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flutter - How to change ElevatedButton disabled color

Flutter - ElevatedButton Disabled Color
The ElevatedButton class represents a material design elevated button. The flutter developers can use elevated buttons to add dimension to otherwise mostly flat layouts such as in long busy lists of content, or in wide spaces. The flutter developers should avoid using elevated buttons on already-elevated content such as dialogs or cards. The flutter developers can override the ElevatedButton style with its style parameter. The static styleFrom() method is a convenient way to create an ElevatedButton ButtonStyle from simple values.

The following flutter application development tutorial will demonstrate how to set or change an ElevatedButton widget’s disabled color. Here we will use the ElevatedButton class’s style property to set the ElevatedButton disabled state’s background color. We also disabled the ElevatedButton to test its disabled state color.

The ElevatedButton class’s style property value is a ButtonStyle object which customizes this button's appearance.

The ButtonStyle class represents the visual properties that most buttons have in common. The ButtonStyle class’s all properties are null by default.

ButtonStyle class’s many properties are MaterialStateProperty objects which resolve to different values depending on the button's state. The material state properties represent values that depend on a widget's material state.

The MaterialStateProperty resolveWith() is a convenient method for creating a MaterialStateProperty from a MaterialPropertyResolver function alone.

The flutter developers can set or change the disabled state color of an ElevatedButton by sending a value to the ButtonStyle class’s backgroundColor property. Here we only set the background color for the material’s disabled state.

The ButtonStyle class’s backgroundColor property defines the button's background fill color.

The MaterialState enum represents the interactive states that some of the Material widgets can take on when receiving input from the user.

The MaterialState disabled const represents the state when this widget is disabled and cannot be interacted with. Disabled widgets should not respond to hover, focus, press, or drag interactions. We will set a background color for this disabled state of the ElevatedButton.

The flutter developers can set the value to null for onPressed and onLongPress callbacks to disable the ElevatedButton widget. Here we don’t assign the onLongPress callback. And we set the onPressed callbacks value to null to make the ElevatedButton disabled.
main.dart

import 'package:flutter/material.dart';

void main(){
  runApp(
      MaterialApp(
        home: Scaffold(
          appBar: AppBar(
              title: const Text("ElevatedButton Disabled Color")
          ),
          body: Center(
              child: ElevatedButton(
                onPressed: null,
                child: const Text("Click Me"),
                style: ButtonStyle(
                    backgroundColor: MaterialStateProperty
                        .resolveWith((states){
                      if(states.contains(MaterialState.disabled)){
                        return Colors.green.shade100;
                      }
                    })
                ),
              )
          ),
        ),
      )
  );
}
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