diff --git a/ios/Flutter/flutter_export_environment.sh b/ios/Flutter/flutter_export_environment.sh
index 7d13130..80e4bfd 100755
--- a/ios/Flutter/flutter_export_environment.sh
+++ b/ios/Flutter/flutter_export_environment.sh
@@ -1,11 +1,10 @@
 #!/bin/sh
 # This is a generated file; do not edit or check into version control.
-export "FLUTTER_ROOT=/Users/pawankumar/flutter"
-export "FLUTTER_APPLICATION_PATH=/Users/pawankumar/Desktop/dart/mobile/flutterwhatsapp"
-export "FLUTTER_TARGET=/Users/pawankumar/Desktop/dart/mobile/flutterwhatsapp/lib/main.dart"
+export "FLUTTER_ROOT=/home/shuchita/flutter"
+export "FLUTTER_APPLICATION_PATH=/home/shuchita/WhatsApp_clone/FlutterWhatsAppClone"
+export "FLUTTER_TARGET=lib/main.dart"
 export "FLUTTER_BUILD_DIR=build"
 export "SYMROOT=${SOURCE_ROOT}/../build/ios"
-export "FLUTTER_FRAMEWORK_DIR=/Users/pawankumar/flutter/bin/cache/artifacts/engine/ios"
+export "FLUTTER_FRAMEWORK_DIR=/home/shuchita/flutter/bin/cache/artifacts/engine/ios"
 export "FLUTTER_BUILD_NAME=1.0.0"
 export "FLUTTER_BUILD_NUMBER=1"
-export "TRACK_WIDGET_CREATION=true"
diff --git a/lib/main.dart b/lib/main.dart
index 5656045..8bb4212 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -9,20 +9,28 @@ List<CameraDescription> cameras;
 Future<Null> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   cameras = await availableCameras();
-  runApp(new MyApp());
+  runApp(MyApp());
 }
 
 class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
-    return new MaterialApp(
+    return  MaterialApp(
       title: "WhatsApp",
-      theme: new ThemeData(
-        primaryColor: new Color(0xff075E54),
-        accentColor: new Color(0xff25D366),
+      theme: ThemeData(
+        brightness: Brightness.light,
+        primaryColor: Color(0xff075E54),
+        accentColor: Color(0xff25D366),
+        backgroundColor: Colors.black54,
+      ),
+      darkTheme: ThemeData(
+        brightness: Brightness.dark,
+        primaryColorDark: Colors.black,
+        primaryColor: Color(0xff004242),
+        accentColor: Color(0xff25D366),
       ),
       debugShowCheckedModeBanner: false,
-      home: new WhatsAppHome(cameras:cameras),
+      home: WhatsAppHome(cameras:cameras),
     );
   }
 }
diff --git a/pubspec.lock b/pubspec.lock
index 043d387..8a763a8 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,20 +1,6 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.10"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.5.2"
   async:
     dependency: transitive
     description:
@@ -102,13 +88,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.1.3"
-  image:
-    dependency: transitive
-    description:
-      name: image
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.4"
   matcher:
     dependency: transitive
     description:
@@ -144,13 +123,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0+1"
-  petitparser:
-    dependency: transitive
-    description:
-      name: petitparser
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.4.0"
   platform:
     dependency: transitive
     description:
@@ -261,13 +233,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.8"
-  xml:
-    dependency: transitive
-    description:
-      name: xml
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.5.0"
 sdks:
   dart: ">=2.5.0 <3.0.0"
   flutter: ">=1.9.1 <2.0.0"