title: Flutter - How can I access current selected item in DropDown from other widget?
body: <p>I have a <em>DropDown</em> in my code. I need to somehow access my currently selected item from other widget.
  How can I access this item in other widget? Can I do it with GlobalKey or constructor or anything else?</p>
  <p>Code of my DropDown:</p>
  <pre><code>              DropdownButton&lt;String&gt;(
                      items: _myList.map((String dropDownStringItem) {
                        return DropdownMenuItem&lt;String&gt;(
                          value: dropDownStringItem,
                          child: Text(dropDownStringItem),
                        );
                      }).toList(),
                      onChanged: (String newItemSelected) {
                        setState(() {
                          currentItemSelected = newItemSelected;
                        });
                      },
                      value: currentItemSelected,
                    ),
  </code></pre>