Android: add barebones binding solution

Adding a barebones android binding solution that should
be used in conjunction with OneSignal-Android-SDK to enable
Xamarin.Android support.

OneSignal.Android.Binding/OneSignal.Android.Binding.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OneSignal.Android.Binding", "OneSignal.Android.Binding\OneSignal.Android.Binding.csproj", "{9144F592-91B9-4ACA-BC3C-D771F8319996}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{9144F592-91B9-4ACA-BC3C-D771F8319996}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9144F592-91B9-4ACA-BC3C-D771F8319996}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9144F592-91B9-4ACA-BC3C-D771F8319996}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9144F592-91B9-4ACA-BC3C-D771F8319996}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

OneSignal.Android.Binding/OneSignal.Android.Binding.userprefs

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+<Properties StartupItem="OneSignal.Android.Binding/OneSignal.Android.Binding.csproj">
+  <MonoDevelop.Ide.Workspace ActiveConfiguration="Debug" PreferredExecutionTarget="Android.Xamarin_Android_API_15" />
+  <MonoDevelop.Ide.Workbench>
+    <Pads>
+      <Pad Id="ProjectPad">
+        <State name="__root__">
+          <Node name="OneSignal.Android.Binding" expanded="True" />
+        </State>
+      </Pad>
+    </Pads>
+  </MonoDevelop.Ide.Workbench>
+  <MonoDevelop.Ide.DebuggingService.Breakpoints>
+    <BreakpointStore />
+  </MonoDevelop.Ide.DebuggingService.Breakpoints>
+  <MonoDevelop.Ide.DebuggingService.PinnedWatches />
+</Properties>

OneSignal.Android.Binding/OneSignal.Android.Binding/Additions/AboutAdditions.txt

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+Additions allow you to add arbitrary C# to the generated classes
+before they are compiled.  This can be helpful for providing convenience
+methods or adding pure C# classes.
+
+== Adding Methods to Generated Classes ==
+
+Let's say the library being bound has a Rectangle class with a constructor
+that takes an x and y position, and a width and length size.  It will look like
+this:
+
+public partial class Rectangle
+{
+    public Rectangle (int x, int y, int width, int height)
+	{
+	    // JNI bindings
+	}
+}
+
+Imagine we want to add a constructor to this class that takes a Point and
+Size structure instead of 4 ints.  We can add a new file called Rectangle.cs
+with a partial class containing our new method:
+
+public partial class Rectangle
+{
+    public Rectangle (Point location, Size size) :
+	    this (location.X, location.Y, size.Width, size.Height)
+	{
+	}
+}
+
+At compile time, the additions class will be added to the generated class
+and the final assembly will a Rectangle class with both constructors.
+
+
+== Adding C# Classes ==
+
+Another thing that can be done is adding fully C# managed classes to the
+generated library.  In the above example, let's assume that there isn't a
+Point class available in Java or our library.  The one we create doesn't need
+to interact with Java, so we'll create it like a normal class in C#.
+
+By adding a Point.cs file with this class, it will end up in the binding library:
+
+public class Point
+{
+    public int X { get; set; }
+	public int Y { get; set; }
+}

OneSignal.Android.Binding/OneSignal.Android.Binding/Jars/AboutJars.txt

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+This directory is for Android .jars.
+
+There are 4 types of jars that are supported:
+
+== Input Jar and Embedded Jar ==
+
+This is the jar that bindings should be generated for.
+
+For example, if you were binding the Google Maps library, this would
+be Google's "maps.jar".
+
+The difference between EmbeddedJar and InputJar is, EmbeddedJar is to be
+embedded in the resulting dll as EmbeddedResource, while InputJar is not.
+There are couple of reasons you wouldn't like to embed the target jar
+in your dll (the ones that could be internally loaded by <uses-library>
+feature e.g. maps.jar, or you cannot embed jars that are under some
+proprietary license).
+
+Set the build action for these jars in the properties page to "InputJar".
+
+
+== Reference Jar and Embedded Reference Jar ==
+
+These are jars that are referenced by the input jar.  C# bindings will
+not be created for these jars.  These jars will be used to resolve
+types used by the input jar.
+
+NOTE: Do not add "android.jar" as a reference jar.  It will be added automatically
+based on the Target Framework selected.
+
+Set the build action for these jars in the properties page to "ReferenceJar".
+
+"EmbeddedJar" works like "ReferenceJar", but like "EmbeddedJar", it is
+embedded in your dll. But at application build time, they are not included
+in the final apk, like ReferenceJar files.
+
+

