title: Flutter: Width of DropDown menu independent of Button size
body: <p>I have two <code>DropDownButton</code>s in one Row.</p>
  <pre><code>  DropdownButtonHideUnderline(
      child: DropdownButton(
        isExpanded: true,
        value: item,
        items: widget.items.map((item) {
          return DropdownMenuItem(
            value: item, 
            child: Text(
              item.toString(),
            );
        }).toList(),
        onChanged: widget.onChanged,
        selectedItemBuilder: (context) {
          return widget.items.map((item) {
            return Align(
              child: Text(
                item.toString(),
              ),
              alignment: Alignment.centerLeft,
            );
          }).toList();
        }
      )
    )
  )
  </code></pre>
  <p><a href="https://i.stack.imgur.com/RHpbD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RHpbD.png" alt="enter image description here" /></a></p>
  <p>Is there a way to stretch the width of the menu instead of keeping it the size of the button?</p>
  <p><strong>Edit:</strong></p>
  <p><a href="https://dartpad.dartlang.org/?id=49844704216a0ad1c3512a491330e3d2" rel="nofollow noreferrer">Example: Dart pad</a> (Thanks to @Diwyansh; Dropdown only uses half the width of the UI, not entire)</p>