backup.

lib/utils/util_web.dart

@@ -0,0 +1,52 @@
+
+import 'package:flutter/material.dart';
+import 'package:url_launcher/url_launcher.dart';
+import 'utils.dart';
+import 'package:hive/hive.dart';
+import 'package:hive_flutter/hive_flutter.dart';
+
+class Util {
+
+  static Future<Box> getBox() async {
+    Hive.initFlutter();
+    Box box = await Hive.openBox('wisetronic_app_data');
+    return box;
+  }
+
+  static Widget showImage(String imageUrl, {double width, double height,
+    BoxFit fit, Widget Function(BuildContext, String, dynamic) errorWidget}) {
+    return Image.network(imageUrl,
+      fit: fit,
+      width: width,
+      height: height,
+      cacheWidth: width != null ? width.round() : null,
+      cacheHeight: height != null ? height.round() : null,
+      loadingBuilder: (BuildContext context, Widget child, ImageChunkEvent loadingProgress) {
+        if (loadingProgress == null) return child;
+        return Center(
+          child: Utils.imageLoadingIndicator(),
+        );
+      },
+      errorBuilder: (BuildContext context, Object object, StackTrace stackTrace) {
+        if (errorWidget != null) {
+          return errorWidget(context, null, null);
+        }
+        return Image.asset(
+          'assets/images/not_found.png',
+          width: width,
+          height: height,
+          fit: fit,
+        );
+      },
+    );
+  }
+
+  static void openWebUrl(BuildContext context, String link) async {
+    var url = 'https://${link}';
+    if (await canLaunch(url)) {
+      await launch('$url');
+    } else {
+      print('Could not launch $url');
+    }
+  }
+}