Set ScanStreaming in package

lib/widgets/PackageScreens/Add/add_item_box.dart

@@ -1,6 +1,7 @@
 import 'package:cssd/providers/packages.dart';
 import 'package:cssd/utils/scan.dart';
 import 'package:flutter/material.dart';
+import 'package:fluttertoast/fluttertoast.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:provider/provider.dart';
 
@@ -170,23 +171,7 @@ class AddItemBox extends StatelessWidget {
                             Spacer(),
                             InkWell(
                               onTap: () {
-                                scan().then(
+                                ScanItem(isEnabled, context, index);
-                                  (String result) async {
-                                    if (result == 'cancel') {
-                                      print('cancel');
-                                    } else if (result == 'error') {
-                                      print('error');
-                                    } else if (result == 'access') {
-                                      print('access');
-                                    } else {
-                                      await Provider.of<PackageProvider>(
-                                              context,
-                                              listen: false)
-                                          .changeItemValByScan(result, index);
-                                      isEnabled = false;
-                                    }
-                                  },
-                                );
                               },
                               child: Container(
                                 padding: EdgeInsets.all(8),
@@ -257,4 +242,33 @@ class AddItemBox extends StatelessWidget {
       ),
     );
   }
+
+  void ScanItem(isEnabled, context, index) async {
+    await scan().then(
+      (String result) async {
+        if (result == 'cancel') {
+          if (index != 0)
+            await Provider.of<PackageProvider>(context, listen: false)
+                .removeItemVal();
+          print('cancel');
+        } else if (result == 'error') {
+          print('error');
+        } else if (result == 'access') {
+          print('access');
+        } else {
+          await Provider.of<PackageProvider>(context, listen: false)
+              .changeItemValByScan(result, index);
+          isEnabled = false;
+          Fluttertoast.showToast(
+            msg: "Item added.",
+            toastLength: Toast.LENGTH_SHORT,
+            gravity: ToastGravity.BOTTOM,
+          );
+          ScanItem(isEnabled, context, index += 1);
+          await Provider.of<PackageProvider>(context, listen: false)
+              .addItemVal();
+        }
+      },
+    );
+  }
 }