feat: OTA Updates Added.

android/app/src/main/AndroidManifest.xml

@@ -6,6 +6,8 @@
          additional functionality it is fine to subclass or reimplement
          FlutterApplication and put your custom class here. -->
     <uses-permission android:name="android.permission.INTERNET"></uses-permission>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
     <application
         android:name="io.flutter.app.FlutterApplication"
         android:label="COVID19 Status"
@@ -27,5 +29,16 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+
+        <provider
+            android:name="sk.fourq.otaupdate.OtaUpdateFileProvider"
+            android:authorities="${applicationId}.ota_update_provider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/filepaths" />
+        </provider>
+
     </application>
 </manifest>

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <external-path name="external_download" path="Download"/>
+</paths>

lib/components/nav_drawer.dart

@@ -8,6 +8,7 @@ class NavDrawer extends StatelessWidget {
     ['Graphs', "/graphs"],
     ['Helpful Links', "/help"],
     ['About', '/about'],
+    ['Settings', '/settings']
   ];
 
   @override

lib/components/settings_list.dart

@@ -0,0 +1,42 @@
+import 'package:coronavirusstatus/helpers/permissions.dart';
+import 'package:coronavirusstatus/helpers/updater.dart';
+import 'package:coronavirusstatus/providers/settings_data.dart';
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+class SettingsList extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Consumer<SettingsData>(
+      builder: (context, model, _) => ListView(
+        children: <Widget>[
+          UpdateItem(
+            version: model.version,
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class UpdateItem extends StatelessWidget {
+  final String version;
+
+  const UpdateItem({
+    Key key,
+    this.version,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return ListTile(
+      title: Text('Check For Updates'),
+      subtitle: Text(this.version),
+      onTap: () {
+        Permissions.requestPermission();
+        Updater().start(context);
+      },
+      trailing: Icon(Icons.refresh),
+    );
+  }
+}

lib/helpers/permissions.dart

@@ -0,0 +1,13 @@
+import 'package:permission_handler/permission_handler.dart';
+
+class Permissions {
+  static void requestPermission() async {
+    if (!await Permission.storage.isPermanentlyDenied) {
+      await Permission.storage.request();
+    }
+  }
+
+  static Future<bool> storagePermission() async {
+    return Permission.storage.isGranted;
+  }
+}

lib/helpers/updater.dart

@@ -0,0 +1,99 @@
+import 'dart:convert';
+
+import 'package:coronavirusstatus/helpers/permissions.dart';
+import 'package:http/http.dart' as http;
+import 'package:ota_update/ota_update.dart';
+import 'package:package_info/package_info.dart';
+import 'package:device_info/device_info.dart';
+import 'dart:io' show Platform;
+import 'package:flutter/material.dart';
+
+class Updater {
+  void start(BuildContext context) async {
+    if (await Permissions.storagePermission()) {
+      if (Platform.isAndroid) {
+        var dat = await _fetchData();
+        if (await _check(dat.version)) {
+          var platform = await _platform();
+          if (platform != "") {
+            Scaffold.of(context).showSnackBar(SnackBar(
+              content: Text('New Version Available'),
+              action: SnackBarAction(
+                label: 'Update',
+                onPressed: () {
+                  _update(dat.apks[platform]);
+                },
+              ),
+            ));
+          }
+        } else {
+          Scaffold.of(context).showSnackBar(SnackBar(
+            content: Text('Alread On Newset Version'),
+          ));
+        }
+      }
+    } else {
+      Scaffold.of(context).showSnackBar(SnackBar(
+        content: Text('Could not get storage permissions'),
+      ));
+    }
+  }
+
+  Future<bool> _check(String version) async {
+    PackageInfo packageInfo = await PackageInfo.fromPlatform();
+    return (packageInfo.version.compareTo(version) == -1);
+  }
+
+  Future<Data> _fetchData() async {
+    Map<String, String> ans = Map();
+    var res = await http.get(
+        "https://api.github.com/repos/Ayush1325/Coronavirus-Status/releases/latest");
+    Map<String, dynamic> body = jsonDecode(res.body);
+
+    String version = body["tag_name"];
+    version = version.substring(1);
+    List<dynamic> assets = body['assets'];
+    Map<String, String> apks = Map.fromEntries(assets.map((e) {
+      Map<String, dynamic> item = e;
+      return MapEntry(
+          item['name'].toString(), item['browser_download_url'].toString());
+    }));
+    return Data(version, apks);
+  }
+
+  Future<String> _platform() async {
+    Map<String, String> abis = {
+      'x86': 'app-x86_64-release.apk',
+      'arm64-v8a': 'app-arm64-v8a-release.apk',
+      'armeabi-v7a': 'app-armeabi-v7a-release.apk',
+    };
+    DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();
+    AndroidDeviceInfo androidInfo = await deviceInfo.androidInfo;
+    var temp = androidInfo.supportedAbis;
+    for (MapEntry e in abis.entries) {
+      if (temp.contains(e.key)) {
+        return e.value;
+      }
+    }
+    return "";
+  }
+
+  void _update(String url) {
+    try {
+      OtaUpdate().execute(url, destinationFilename: 'covid19.apk').listen(
+        (OtaEvent event) {
+          print('EVENT: ${event.status} : ${event.value}');
+        },
+      );
+    } catch (e) {
+      print('Failed to make OTA update. Details: $e');
+    }
+  }
+}
+
+class Data {
+  final String version;
+  final Map<String, String> apks;
+
+  Data(this.version, this.apks);
+}