OneSignal.Android.Binding/OneSignal.Android.Binding/OneSignal.Android.Binding.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectTypeGuids>{EFBA0AD7-5A72-4C68-AF49-83D382785DCF};{10368E6C-D01B-4462-8E8B-01FC667A7035};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ProjectGuid>{9144F592-91B9-4ACA-BC3C-D771F8319996}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <RootNamespace>OneSignal.Android.Binding</RootNamespace>
+    <MonoAndroidResourcePrefix>Resources</MonoAndroidResourcePrefix>
+    <MonoAndroidAssetsPrefix>Assets</MonoAndroidAssetsPrefix>
+    <AndroidUseLatestPlatformSdk>True</AndroidUseLatestPlatformSdk>
+    <AssemblyName>OneSignal.Android.Binding</AssemblyName>
+    <TargetFrameworkVersion>v6.0</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <AndroidLinkMode>None</AndroidLinkMode>
+    <ConsolePause>false</ConsolePause>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>full</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <AndroidUseSharedRuntime>false</AndroidUseSharedRuntime>
+    <ConsolePause>false</ConsolePause>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="Mono.Android" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Additions\AboutAdditions.txt" />
+    <None Include="Jars\AboutJars.txt" />
+  </ItemGroup>
+  <ItemGroup>
+    <TransformFile Include="Transforms\EnumFields.xml" />
+    <TransformFile Include="Transforms\EnumMethods.xml" />
+    <TransformFile Include="Transforms\Metadata.xml" />
+  </ItemGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.Bindings.targets" />
+</Project>

OneSignal.Android.Binding/OneSignal.Android.Binding/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using Android.App;
+
+// Information about this assembly is defined by the following attributes.
+// Change them to the values specific to your project.
+
+[assembly: AssemblyTitle ("OneSignal.Android.Binding")]
+[assembly: AssemblyDescription ("")]
+[assembly: AssemblyConfiguration ("")]
+[assembly: AssemblyCompany ("")]
+[assembly: AssemblyProduct ("")]
+[assembly: AssemblyCopyright ("vivek")]
+[assembly: AssemblyTrademark ("")]
+[assembly: AssemblyCulture ("")]
+
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+
+[assembly: AssemblyVersion ("1.0.0")]
+
+// The following attributes are used to specify the signing key for the assembly,
+// if desired. See the Mono documentation for more information about signing.
+
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]
+

OneSignal.Android.Binding/OneSignal.Android.Binding/Transforms/EnumFields.xml

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+<enum-field-mappings>
+	<!--
+  This example converts the constants Fragment_id, Fragment_name,
+  and Fragment_tag from android.support.v4.app.FragmentActivity.FragmentTag
+  to an enum called Android.Support.V4.App.FragmentTagType with values
+  Id, Name, and Tag.
+  
+  <mapping clr-enum-type="Android.Support.V4.App.FragmentTagType" jni-class="android/support/v4/app/FragmentActivity$FragmentTag">
+    <field clr-name="Id" jni-name="Fragment_id" value="1" />
+    <field clr-name="Name" jni-name="Fragment_name" value="0" />
+    <field clr-name="Tag" jni-name="Fragment_tag" value="2" />
+  </type>
+
+  Notes:
+  - An optional "bitfield" attribute marks the enum type with [Flags].
+  - For Java interfaces, use "jni-interface" attribute instead of "jni-class" attribute.
+  -->
+</enum-field-mappings>

OneSignal.Android.Binding/OneSignal.Android.Binding/Transforms/EnumMethods.xml

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+<enum-method-mappings>
+	<!--
+  This example changes the Java method:
+    android.support.v4.app.Fragment.SavedState.writeToParcel (int flags)
+  to be:
+    android.support.v4.app.Fragment.SavedState.writeToParcel (Android.OS.ParcelableWriteFlags flags)
+  when bound in C#.
+
+  <mapping jni-class="android/support/v4/app/Fragment.SavedState">
+    <method jni-name="writeToParcel" parameter="flags" clr-enum-type="Android.OS.ParcelableWriteFlags" />
+  </mapping>
+
+  Notes:
+  - For Java interfaces, use "jni-interface" attribute instead of "jni-class" attribute.
+  - To change the type of the return value, use "return" as the parameter name.
+  - The parameter names will be p0, p1, ... unless you provide JavaDoc file in the project.
+  -->
+</enum-method-mappings>

OneSignal.Android.Binding/OneSignal.Android.Binding/Transforms/Metadata.xml

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+<metadata>
+	<!--
+  This sample removes the class: android.support.v4.content.AsyncTaskLoader.LoadTask:
+  <remove-node path="/api/package[@name='android.support.v4.content']/class[@name='AsyncTaskLoader.LoadTask']" />
+  
+  This sample removes the method: android.support.v4.content.CursorLoader.loadInBackground:
+  <remove-node path="/api/package[@name='android.support.v4.content']/class[@name='CursorLoader']/method[@name='loadInBackground']" />
+  -->
+</metadata>