Android.Views.InflateException: Binary XML file line #1

Question

Hi,

I am developing sample Google map application in Xamarin Andriod.
when I run this application it display this error.

"Android.Views.InflateException: Binary XML file line #1: Binary XML file line #1: Error inflating class fragment"

main.axml:

 <?xml version="1.0" encoding="utf-8"?>

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

 android:orientation="vertical" 

android:layout_width="fill_parent"

 android:layout_height="fill_parent"

 android:paddingTop="20dp"

 android:paddingLeft="8dp"

 android:paddingRight="8dp"> 

<fragment android:id="@+id/map"

 android:layout_width="match_parent"

 android:layout_height="match_parent"

 class="com.google.andriod.gms.maps.MapFragment" />

mainActivity.cs::

namespace GMap
{
[Activity(Label = "GMap", MainLauncher = true, Icon = "@drawable/icon")]
public class MainActivity : Activity, IOnMapReadyCallback
{
// private GoogleMap mMap;

 protected override void OnCreate(Bundle bundle)

 {

 base.OnCreate(bundle); 

// Set our view from the "main" layout resource 

SetContentView(Resource.Layout.Main); //ERROR DISPLAY IN THIS LINE 

MapFragment mapfragment = (MapFragment)FragmentManager.FindFragmentById(Resource.Id.map); 

 mapfragment.GetMapAsync(this);

 } 

public void OnMapReady(GoogleMap googleMap) 

{

 MarkerOptions markerOption = new MarkerOptions();

 markerOption.SetPosition(new LatLng(16.03, 108)); 

 markerOption.SetTitle("My Position");       

googleMap.AddMarker(markerOption); 

} 

}

how solve this error..???