Fix: Precaching images

lib/pages/detail.dart

@@ -195,7 +195,7 @@ class _DetailPageState extends State<DetailPage> {
                                     itemBuilder: (context, index, realIdx) {
                                       return Center(
                                         child: Image.network(
-                                            item!.images[realIdx].url,
+                                            item!.images[index].url,
                                             width: min(
                                                 550,
                                                 MediaQuery.sizeOf(context)

lib/pages/main.dart

@@ -84,6 +84,11 @@ class _MainPageState extends State<MainPage> {
           filteredData = value;
           items = value;
           itemViewCount = min(5, value.length);
+          WidgetsBinding.instance.addPostFrameCallback((_) {
+            for (var element in filteredData.sublist(0, itemViewCount)) {
+              precacheImage(NetworkImage(element.images[0].url), context);
+            }
+          });
         }));
   }
 
@@ -112,7 +117,12 @@ class _MainPageState extends State<MainPage> {
       filteredData = items
           .where((element) => (element.title).contains(searchText))
           .toList();
-      itemViewCount = filteredData.length;
+      itemViewCount = min(filteredData.length, itemViewCount);
+    });
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      for (var element in filteredData.sublist(0, itemViewCount)) {
+        precacheImage(NetworkImage(element.images[0].url), context);
+      }
     });
   }
 
@@ -215,11 +225,12 @@ class _MainPageState extends State<MainPage> {
                                 shrinkWrap: true,
                                 gridDelegate:
                                     SliverGridDelegateWithFixedCrossAxisCount(
-                                  crossAxisCount: min(
+                                        crossAxisCount: min(
-                                      (MediaQuery.sizeOf(context).width ~/ 200)
+                                            (MediaQuery.sizeOf(context).width ~/
-                                          .toInt(),
+                                                    200)
-                                      8),
+                                                .toInt(),
-                                ),
+                                            8),
+                                        childAspectRatio: 1.0),
                                 itemCount: itemViewCount,
                                 itemBuilder: (context, index) {
                                   final product = filteredData[index];