position the message banner as the top of the column rather than stack (#411)

Author: PaulAllanSturm

lib/samples/display_content_of_utility_network_container/display_content_of_utility_network_container.dart

@@ -94,13 +94,30 @@ class _DisplayContentOfUtilityNetworkContainerState
   Widget build(BuildContext context) {
     return Scaffold(
       body: SafeArea(
-        top: false,
         left: false,
         right: false,
         child: Stack(
           children: [
             Column(
               children: [
+                // Add a banner to show the results of the identify operation.
+                Visibility(
+                  visible: _message.isNotEmpty,
+                  child: Container(
+                    padding: const EdgeInsets.all(5),
+                    color: Colors.grey[400],
+                    child: Row(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
+                        Text(
+                          _message,
+                          textAlign: TextAlign.center,
+                          style: Theme.of(context).textTheme.labelMedium,
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
                 Expanded(
                   // Add a map view to the widget tree and set a controller.
                   child: ArcGISMapView(
@@ -126,31 +143,6 @@ class _DisplayContentOfUtilityNetworkContainerState
                 ),
               ],
             ),
-            // Add a banner to show the results of the identify operation.
-            SafeArea(
-              child: IgnorePointer(
-                child: Visibility(
-                  visible: _message.isNotEmpty,
-                  child: Container(
-                    padding: const EdgeInsets.all(5),
-                    color: Colors.white.withValues(alpha: 0.7),
-                    child: Row(
-                      mainAxisAlignment: MainAxisAlignment.center,
-                      children: [
-                        FittedBox(
-                          fit: BoxFit.scaleDown,
-                          child: Text(
-                            _message,
-                            textAlign: TextAlign.center,
-                            style: Theme.of(context).textTheme.labelMedium,
-                          ),
-                        ),
-                      ],
-                    ),
-                  ),
-                ),
-              ),
-            ),
             // Display a progress indicator and prevent interaction until state is ready.
             LoadingIndicator(visible: !_ready),
           ],