fix body height of layout builder

Frontend/patient_manager/lib/mih_components/mih_layout/mih_layout_builder.dart

@@ -66,13 +66,18 @@ class _MIHLayoutBuilderState extends State<MIHLayoutBuilder> {
 
   Widget getBody(double width, double height) {
     if (widget.pullDownToRefresh == true) {
+      return LayoutBuilder(builder: (context, BoxConstraints constraints) {
+        double newheight = constraints.maxHeight;
+        print(newheight);
         return RefreshIndicator(
           onRefresh: widget.onPullDown,
-        child: SingleChildScrollView(
+          child: ListView.builder(
-          child: SafeArea(
+            itemCount: 1,
+            itemBuilder: (BuildContext context, int index) {
+              return SafeArea(
                 child: SizedBox(
                   width: width,
-              height: height,
+                  height: newheight,
                   child: Column(
                     mainAxisAlignment: MainAxisAlignment.start,
                     children: [
@@ -81,9 +86,24 @@ class _MIHLayoutBuilderState extends State<MIHLayoutBuilder> {
                     ],
                   ),
                 ),
-          ),
+              );
+            },
+            // child: SafeArea(
+            //   child: SizedBox(
+            //     width: width,
+            //     height: height,
+            //     child: Column(
+            //       mainAxisAlignment: MainAxisAlignment.start,
+            //       children: [
+            //         getLayoutHeader(),
+            //         Expanded(child: widget.body),
+            //       ],
+            //     ),
+            //   ),
+            // ),
           ),
         );
+      });
     } else {
       return SafeArea(
         child: SizedBox(