Flutter web view update

Front_End/Rp_organic/android/app/src/main/AndroidManifest.xml

@@ -43,5 +43,20 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+
+<provider
+    android:name="androidx.core.content.FileProvider"
+    android:authorities="com.example.Rp_organic.fileprovider"
+    android:exported="false"
+    android:grantUriPermissions="true">
+    <meta-data
+        android:name="android.support.FILE_PROVIDER_PATHS"
+        android:resource="@xml/provider_paths"/>
+</provider>
+
     </application>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.CAMERA"/>
+    <uses-permission android:name="android.permission.INTERNET"/>
 </manifest>

Front_End/Rp_organic/android/app/src/main/res/xml/provider_paths.xml

+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <external-path
+        name="external_files"
+        path="." />
+</paths>
\ No newline at end of file

Front_End/Rp_organic/lib/main.dart

 import 'package:flutter/material.dart';
 import 'package:flutter_webview_pro/webview_flutter.dart';
+import 'package:modal_progress_hud/modal_progress_hud.dart';
 
 void main() => runApp(MyApp());
 
-class MyApp extends StatelessWidget {
-  @override
-  Widget build(BuildContext context) {
+
+class MyApp extends StatefulWidget {
+ @override
+ _WebViewWebPageState createState() => _WebViewWebPageState();
+}
+
+class _WebViewWebPageState extends State<MyApp> {
+ WebViewController controller;
+ bool showSpinner = true;
+ @override
+ Widget build(BuildContext context) {
+   
     return MaterialApp(
       debugShowCheckedModeBanner: false,
       title: 'Welcome to Flutter',
-      
-      home: Scaffold(
-        appBar: AppBar(
-          toolbarHeight: 70,
-          backgroundColor: Colors.teal[800],
-          title: Container(
-            child: Image.asset('assets/images/orgicheck lolgo2.png',width:300,height:100),
+      home: WillPopScope(
+        onWillPop: ()async{
+          String url = await controller.currentUrl();
+          if(url == "https://test-flask-research.herokuapp.com/"){
+            return true;
+          }else{
+            controller.goBack();
+            return false;
+          }
+        },
+        child: Scaffold(
+          body:ModalProgressHUD(
+            inAsyncCall: showSpinner,
+            child: Container(
+              child: SafeArea (
+                child: WebView(
+                  initialUrl: "https://test-flask-research.herokuapp.com/",
+                  javascriptMode: JavascriptMode.unrestricted,
+                  gestureNavigationEnabled: true,
+                  geolocationEnabled: false,//support geolocation or not
+                  onWebViewCreated: (WebViewController wc){
+                  controller = wc;
+                  },
+
+                  onPageFinished: (finished){
+                    setState(() {
+                      showSpinner = false;
+                    });
+                  },
+                ),
+              ),
+            ),
           ),
-          centerTitle: true, 
         ),
-        body: Builder(builder: (BuildContext context) {
-        return WebView(
-          initialUrl: 'https://test-flask-research.herokuapp.com/',
-          javascriptMode: JavascriptMode.unrestricted,
-          onProgress: (int progress) {
-            print("WebView is loading (progress : $progress%)");
-          },
-          navigationDelegate: (NavigationRequest request) {
-            if (request.url.startsWith('https://test-flask-research.herokuapp.com/')) {
-              print('blocking navigation to $request}');
-              return NavigationDecision.prevent;
-            }
-            print('allowing navigation to $request');
-            return NavigationDecision.navigate;
-          },
-          onPageStarted: (String url) {
-            print('Page started loading: $url');
-          },
-          onPageFinished: (String url) {
-            print('Page finished loading: $url');
-          },
-          gestureNavigationEnabled: true,
-          geolocationEnabled: false,//support geolocation or not
-        );
-      }),
       ),
     );
   }
-}
\ No newline at end of file
+}

Front_End/Rp_organic/pubspec.lock

 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.6.0"
   async:
     dependency: transitive
     description:
@@ -49,7 +56,14 @@ packages:
       name: cupertino_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "1.0.3"
+  equatable:
+    dependency: transitive
+    description:
+      name: equatable
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.6"
   fake_async:
     dependency: transitive
     description:
@@ -62,6 +76,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_application_id:
+    dependency: "direct dev"
+    description:
+      name: flutter_application_id
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -88,6 +109,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.7.0"
+  modal_progress_hud:
+    dependency: "direct main"
+    description:
+      name: modal_progress_hud
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.3"
   path:
     dependency: transitive
     description:
@@ -163,6 +191,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.7"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.1"
 sdks:
   dart: ">=2.12.0 <3.0.0"
   flutter: ">=1.22.0"

Front_End/Rp_organic/pubspec.yaml

@@ -30,14 +30,25 @@ dependencies:
   cupertino_icons: ^1.0.0
   webview_flutter: ^1.0.0
   flutter_webview_pro: ^1.0.0
+  modal_progress_hud: ^0.1.3
 
 dev_dependencies:
+  flutter_application_id: "^1.0.0"
   flutter_test:
     sdk: flutter
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
 
+flutter_application_id:
+  android: 
+    id: "com.example.Rp_organic"
+    name: "Rp_organic"
+  ios:
+    id: "com.example.Rp_organic"
+    name: "Rp_organic"
+
+
 # The following section is specific to Flutter.
 flutter: