Dart/Android implementation

pubspec.lock

@@ -54,12 +54,19 @@ packages:
     source: hosted
     version: "1.1.7"
   path:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.6.4"
+  path_provider:
+    dependency: "direct main"
+    description:
+      name: path_provider
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.4.5"
   pedantic:
     dependency: transitive
     description:
@@ -67,6 +74,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0+1"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.1"
   quiver:
     dependency: transitive
     description:
@@ -74,6 +88,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.5"
+  rxdart:
+    dependency: "direct main"
+    description:
+      name: rxdart
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.22.6"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -137,3 +158,4 @@ packages:
     version: "2.0.8"
 sdks:
   dart: ">=2.2.2 <3.0.0"
+  flutter: ">=1.9.1+hotfix.5 <2.0.0"