make photo view zoomable

lib/full_screen_image_view.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
 import 'data_provider/data_provider.dart';
+import 'package:photo_view/photo_view.dart';
 
 class FullScreenImageView extends StatefulWidget {
   const FullScreenImageView(
@@ -47,8 +48,10 @@ class _FullScreenImageViewState extends State<FullScreenImageView> {
                 itemBuilder: (context, pagePosition) {
                   return Container(
                     margin: const EdgeInsets.all(10),
-                    child: Image(
-                      image: widget.provider
+                    child: PhotoView(
+                      backgroundDecoration:
+                          const BoxDecoration(color: Colors.white),
+                      imageProvider: widget.provider
                           .getImageProvider(widget.items[pagePosition].uri),
                     ),
                   );