1、SearchAppBar修改右侧按钮回调

lib/widget/search_app_bar.dart

@@ -112,7 +112,11 @@ class _SearchAppBarState extends State<SearchAppBar> {
               ),
             ),
             InkWell(
-              onTap: () => widget.onRightBtnCallback ?? _search(),
+              onTap: () {
+                widget.onRightBtnCallback != null
+                    ? widget.onRightBtnCallback?.call()
+                    : _search();
+              },
               child: Container(
                 width: 60.0,
                 alignment: Alignment.center,