improvements, all finish.

android/app/src/main/AndroidManifest.xml

@@ -1,4 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.cloudsolutions.tangheem">
     <!-- io.flutter.app.FlutterApplication is an android.app.Application that
          calls FlutterMain.startInitialization(this); in its onCreate method.
@@ -19,10 +20,10 @@
         <activity
             android:name=".MainActivity"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:exported="true"
             android:hardwareAccelerated="true"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"
-            android:exported="true"
             android:windowSoftInputMode="adjustResize">
             <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user

lib/classes/utils.dart

@@ -109,6 +109,8 @@ class Utils {
   }
 
   static void downloadFile(String url, String path, {Function(bool) onResponse}) {
+    print("url:$url");
+    print("path:$path");
     var httpClient = http.Client();
     var request = http.Request('GET', Uri.parse(url));
     var response = httpClient.send(request);
@@ -139,11 +141,13 @@ class Utils {
           bytes.setRange(offset, offset + chunk.length, chunk);
           offset += chunk.length;
         }
+        print("file writeAsBytes:${bytes.length}");
         await file.writeAsBytes(bytes);
         onResponse(true);
         return;
       }, onError: (ex) {
         debugPrint("onError:$ex");
+        onResponse(false);
       }, cancelOnError: true);
     }).onError((ex) {
       debugPrint("onError:$ex");

lib/new_ui/common_home_parent.dart

@@ -124,6 +124,7 @@ class _CommonHomeParentState extends State<CommonHomeParent> {
         child: Stack(
           children: [
             screens[index],
+            if(MediaQuery.of(context).viewInsets.bottom == 0)
             Align(
               alignment: Alignment.bottomCenter,
               child: Column(

lib/ui/screens/pdf_viewer_screen.dart

@@ -6,6 +6,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
 import 'package:path_provider/path_provider.dart';
+import 'package:permission_handler/permission_handler.dart';
 import 'package:syncfusion_flutter_pdfviewer/pdfviewer.dart';
 import 'package:tangheem/api/tangheem_user_api_client.dart';
 import 'package:tangheem/app_state/app_state.dart';
@@ -83,6 +84,11 @@ class _PdfListScreenState extends State<PdfListScreen> {
     }
   }
 
+  Future<bool> _requestStoragePermission() async {
+    Map<Permission, PermissionStatus> statuses = await [Permission.storage].request();
+    return statuses[Permission.storage].isGranted;
+  }
+
   @override
   Widget build(BuildContext context) {
     return SizedBox(
@@ -114,8 +120,12 @@ class _PdfListScreenState extends State<PdfListScreen> {
                                   "assets/icons/new/download_pdf.svg",
                                   width: 44,
                                   height: 50,
-                                ).onPress(() {
-                                  startFileDownload(contentList[index].exposeFilePath, contentList[index].fileName);
+                                ).onPress(() async {
+                                  if (await _requestStoragePermission()) {
+                                    startFileDownload(contentList[index].exposeFilePath, contentList[index].fileName);
+                                  } else {
+                                    Utils.showToast("يجب أن تعطي الإذن للتنزيل.");
+                                  }
                                 }),
                                 7.width,
                                 ClipRRect(
@@ -194,6 +204,5 @@ class PdfViewerScreen extends StatelessWidget {
       pageSpacing: 0,
       // pageLayoutMode:PdfPageLayoutMode.single
     );
-
   }
 }