Can I retrive Lat,Long from Webview of Google Maps Centre Home Example?

<?xml version="1.0" encoding="UTF-8"?>
<customMapSource>
   <name>BarryTiles</name>
   <minZoom>17</minZoom>
   <maxZoom>17</maxZoom>
   <tileType>png</tileType>
   <tileUpdate>None</tileUpdate>
   <url>http://localhost/android.martinpearman.co.uk/b4a/barry_tiles/gm_{$x}_{$y}_{$z}.png</url>
   <backgroundColor>#000000</backgroundColor>
</customMapSource>

Sub Process_Globals
   Dim MapCenter As GeoPoint
   Dim TileSource As String
   Dim ZoomLevel As Int
End Sub

Sub Globals
   Dim MapView1 As MapView
      Dim NewTileSourceName As String
   Dim TileSourceSpinner As Spinner
End Sub

Sub Activity_Create(FirstTime As Boolean)
   MapView1.Initialize("")
   
   If FirstTime Then
      MapCenter.Initialize(-37.85, 145.06)
      ZoomLevel=17
      
      Dim OfflineTileCacheFilename, TileCacheDir As String
      OfflineTileCacheFilename="barry_offline_tile_cache.zip"
      TileCacheDir=File.DirRootExternal&"/osmdroid"
      '   check if the offline tile cache has already been copied to the OSMDroid cache folder
      If File.Exists(TileCacheDir, OfflineTileCacheFilename)=False Then
         '   create the 'osmdroid' cache folder if it does not exist
         If File.Exists(TileCacheDir&"/", "")=False Then
            File.MakeDir(File.DirRootExternal, "osmdroid")
         End If
         '   copy the offline tile cache to the OSMDroid cache folder
         File.Copy(File.DirAssets, OfflineTileCacheFilename, TileCacheDir, OfflineTileCacheFilename)
      End If
      
      NewTileSourceName="BarryTiles"
      
      Dim CurrentTilesSources As List
      CurrentTilesSources=MapView1.GetTileSources
      If CurrentTilesSources.IndexOf(NewTileSourceName)=-1 Then
      '   the NewTileSourceName has not yet been added to the MapView
         Dim MyXYTileSource As XYTileSource
         
         MyXYTileSource.initialize(NewTileSourceName, 17, 17, 256, ".png", "http://localhost/")
         MapView1.AddXYTileSource(MyXYTileSource)
         
         '   note that after Activity_Pause (orientation change for example) the added XYTileSource will still exist in the MapView
         '   the added XYTileSorce will exist until the activity process is destroyed
         '   trying to add an XYTileSource more than once will not cause problems however - the AddXYTileSource method ensures that the tile source is only added once
      End If
      
      '   set the default initial TileSource
      TileSource=NewTileSourceName
   End If
   
   TileSourceSpinner.Initialize("TileSourceSelect")
   Activity.AddView(TileSourceSpinner, 0, 0, 100%x, 48dip)
   
   TileSourceSpinner.AddAll(MapView1.GetTileSources)
   TileSourceSpinner.Prompt="Select a TileSource"
   TileSourceSpinner.SelectedIndex=TileSourceSpinner.IndexOf(TileSource)
   '   manually call the Spinner ItemClick Sub to sync the MapView TileSource with the spinner SelectedIndex
   TileSourceSelect_ItemClick(TileSourceSpinner.SelectedIndex, TileSourceSpinner.SelectedItem)
   
   MapView1.SetMultiTouchEnabled(True)
   MapView1.SetZoomEnabled(True)
   MapView1.Zoom=ZoomLevel
   MapView1.SetCenter3(MapCenter)
   Activity.AddView(MapView1, 0, 48dip, 100%x, 100%y-48dip)
End Sub

Sub Activity_Resume
End Sub

Sub Activity_Pause (UserClosed As Boolean)
   MapCenter=MapView1.GetCenter
   ZoomLevel=MapView1.Zoom
   
   '   save the currently selected MapView TileSource
   TileSource=MapView1.GetTileSource
End Sub

Sub TileSourceSelect_ItemClick (Position As Int, Value As Object)

   '   when first run this seems to prevent the offline tiles from loading
   '   rotate device and they appear...
   '   might be best to not bother disabling the data connection
   If Value=NewTileSourceName Then
      MapView1.SetDataConnectionEnabled(False)
   Else
      MapView1.SetDataConnectionEnabled(True)
   End If

   '   set the MapView TileSource
   MapView1.SetTileSource(Value)
End Sub

<?xml version="1.0" encoding="UTF-8"?>
<customMapSource>
    <name>BGSTiles</name>
    <minZoom>18</minZoom>
    <maxZoom>18</maxZoom>
    <tileType>png</tileType>
    <tileUpdate>None</tileUpdate>
    <url>file:///M:/Inetpub/wwwroot/BGSTiles18/gm_{$x}_{$y}_{$z}.png</url>
    <backgroundColor>#000000</backgroundColor>
</customMapSource>

MyXYTileSource.initialize(NewTileSourceName, 17, 18, 256, ".png", "http://localhost/")