Does this widget allow you to open the button programmatically? about dropdown_button2

[AhmedLSayed9]

Upgrade to latest version. Here's an example of how to do it:

  final dropdownKey = GlobalKey<DropdownButton2State>();
  final List<String> items = [
    'Item1',
    'Item2',
    'Item3',
    'Item4',
  ];
  String? selectedValue;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            GestureDetector(
              onTap: () {
                dropdownKey.currentState!.callTap();
              },
              child: Container(
                height: 100,
                width: 100,
                color: Colors.red,
              ),
            ),
            DropdownButtonHideUnderline(
              child: DropdownButton2(
                key: dropdownKey,
                hint: Text(
                  'Select Item',
                  style: TextStyle(
                    fontSize: 14,
                    color: Theme.of(context).hintColor,
                  ),
                ),
                items: items
                    .map((item) => DropdownMenuItem<String>(
                          value: item,
                          child: Text(
                            item,
                            style: const TextStyle(
                              fontSize: 14,
                            ),
                          ),
                        ))
                    .toList(),
                value: selectedValue,
                onChanged: (value) {
                  setState(() {
                    selectedValue = value as String;
                  });
                },
                buttonHeight: 40,
                buttonWidth: 140,
                itemHeight: 40,
              ),
            ),
          ],
        ),
      ),
    );
  }