use DropdownMenu in feed

Author: TheHCJ

lib/home/_feed.dart

@@ -73,23 +73,25 @@ class _FeedScreenState extends State<FeedScreen>
                 pinned: false,
                 snap: true,
                 floating: true,
-                title: DropdownButton(
-                    padding: EdgeInsets.only(left: 8),
-                    underline: Container(),
-                    value: _tabValue,
-                    style: Theme.of(context).appBarTheme.titleTextStyle,
-                    onChanged: (value) => setState(() {
-                          if (value == L10n.current.foryou) {
-                            _tab = 1;
-                          } else if (value == L10n.current.following) {
-                            _tab = 0;
-                          }
-                          _tabValue = value;
-                        }),
-                    items: [
-                      DropdownMenuItem(value: L10n.current.following, child: Text(L10n.current.following)),
-                      DropdownMenuItem(value: L10n.current.foryou, child: Text(L10n.current.foryou))
-                    ]),
+                title: Padding(
+                    padding: const EdgeInsets.all(8.0),
+                    child: DropdownMenu(
+                        inputDecorationTheme: InputDecorationTheme(
+                            isDense: true, border: OutlineInputBorder(borderRadius: BorderRadius.circular(12))),
+                        initialSelection: L10n.current.following,
+                        textStyle: Theme.of(context).appBarTheme.titleTextStyle,
+                        onSelected: (value) => setState(() {
+                              if (value == L10n.current.foryou) {
+                                _tab = 1;
+                              } else if (value == L10n.current.following) {
+                                _tab = 0;
+                              }
+                              _tabValue = value;
+                            }),
+                        dropdownMenuEntries: [
+                          DropdownMenuEntry(value: L10n.current.following, label: L10n.current.following),
+                          DropdownMenuEntry(value: L10n.current.foryou, label: L10n.current.foryou)
+                        ])),
                 actions: _tab == 1
                     ? [
                         IconButton(