1、SearchAppBar增加图片颜色设置

lib/widget/search_app_bar.dart

@@ -16,6 +16,7 @@ class SearchAppBar extends StatefulWidget implements PreferredSizeWidget {
   final Color? inputTextColor;
   final Color? hintTextColor;
   final Color? searchTextColor;
+  final Color? searchIconColor;
   final Function? onFocusListener;
   final String? rightText;
   final Function? onRightBtnCallback;
@@ -35,6 +36,7 @@ class SearchAppBar extends StatefulWidget implements PreferredSizeWidget {
     this.onFocusListener,
     this.rightText,
     this.onRightBtnCallback,
+    this.searchIconColor,
   }) : super(key: key);
 
   @override
@@ -82,7 +84,7 @@ class _SearchAppBarState extends State<SearchAppBar> {
                 child: Row(
                   children: <Widget>[
                     hGap10,
-                    Icon(Icons.search, color: Colors.grey.shade300),
+                    Icon(Icons.search, color: widget.searchIconColor ?? Colors.grey.shade300),
                     hGap5,
                     Expanded(
                       child: TextField(