[Android] Add Platform Specific features for setting TabbedPage swipe paging and OffscreenPageLimit (#409)

* [Android] Add Platform Specific feature for setting TabbedPage swipe paging

* [Android] Add Platform Specific feature for OffscreenPageLimit

* Update docs

1 files changed, 131 insertions, 0 deletions

diff --git a/docs/Xamarin.Forms.Core/index.xml b/docs/Xamarin.Forms.Core/index.xml
index e9e56893..a6a9e004 100644
--- a/docs/Xamarin.Forms.Core/index.xml
+++ b/docs/Xamarin.Forms.Core/index.xml
@@ -462,6 +462,7 @@
     </Namespace>
     <Namespace Name="Xamarin.Forms.PlatformConfiguration.AndroidSpecific">
       <Type Name="Application" Kind="Class" />
+      <Type Name="TabbedPage" Kind="Class" />
       <Type Name="WindowSoftInputModeAdjust" Kind="Enumeration" />
     </Namespace>
     <Namespace Name="Xamarin.Forms.PlatformConfiguration.AndroidSpecific.AppCompat">
@@ -1230,6 +1231,136 @@
       <Targets>
         <Target Type="T:Xamarin.Forms.IPlatformElementConfiguration`2" />
       </Targets>
+      <Member MemberName="DisableSwipePaging">
+        <MemberSignature Language="C#" Value="public static Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; DisableSwipePaging (this Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; config);" />
+        <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; DisableSwipePaging(class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; config) cil managed" />
+        <MemberType>ExtensionMethod</MemberType>
+        <ReturnValue>
+          <ReturnType>Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;</ReturnType>
+        </ReturnValue>
+        <Parameters>
+          <Parameter Name="config" Type="Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;" RefType="this" />
+        </Parameters>
+        <Docs>
+          <param name="config">To be added.</param>
+          <summary>To be added.</summary>
+        </Docs>
+        <Link Type="Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage" Member="M:Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage.DisableSwipePaging(Xamarin.Forms.IPlatformElementConfiguration{Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage})" />
+      </Member>
+    </ExtensionMethod>
+    <ExtensionMethod>
+      <Targets>
+        <Target Type="T:Xamarin.Forms.IPlatformElementConfiguration`2" />
+      </Targets>
+      <Member MemberName="EnableSwipePaging">
+        <MemberSignature Language="C#" Value="public static Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; EnableSwipePaging (this Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; config);" />
+        <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; EnableSwipePaging(class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; config) cil managed" />
+        <MemberType>ExtensionMethod</MemberType>
+        <ReturnValue>
+          <ReturnType>Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;</ReturnType>
+        </ReturnValue>
+        <Parameters>
+          <Parameter Name="config" Type="Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;" RefType="this" />
+        </Parameters>
+        <Docs>
+          <param name="config">To be added.</param>
+          <summary>To be added.</summary>
+        </Docs>
+        <Link Type="Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage" Member="M:Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage.EnableSwipePaging(Xamarin.Forms.IPlatformElementConfiguration{Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage})" />
+      </Member>
+    </ExtensionMethod>
+    <ExtensionMethod>
+      <Targets>
+        <Target Type="T:Xamarin.Forms.IPlatformElementConfiguration`2" />
+      </Targets>
+      <Member MemberName="IsSwipePagingEnabled">
+        <MemberSignature Language="C#" Value="public static bool IsSwipePagingEnabled (this Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; config);" />
+        <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool IsSwipePagingEnabled(class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; config) cil managed" />
+        <MemberType>ExtensionMethod</MemberType>
+        <ReturnValue>
+          <ReturnType>System.Boolean</ReturnType>
+        </ReturnValue>
+        <Parameters>
+          <Parameter Name="config" Type="Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;" RefType="this" />
+        </Parameters>
+        <Docs>
+          <param name="config">To be added.</param>
+          <summary>To be added.</summary>
+        </Docs>
+        <Link Type="Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage" Member="M:Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage.IsSwipePagingEnabled(Xamarin.Forms.IPlatformElementConfiguration{Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage})" />
+      </Member>
+    </ExtensionMethod>
+    <ExtensionMethod>
+      <Targets>
+        <Target Type="T:Xamarin.Forms.IPlatformElementConfiguration`2" />
+      </Targets>
+      <Member MemberName="OffscreenPageLimit">
