InputDecoration(
      contentPadding: EdgeInsets.symmetric(vertical: 6),
      filled: true,
      fillColor: Color(0xFF1eb98f),
      border: OutlineInputBorder(
        borderSide: BorderSide(color: Colors.transparent),
        borderRadius: BorderRadius.circular(8),
      ),
      focusedBorder: OutlineInputBorder(
        borderSide: BorderSide(color: Colors.transparent),
        borderRadius: BorderRadius.circular(8),
      ),
      enabledBorder: OutlineInputBorder(
        borderSide: BorderSide(color: Colors.transparent),
        borderRadius: BorderRadius.circular(8),
      ),
    ),
  ),
  dropdownBuilder: (context, selectedItem) {
    return ListTile(
      leading: Icon(selectedItem!.$1, color: Colors.white),
      title: Text(
        selectedItem.$2,
        style: TextStyle(color: Colors.white, fontSize: 18, fontWeight: FontWeight.bold),
      ),
    );
  },
  popupProps: PopupProps.menu(
    itemBuilder: (context, item, isDisabled, isSelected) {
      return ListTile(
        contentPadding: EdgeInsets.symmetric(vertical: 8, horizontal: 12),
        leading: Icon(item.$1, color: Colors.white),
        title: Text(
          item.$2,
          style: TextStyle(color: Colors.white, fontSize: 18, fontWeight: FontWeight.bold),
        ),
      );
    },
    fit: FlexFit.loose,
    menuProps: MenuProps(
      backgroundColor: Colors.transparent,
      elevation: 0,
      margin: EdgeInsets.only(top: 16),
    ),
    containerBuilder: (ctx, popupWidget) {
      return Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.end,
        children: [
          Padding(
            padding: const EdgeInsets.only(right: 12),
            child: Image.asset(
              'assets/images/arrow-up.png',
              color: Color(0xFF1eb98f),
              height: 14,
            ),
          ),
          Flexible(
            child: Container(
              decoration: BoxDecoration(
                color: Color(0xFF1eb98f),
                shape: BoxShape.rectangle,
                borderRadius: BorderRadius.circular(8),
              ),
              child: popupWidget,
            ),
          ),
        ],
      );
    },
  ),
),

DropdownSearch<String>(
  items: (filter, infiniteScrollProps) => ['Item 1', 'Item 2', 'Item 3'],
  suffixProps: DropdownSuffixProps(
    dropdownButtonProps: DropdownButtonProps(
      iconClosed: Icon(Icons.keyboard_arrow_down),
      iconOpened: Icon(Icons.keyboard_arrow_up),
    ),
  ),
  decoratorProps: DropDownDecoratorProps(
    textAlign: TextAlign.center,
    decoration: InputDecoration(
      contentPadding: EdgeInsets.symmetric(vertical: 20),
      filled: true,
      fillColor: Colors.white,
      border: OutlineInputBorder(
        borderSide: BorderSide(color: Colors.transparent),
        borderRadius: BorderRadius.circular(12),
      ),
      focusedBorder: OutlineInputBorder(
        borderSide: BorderSide(color: Colors.transparent),
        borderRadius: BorderRadius.circular(12),
      ),
      enabledBorder: OutlineInputBorder(
        borderSide: BorderSide(color: Colors.transparent),
        borderRadius: BorderRadius.circular(12),
      ),
      hintText: 'Please select...',
      hintStyle: TextStyle(fontWeight: FontWeight.bold, fontSize: 18, color: Colors.grey),
    ),
  ),
  popupProps: PopupProps.menu(
    itemBuilder: (context, item, isDisabled, isSelected) {
      return Padding(
        padding: const EdgeInsets.symmetric(vertical: 12.0),
        child: Text(
          item,
          style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
          textAlign: TextAlign.center,
        ),
      );
    },
    constraints: BoxConstraints(maxHeight: 160),
    menuProps: MenuProps(
      margin: EdgeInsets.only(top: 12),
      shape: const RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(12))),
    ),
  ),
),

DropdownSearch<UserModel>.multiSelection(
  items: (filter, s) => getData(filter),
  compareFn: (i, s) => i.isEqual(s),
  popupProps: PopupPropsMultiSelection.bottomSheet(
    bottomSheetProps: BottomSheetProps(backgroundColor: Colors.blueGrey[50]),
    showSearchBox: true,
    itemBuilder: userModelPopupItem,
    suggestedItemProps: SuggestedItemProps(
      showSuggestedItems: true,
      suggestedItems: (us) {
        return us.where((e) => e.name.contains("Mrs")).toList();
      },
    ),
  ),
),

DropdownSearch<int>(
  items: (f, cs) => List.generate(30, (i) => i + 1),
  decoratorProps: DropDownDecoratorProps(
    decoration: InputDecoration(labelText: "Dialog with title", hintText: "Select an Int"),
  ),
  popupProps: PopupProps.dialog(
    title: Container(
      decoration: BoxDecoration(color: Colors.deepPurple),
      alignment: Alignment.center,
      padding: EdgeInsets.symmetric(vertical: 16),
      child: Text(
        'Numbers 1..30',
        style: TextStyle(fontSize: 21, fontWeight: FontWeight.bold, color: Colors.white70),
      ),
    ),
    dialogProps: DialogProps(
      clipBehavior: Clip.antiAlias,
      shape: OutlineInputBorder(
        borderSide: BorderSide(width: 0),
        borderRadius: BorderRadius.circular(25),
      ),
    ),
  ),
),

Layout customization

You can customize the layout of the DropdownSearch and its items. click here for more examples.

Full documentation here

DropdownSearch Anatomy

Support

If this plugin was useful to you, helped you to deliver your app, saved you a lot of time, or you just want to support the project, I would be very grateful if you buy me a cup of coffee.

License

MIT