dart - Full width DropdownButton with adjust dropdown arrow icon in Flutter

Dart - Full width DropdownButton with adjust dropdown arrow icon in Flutter

To create a full-width DropdownButton in Flutter and adjust the dropdown arrow icon, you can wrap it inside a Container or SizedBox and set its width to double.infinity. Then, you can customize the dropdown arrow icon using the icon property of the DropdownButton.

Here's a basic example:

import 'package:flutter/material.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( appBar: AppBar( title: Text('Dropdown Button Example'), ), body: Center( child: Container( width: double.infinity, // Set width to full width padding: EdgeInsets.symmetric(horizontal: 16.0), child: DropdownButton<String>( isExpanded: true, // Ensures the dropdown button fills the width of its parent value: 'One', // Initial value onChanged: (String? newValue) { // Handle dropdown value change }, items: <String>['One', 'Two', 'Three', 'Four'] .map<DropdownMenuItem<String>>((String value) { return DropdownMenuItem<String>( value: value, child: Text(value), ); }).toList(), icon: Icon(Icons.arrow_drop_down), // Customize the dropdown arrow icon ), ), ), ), ); } }

In this example, isExpanded property of the DropdownButton is set to true to ensure it fills the width of its parent. The icon property is used to specify a custom icon for the dropdown arrow. Adjust the Container padding to suit your layout preferences.

Examples

  1. Flutter DropdownButton full width with custom arrow

    • Description: This query seeks methods to create a DropdownButton that spans the full width of its parent with a customized dropdown arrow icon.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Icon(Icons.arrow_drop_down, size: 24.0, color: Colors.blue), // DropdownButton items... ), )

  2. Flutter DropdownButton full width with custom dropdown arrow

    • Description: Indicates a need to create a DropdownButton that fills the entire width of its parent and uses a custom icon for the dropdown arrow.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Icon(Icons.arrow_drop_down_circle, size: 24.0, color: Colors.green), // DropdownButton items... ), )

  3. Flutter DropdownButton full width with adjusted arrow icon

    • Description: This query looks for ways to create a DropdownButton that spans the full width of its parent with an adjusted position or style for the dropdown arrow icon.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Transform.rotate( angle: math.pi / 2, // Rotate the arrow icon child: Icon(Icons.arrow_forward, size: 24.0, color: Colors.red), ), // DropdownButton items... ), )

  4. Flutter DropdownButton full width with custom dropdown icon

    • Description: Indicates a need to create a DropdownButton that fills the entire width of its parent and uses a custom icon for the dropdown.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Icon(Icons.menu, size: 24.0, color: Colors.orange), // DropdownButton items... ), )

  5. Flutter DropdownButton full width with adjusted arrow position

    • Description: This query seeks methods to create a DropdownButton that spans the full width of its parent with an adjusted position for the dropdown arrow icon.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Icon(Icons.arrow_drop_down, size: 24.0, color: Colors.blue), // DropdownButton items... ), )

  6. Flutter DropdownButton full width with custom dropdown icon

    • Description: Indicates a need to create a DropdownButton that fills the entire width of its parent and uses a custom icon for the dropdown.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Icon(Icons.arrow_drop_down_circle, size: 24.0, color: Colors.green), // DropdownButton items... ), )

  7. Flutter DropdownButton full width with rotated arrow icon

    • Description: This query looks for ways to create a DropdownButton that spans the full width of its parent with a rotated dropdown arrow icon.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Transform.rotate( angle: math.pi / 2, // Rotate the arrow icon child: Icon(Icons.arrow_forward, size: 24.0, color: Colors.red), ), // DropdownButton items... ), )

  8. Flutter DropdownButton full width with custom dropdown icon

    • Description: Indicates a need to create a DropdownButton that fills the entire width of its parent and uses a custom icon for the dropdown.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Icon(Icons.menu, size: 24.0, color: Colors.orange), // DropdownButton items... ), )

  9. Flutter DropdownButton full width with adjusted arrow position

    • Description: This query seeks methods to create a DropdownButton that spans the full width of its parent with an adjusted position for the dropdown arrow icon.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Icon(Icons.arrow_drop_down, size: 24.0, color: Colors.blue), // DropdownButton items... ), )

  10. Flutter DropdownButton full width with custom dropdown icon

    • Description: Indicates a need to create a DropdownButton that fills the entire width of its parent and uses a custom icon for the dropdown.
    Container( width: double.infinity, child: DropdownButton<String>( isExpanded: true, icon: Icon(Icons.arrow_drop_down_circle, size: 24.0, color: Colors.green), // DropdownButton items... ), )

More Tags

jquery-events formats r-markdown unique-key laravel-5.7 autoit merge floor es6-class linearlayoutmanager

More Programming Questions

More Fitness Calculators

More Stoichiometry Calculators

More Investment Calculators

More Weather Calculators