+        <MemberSignature Language="C#" Value="public static int OffscreenPageLimit (this Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; config);" />
+        <MemberSignature Language="ILAsm" Value=".method public static hidebysig int32 OffscreenPageLimit(class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; config) cil managed" />
+        <MemberType>ExtensionMethod</MemberType>
+        <ReturnValue>
+          <ReturnType>System.Int32</ReturnType>
+        </ReturnValue>
+        <Parameters>
+          <Parameter Name="config" Type="Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;" RefType="this" />
+        </Parameters>
+        <Docs>
+          <param name="config">To be added.</param>
+          <summary>To be added.</summary>
+        </Docs>
+        <Link Type="Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage" Member="M:Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage.OffscreenPageLimit(Xamarin.Forms.IPlatformElementConfiguration{Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage})" />
+      </Member>
+    </ExtensionMethod>
+    <ExtensionMethod>
+      <Targets>
+        <Target Type="T:Xamarin.Forms.IPlatformElementConfiguration`2" />
+      </Targets>
+      <Member MemberName="SetIsSwipePagingEnabled">
+        <MemberSignature Language="C#" Value="public static Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; SetIsSwipePagingEnabled (this Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; config, bool value);" />
+        <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; SetIsSwipePagingEnabled(class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; config, bool value) cil managed" />
+        <MemberType>ExtensionMethod</MemberType>
+        <ReturnValue>
+          <ReturnType>Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;</ReturnType>
+        </ReturnValue>
+        <Parameters>
+          <Parameter Name="config" Type="Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;" RefType="this" />
+          <Parameter Name="value" Type="System.Boolean" />
+        </Parameters>
+        <Docs>
+          <param name="config">To be added.</param>
+          <param name="value">To be added.</param>
+          <summary>To be added.</summary>
+        </Docs>
+        <Link Type="Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage" Member="M:Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage.SetIsSwipePagingEnabled(Xamarin.Forms.IPlatformElementConfiguration{Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage},System.Boolean)" />
+      </Member>
+    </ExtensionMethod>
+    <ExtensionMethod>
+      <Targets>
+        <Target Type="T:Xamarin.Forms.IPlatformElementConfiguration`2" />
+      </Targets>
+      <Member MemberName="SetOffscreenPageLimitProperty">
+        <MemberSignature Language="C#" Value="public static Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; SetOffscreenPageLimitProperty (this Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt; config, int value);" />
+        <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; SetOffscreenPageLimitProperty(class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.Android, class Xamarin.Forms.TabbedPage&gt; config, int32 value) cil managed" />
+        <MemberType>ExtensionMethod</MemberType>
+        <ReturnValue>
+          <ReturnType>Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;</ReturnType>
+        </ReturnValue>
+        <Parameters>
+          <Parameter Name="config" Type="Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage&gt;" RefType="this" />
+          <Parameter Name="value" Type="System.Int32" />
+        </Parameters>
+        <Docs>
+          <param name="config">To be added.</param>
+          <param name="value">To be added.</param>
+          <summary>To be added.</summary>
+        </Docs>
+        <Link Type="Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage" Member="M:Xamarin.Forms.PlatformConfiguration.AndroidSpecific.TabbedPage.SetOffscreenPageLimitProperty(Xamarin.Forms.IPlatformElementConfiguration{Xamarin.Forms.PlatformConfiguration.Android,Xamarin.Forms.TabbedPage},System.Int32)" />
+      </Member>
+    </ExtensionMethod>
+    <ExtensionMethod>
+      <Targets>
+        <Target Type="T:Xamarin.Forms.IPlatformElementConfiguration`2" />
+      </Targets>
       <Member MemberName="DisableTranslucentNavigationBar">
         <MemberSignature Language="C#" Value="public static Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.iOS,Xamarin.Forms.NavigationPage&gt; DisableTranslucentNavigationBar (this Xamarin.Forms.IPlatformElementConfiguration&lt;Xamarin.Forms.PlatformConfiguration.iOS,Xamarin.Forms.NavigationPage&gt; config);" />
         <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.iOS, class Xamarin.Forms.NavigationPage&gt; DisableTranslucentNavigationBar(class Xamarin.Forms.IPlatformElementConfiguration`2&lt;class Xamarin.Forms.PlatformConfiguration.iOS, class Xamarin.Forms.NavigationPage&gt; config) cil managed" />