How to Disable Drawer Hamburger Icon Button in Flutter

In this example, we are going to show you how to disable the drawer hamburger icon button which appears on AppBar whenever you add a drawer to the scaffold in Flutter. Hamburger icon is appeared automatically after adding drawer to scaffold.

AppBar(
  automaticallyImplyLeading: false,
)

See this also: How to Change Drawer Icon in Flutter

You have to make automaticallyImplyLeading to false to disable the automatic icon on the leading of AppBar. The automatic icons like drwaer icons, back button will be disabled using this code.

After, disabling the drawer hamburger icon button, you may need to open or close the drawer programmatically, see the example below to learn how to do it.

See: How to Open or Close Drawer Programmatically in Flutter

import 'package:flutter/material.dart';

void main(){
  runApp(MyApp());
}

class MyApp extends StatelessWidget{
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Home(),
    );
  }
}

class Home extends StatefulWidget{
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {  

  final scaffoldKey = GlobalKey<ScaffoldState>();

  @override
  Widget build(BuildContext context) { 
    return  Scaffold(
          key: scaffoldKey,
          appBar: AppBar(
            title: Text("My AppBar"),
            automaticallyImplyLeading: false,
          ),

          drawer: Drawer(),
          
          body: Container(
              child: ElevatedButton( 
                 onPressed: (){
                      //open or close drawer manually
                      if(scaffoldKey.currentState!.isDrawerOpen){
                          scaffoldKey.currentState!.closeDrawer();
                          //close drawer, if drawer is open
                      }else{
                          scaffoldKey.currentState!.openDrawer();
                          //open drawer, if drawer is closed
                      }
                 },
                 child: Text("Open/Close Drawer"),
              )
          )
       );
  }
}