diff --git a/example/.flutter-plugins-dependencies b/example/.flutter-plugins-dependencies
new file mode 100644
index 0000000..238fd7f
--- /dev/null
+++ b/example/.flutter-plugins-dependencies
@@ -0,0 +1 @@
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"path_provider","path":"/Users/vitaliishcherbyna/.pub-cache/hosted/pub.dartlang.org/path_provider-1.1.2/","dependencies":[]},{"name":"sqflite","path":"/Users/vitaliishcherbyna/.pub-cache/hosted/pub.dartlang.org/sqflite-1.1.3/","dependencies":[]},{"name":"flutter_plugin_pdf_viewer","path":"/Users/vitaliishcherbyna/KanapkaMan/flutter_plugin_pdf_viewer/","dependencies":["path_provider"]}],"android":[{"name":"path_provider","path":"/Users/vitaliishcherbyna/.pub-cache/hosted/pub.dartlang.org/path_provider-1.1.2/","dependencies":[]},{"name":"sqflite","path":"/Users/vitaliishcherbyna/.pub-cache/hosted/pub.dartlang.org/sqflite-1.1.3/","dependencies":[]},{"name":"flutter_plugin_pdf_viewer","path":"/Users/vitaliishcherbyna/KanapkaMan/flutter_plugin_pdf_viewer/","dependencies":["path_provider"]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"path_provider","dependencies":[]},{"name":"sqflite","dependencies":[]},{"name":"flutter_plugin_pdf_viewer","dependencies":["path_provider"]}],"date_created":"2020-12-13 12:40:07.851434","version":"1.22.0"}
\ No newline at end of file
diff --git a/example/ios/Flutter/flutter_export_environment.sh b/example/ios/Flutter/flutter_export_environment.sh
new file mode 100755
index 0000000..d7864dc
--- /dev/null
+++ b/example/ios/Flutter/flutter_export_environment.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+# This is a generated file; do not edit or check into version control.
+export "FLUTTER_ROOT=/Users/vitaliishcherbyna/flutter"
+export "FLUTTER_APPLICATION_PATH=/Users/vitaliishcherbyna/KanapkaMan/flutter_plugin_pdf_viewer/example"
+export "FLUTTER_TARGET=lib/main.dart"
+export "FLUTTER_BUILD_DIR=build"
+export "SYMROOT=${SOURCE_ROOT}/../build/ios"
+export "OTHER_LDFLAGS=$(inherited) -framework Flutter"
+export "FLUTTER_FRAMEWORK_DIR=/Users/vitaliishcherbyna/flutter/bin/cache/artifacts/engine/ios"
+export "FLUTTER_BUILD_NAME=1.0.0"
+export "FLUTTER_BUILD_NUMBER=1"
+export "DART_OBFUSCATION=false"
+export "TRACK_WIDGET_CREATION=false"
+export "TREE_SHAKE_ICONS=false"
+export "PACKAGE_CONFIG=.packages"
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 13d20a0..9a9e524 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -7,28 +7,42 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.0"
+    version: "2.5.0-nullsafety.1"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "2.1.0-nullsafety.1"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0-nullsafety.3"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.2"
+    version: "1.2.0-nullsafety.1"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0-nullsafety.1"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.11"
+    version: "1.15.0-nullsafety.3"
   convert:
     dependency: transitive
     description:
@@ -50,6 +64,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.1.2"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0-nullsafety.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -115,14 +136,14 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.5"
+    version: "0.12.10-nullsafety.1"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.3.0-nullsafety.3"
   numberpicker:
     dependency: transitive
     description:
@@ -136,7 +157,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.2"
+    version: "1.8.0-nullsafety.1"
   path_drawing:
     dependency: transitive
     description:
@@ -158,13 +179,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.2"
-  pedantic:
-    dependency: transitive
-    description:
-      name: pedantic
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.7.0"
   petitparser:
     dependency: transitive
     description:
@@ -172,20 +186,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.1"
-  quiver:
-    dependency: transitive
-    description:
-      name: quiver
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.3"
   rxdart:
     dependency: transitive
     description:
       name: rxdart
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.21.0"
+    version: "0.24.1"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -197,7 +204,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.8.0-nullsafety.2"
   sqflite:
     dependency: transitive
     description:
@@ -211,21 +218,21 @@ packages:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.3"
+    version: "1.10.0-nullsafety.1"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0-nullsafety.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.1.0-nullsafety.1"
   synchronized:
     dependency: transitive
     description:
@@ -239,21 +246,21 @@ packages:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0-nullsafety.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.5"
+    version: "0.2.19-nullsafety.2"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.3.0-nullsafety.3"
   uuid:
     dependency: transitive
     description:
@@ -267,7 +274,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0-nullsafety.3"
   xml:
     dependency: transitive
     description:
@@ -276,5 +283,5 @@ packages:
     source: hosted
     version: "3.3.1"
 sdks:
-  dart: ">=2.2.2 <3.0.0"
+  dart: ">=2.10.0-110 <2.11.0"
   flutter: ">=1.6.0 <2.0.0"
diff --git a/lib/src/document.dart b/lib/src/document.dart
index 4844297..62df6c0 100644
--- a/lib/src/document.dart
+++ b/lib/src/document.dart
@@ -5,7 +5,6 @@ import 'package:flutter/services.dart';
 import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:flutter_plugin_pdf_viewer/src/page.dart';
 import 'package:path_provider/path_provider.dart';
-import 'package:rxdart/rxdart.dart';
 
 class PDFDocument {
   static const MethodChannel _channel =
@@ -86,7 +85,7 @@ class PDFDocument {
   }
 
   // Stream all pages
-  Observable<PDFPage> getAll() {
+  Stream<PDFPage> getAll() {
     return Future.forEach<PDFPage>(List(count), (i) async {
       print(i);
       final data = await _channel
diff --git a/pubspec.lock b/pubspec.lock
index 3a13e9c..2038338 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -8,6 +8,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.2.0"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0-nullsafety.3"
   charcode:
     dependency: transitive
     description:
@@ -21,7 +28,7 @@ packages:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.11"
+    version: "1.15.0-nullsafety.3"
   convert:
     dependency: transitive
     description:
@@ -89,7 +96,7 @@ packages:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.3.0-nullsafety.3"
   numberpicker:
     dependency: "direct main"
     description:
@@ -145,7 +152,7 @@ packages:
       name: rxdart
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.21.0"
+    version: "0.24.1"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -192,7 +199,7 @@ packages:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.3.0-nullsafety.3"
   uuid:
     dependency: transitive
     description:
@@ -206,7 +213,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0-nullsafety.3"
   xml:
     dependency: transitive
     description:
@@ -215,5 +222,5 @@ packages:
     source: hosted
     version: "3.5.0"
 sdks:
-  dart: ">=2.4.0 <3.0.0"
+  dart: ">=2.10.0-110 <2.11.0"
   flutter: ">=1.6.0 <2.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 3b97efd..5df6000 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -12,11 +12,11 @@ dependencies:
     sdk: flutter
   flutter_cache_manager: ^1.0.0
   path_provider: ^1.1.0
-  rxdart: ^0.21.0
+  rxdart: ^0.24.1
   numberpicker: ^1.0.0
   flutter_advanced_networkimage: ^0.5.0
 
 flutter:
   plugin:
     androidPackage: pt.tribeiro.flutter_plugin_pdf_viewer
-    pluginClass: FlutterPluginPdfViewerPlugin
\ No newline at end of file
+    pluginClass: FlutterPluginPdfViewerPlugin