add payment

lib/pages/widgets/show_img.dart

@@ -1,6 +1,7 @@
 import 'dart:io';
 
 import 'package:fcs/helpers/theme.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:photo_view/photo_view.dart';
 
@@ -21,12 +22,19 @@ class _ShowImageState extends State<ShowImage> {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
+        leading: new IconButton(
+          icon: new Icon(Icons.close),
+          onPressed: () => Navigator.of(context).pop(),
+        ),
         backgroundColor: primaryColor,
-        title: Text(widget.fileName, style: TextStyle(color: Colors.white)),
+        shadowColor: Colors.transparent,
         iconTheme: new IconThemeData(color: Colors.white),
       ),
       body: Center(
           child: PhotoView(
+              backgroundDecoration: const BoxDecoration(
+                color: primaryColor,
+              ),
               imageProvider: widget.url != null
                   ? NetworkImage(widget.url)
                   : widget.imageFile != null