Flutter: Setting the height of the AppBar

You can use PreferredSize:

class MyApp extends StatelessWidget {  @override  Widget build(BuildContext context) {    return MaterialApp(      title: 'Example',      home: Scaffold(        appBar: PreferredSize(          preferredSize: Size.fromHeight(50.0), // here the desired height          child: AppBar(            // ...          )        ),        body: // ...      )    );  }}

You can use PreferredSize and flexibleSpace for it:

appBar: PreferredSize(  preferredSize: Size.fromHeight(100.0),  child: AppBar(    automaticallyImplyLeading: false, // hides leading widget    flexibleSpace: SomeWidget(),  )),

This way you can keep the elevation of AppBar for keeping its shadow visible and have custom height, which is what I was just looking for. You do have to set the spacing in SomeWidget, though.

Use toolbarHeight:

There's no longer a need to use PreferredSize. Use toolbarHeight with flexibleSpace.

AppBar(  toolbarHeight: 120, // Set this height  flexibleSpace: Container(    color: Colors.orange,    child: Column(      children: [        Text('1'),        Text('2'),        Text('3'),        Text('4'),      ],    ),  ),)