automatically retry message delete

lib/src/full_screen_image.dart

@@ -0,0 +1,26 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+import 'package:photo_view/photo_view.dart';
+
+class FullScreenImage extends StatelessWidget {
+  final String url;
+
+  const FullScreenImage({
+    Key key,
+    @required this.url,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      child: PhotoView(
+        imageProvider: CachedNetworkImageProvider(url),
+        maxScale: PhotoViewComputedScale.covered,
+        minScale: PhotoViewComputedScale.contained,
+        heroAttributes: PhotoViewHeroAttributes(
+          tag: url,
+        ),
+      ),
+    );
+  }
+}