How to create dropdow widget when click on button?

image description here

so how to create it? I tried to find out but still can’t find a way

>Solution :

You can simply use a dropdown widget and wrap it with visibility widget which will be updated on the basis of that button click:

        bool visible=false;

        ElevatedButton(onPressed: (){
          visible=!visible;    //onPressing the click button it will update visible variable
        }, child: Text('Click')),

        Visibility(
          visible: visible,    //which will make the dropdown visible
            child: DropdownButton(items: items, onChanged: (){}))