lib/main.dart

@@ -1,6 +1,7 @@
 import 'package:coronavirusstatus/pages/about.dart';
 import 'package:coronavirusstatus/pages/graphs.dart';
 import 'package:coronavirusstatus/pages/helpful_links.dart';
+import 'package:coronavirusstatus/pages/settings.dart';
 import 'package:coronavirusstatus/pages/states.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -53,6 +54,7 @@ class MyApp extends StatelessWidget {
         '/graphs': (context) => Graphs(),
         '/help': (context) => HelpfulLinks(),
         '/about': (context) => About(),
+        '/settings': (context) => Settings(),
       },
       initialRoute: '/home',
     );

lib/pages/settings.dart

@@ -0,0 +1,21 @@
+import 'package:coronavirusstatus/components/nav_drawer.dart';
+import 'package:coronavirusstatus/components/settings_list.dart';
+import 'package:coronavirusstatus/providers/settings_data.dart';
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+class Settings extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Settings'),
+      ),
+      drawer: NavDrawer(),
+      body: ChangeNotifierProvider(
+        create: (_) => SettingsData(),
+        child: SettingsList(),
+      ),
+    );
+  }
+}

lib/providers/settings_data.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/material.dart';
+import 'package:package_info/package_info.dart';
+
+class SettingsData extends ChangeNotifier {
+  String version;
+
+  SettingsData() {
+    _dummyData();
+    refresh();
+  }
+
+  void _dummyData() {
+    this.version = "";
+  }
+
+  void refresh() async {
+    this.version = await _appVersion();
+    notifyListeners();
+  }
+
+  Future<String> _appVersion() async {
+    PackageInfo packageInfo = await PackageInfo.fromPlatform();
+    return packageInfo.version;
+  }
+}

pubspec.lock

@@ -78,6 +78,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.1.3"
+  device_info:
+    dependency: "direct main"
+    description:
+      name: device_info
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.2+1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -156,6 +163,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.0.4"
+  ota_update:
+    dependency: "direct main"
+    description:
+      name: ota_update
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.1"
+  package_info:
+    dependency: "direct main"
+    description:
+      name: package_info
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.0+16"
   path:
     dependency: transitive
     description:
@@ -170,6 +191,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.9.0"
+  permission_handler:
+    dependency: "direct main"
+    description:
+      name: permission_handler
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.0.0+hotfix.3"
+  permission_handler_platform_interface:
+    dependency: transitive
+    description:
+      name: permission_handler_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
   petitparser:
     dependency: transitive
     description:
@@ -302,5 +337,5 @@ packages:
     source: hosted
     version: "2.2.0"
 sdks:
-  dart: ">=2.5.0 <3.0.0"
-  flutter: ">=1.12.8 <2.0.0"
+  dart: ">=2.7.0 <3.0.0"
+  flutter: ">=1.12.13+hotfix.5 <2.0.0"

pubspec.yaml

@@ -1,6 +1,6 @@
 name: coronavirusstatus
 description: A new Flutter application.
-version: 1.2.2+6
+version: 1.2.3+7
 
 environment:
   sdk: ">=2.3.0 <3.0.0"
@@ -14,6 +14,10 @@ dependencies:
   intl: ^0.16.1
   charts_flutter: ^0.9.0
   url_launcher: ^5.4.2
+  ota_update: ^2.2.1
+  package_info: '>=0.4.0 <2.0.0'
+  device_info: ^0.4.2+1
+  permission_handler: ^5.0.0
 
 dev_dependencies:
   flutter_test: