更新下拉刷新偏移量

lib/widgets/refresh/refresh_header/refresh_header.dart

@@ -12,12 +12,10 @@ class RefreshHeader extends StatelessWidget {
   Widget build(BuildContext context) {
     // double top = MediaQueryData.fromWindow(window).padding.top;
     return CustomHeader(
-      height: _height + offsetY,
+      height: _height,
       builder: (BuildContext context, RefreshStatus mode) {
-        return Container(
-          margin: EdgeInsets.only(top: offsetY),
-          // color: Colors.blue,
-          width: double.infinity,
+        return Transform.translate(
+          offset: Offset(0, offsetY),
           child: Center(
             child: Container(
               width: 36,
@@ -28,7 +26,6 @@ class RefreshHeader extends StatelessWidget {
               ),
             ),
           ),
-          // color: Colors.blue,
         );
       },
     );