feat(update):更新时间组件星期显示

example/lib/main.dart

@@ -64,7 +64,7 @@ class _MyHomePageState extends State<MyHomePage> {
                 tapAction: (value) {
                   final startTime = value['startTime'] as DateTime?;
                   setState(() {
-                    _singleDateText = _formatDate(startTime);
+                    _singleDateText = _formatDateWithWeekday(startTime);
                   });
                 },
               ),
@@ -194,4 +194,14 @@ class _MyHomePageState extends State<MyHomePage> {
       dateTimeUtilsType: DateTimeUtilsType.yearMonthDay,
     );
   }
+
+  String _formatDateWithWeekday(DateTime? date) {
+    if (date == null) {
+      return '未选择';
+    }
+    return '${DateTimeUtils.dateTimeUtilsTool(
+      dateTime: date.toIso8601String(),
+      dateTimeUtilsType: DateTimeUtilsType.yearMonthDayWord,
+    )} ${DateTimeUtils.getWeekDay(date)}';
+  }
 }