Added permissions for viewing files

android/app/src/main/res/xml/filepaths.xml

@@ -2,4 +2,7 @@
 <resources>
     <root-path name="root" path="."/>
     <external-path name="external_storage_directory" path="." />
+    <paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <files-path name="files-path" path="../" />
+    </paths>
 </resources>

lib/ui/screens/mowadhafhi/request_details.dart

@@ -17,8 +17,10 @@ import 'package:mohem_flutter_app/models/mowadhafhi/get_ticket_transactions.dart
 import 'package:mohem_flutter_app/models/mowadhafhi/get_transaction_attachment_model.dart';
 import 'package:mohem_flutter_app/ui/screens/mowadhafhi/view_transaction_attachment.dart';
 import 'package:mohem_flutter_app/widgets/app_bar_widget.dart';
+import 'package:mohem_flutter_app/widgets/dialogs/confirm_dialog.dart';
 import 'package:open_file/open_file.dart';
 import 'package:path_provider/path_provider.dart';
+import 'package:permission_handler/permission_handler.dart';
 
 class MowadhafhiRequestDetails extends StatefulWidget {
   const MowadhafhiRequestDetails({Key? key}) : super(key: key);
@@ -263,20 +265,38 @@ class _RequestDetailsState extends State<MowadhafhiRequestDetails> {
   }
 
   void handleTransactionAttachment() async {
-    String ext = '';
-    String? rFile = getTransactionAttachmentModel!.base64String;
-    String? rFileExt = getTransactionAttachmentModel!.fileName;
 
-    ext = rFileExt!.split(".").last.toLowerCase();
+    Permission.storage.isGranted.then((isGranted) {
+      if (!isGranted) {
+        Permission.manageExternalStorage.request().then((granted) async {
+          if (granted == PermissionStatus.granted) {
+            String ext = '';
+            String? rFile = getTransactionAttachmentModel!.base64String;
+            String? rFileExt = getTransactionAttachmentModel!.fileName;
 
-    try {
-      String path = await _createFileFromString(rFile!.split("base64,").last ?? "", ext ?? "");
-      debugPrint(path);
+            ext = rFileExt!.split(".").last.toLowerCase();
 
-      print(" file here:  ${File(path).existsSync()}");
-      await OpenFile.open(path);
-    } catch (ex) {
-      Utils.showToast("Cannot open file.");
-    }
+            try {
+              String path = await _createFileFromString(rFile!.split("base64,").last ?? "", ext ?? "");
+              await OpenFile.open(path).catchError((err) {
+                print(err);
+              });
+            } catch (ex) {
+              Utils.showToast("Cannot open file.");
+            }
+          } else {
+            showDialog(
+              context: context,
+              builder: (BuildContext cxt) => ConfirmDialog(
+                message: "You need to give storage permission to view files.",
+                onTap: () {
+                  Navigator.pop(context);
+                },
+              ),
+            );
+          }
+        });
+      }
+    });
   }
 }