control & disable a dropdown button in flutter?

Question

I wanted to control a drop-down button and make it unclickable using a button.

Is there any way to make it disable. Basically not allowing it able to change.

new DropdownButton(           value: animalName,           items: animals.map(             (String value) {               return new DropdownMenuItem<String>(                 value: value,                 child: new Text('$value'),               );             },           ).toList(),           onChanged: (value) {             setState(() {               animalName = value;             });           },         ), 

So this is the code I currently use on the drop-down button, but i cant disabled it.

Answer 1

Found this in the DropdownButton docs:

If items or onChanged is null, the button will be disabled, the down arrow will be grayed out, and the disabledHint will be shown (if provided)

DropdownButton(   onChanged: null,   items: [...], )