stub out autofill framework service

src/Android/Android.csproj

@@ -17,7 +17,7 @@
     <GenerateSerializationAssemblies>Off</GenerateSerializationAssemblies>
     <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest>
     <AndroidUseLatestPlatformSdk>false</AndroidUseLatestPlatformSdk>
-    <TargetFrameworkVersion>v7.1</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v8.0</TargetFrameworkVersion>
     <AndroidSupportedAbis>armeabi,armeabi-v7a,x86</AndroidSupportedAbis>
     <AndroidHttpClientHandlerType>Xamarin.Android.Net.AndroidClientHandler</AndroidHttpClientHandlerType>
     <AndroidStoreUncompressedFileExtensions />
@@ -287,6 +287,7 @@
   <ItemGroup>
     <Compile Include="AutofillActivity.cs" />
     <Compile Include="AutofillCredentials.cs" />
+    <Compile Include="AutofillFrameworkService.cs" />
     <Compile Include="Controls\CustomLabelRenderer.cs" />
     <Compile Include="Controls\CustomSearchBarRenderer.cs" />
     <Compile Include="Controls\CustomButtonRenderer.cs" />
@@ -1062,6 +1063,9 @@
   <ItemGroup>
     <AndroidResource Include="Resources\drawable\apple.png" />
   </ItemGroup>
+  <ItemGroup>
+    <AndroidResource Include="Resources\xml\autofillservice.xml" />
+  </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
   <Import Project="..\..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\build\Xamarin.Android.Support.Vector.Drawable.targets" Condition="Exists('..\..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\build\Xamarin.Android.Support.Vector.Drawable.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">

src/Android/AutofillFrameworkService.cs

@@ -0,0 +1,30 @@
+using Android;
+using Android.App;
+using Android.OS;
+using Android.Runtime;
+using Android.Service.Autofill;
+using Android.Util;
+
+namespace Bit.Android
+{
+    [Service(Permission = Manifest.Permission.BindAutofillService, Label = "bitwarden")]
+    [IntentFilter(new string[] { "android.service.autofill.AutofillService" })]
+    [MetaData("android.autofill", Resource = "@xml/autofillservice")]
+    [Register("com.x8bit.bitwarden.AutofillFrameworkService")]
+    public class AutofillFrameworkService : global::Android.Service.Autofill.AutofillService
+    {
+        public override void OnFillRequest(FillRequest request, CancellationSignal cancellationSignal, FillCallback callback)
+        {
+            var structure = request.FillContexts[request.FillContexts.Count - 1].Structure;
+            var data = request.ClientState;
+        }
+
+        public override void OnSaveRequest(SaveRequest request, SaveCallback callback)
+        {
+            var context = request.FillContexts;
+            var structure = context[context.Count - 1].Structure;
+            var data = request.ClientState;
+            
+        }
+    }
+}

src/Android/Properties/AndroidManifest.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.x8bit.bitwarden" android:versionName="1.12.2" android:installLocation="auto" android:versionCode="502" xmlns:tools="http://schemas.android.com/tools">
-  <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="23" />
+  <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="26" />
 
   <uses-permission android:name="android.permission.INTERNET" />
   <uses-permission android:name="android.permission.NFC" />

src/Android/Resources/Resource.Designer.cs

@@ -5397,7 +5397,10 @@ namespace Bit.Android
 			public const int accessibilityservice = 2131099648;
 			
 			// aapt resource value: 0x7f060001
-			public const int filepaths = 2131099649;
+			public const int autofillservice = 2131099649;
+			
+			// aapt resource value: 0x7f060002
+			public const int filepaths = 2131099650;
 			
 			static Xml()
 			{

src/Android/Resources/xml/autofillservice.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<autofill-service
+    xmlns:android="http://schemas.android.com/apk/res/android" />

test/Android.Test/Android.Test.csproj

@@ -16,7 +16,7 @@
     <AndroidResgenFile>Resources\Resource.Designer.cs</AndroidResgenFile>
     <GenerateSerializationAssemblies>Off</GenerateSerializationAssemblies>
     <AndroidUseLatestPlatformSdk>false</AndroidUseLatestPlatformSdk>
-    <TargetFrameworkVersion>v7.1</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v8.0</TargetFrameworkVersion>
     <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">